Subject: backcrossing and hybrids / Text Availability: Full Text

1. Laboratory Hybridization Between the Green Lacewings Chrysoperla comanche (Neuroptera: Chrysopidae) and Chrysoperla rufilabris, Predators of the Asian Citrus Psyllid

Author:: Marco Gebiola; Richard Stouthamer
Source:: Journal of economic entomology 2020 v.112 no.4 pp. 1575-1580
ISSN:: 0022-0493
Subject:: Chrysoperla comanche; Chrysoperla rufilabris; Citrus; Diaphorina citri; Rickettsia; adenosinetriphosphatase; backcrossing; bacteria; biological control agents; courtship; entomology; genes; hybridization; hybrids; larvae; mitochondria; pests; progeny; sibling species; California
Abstract:: ... Chrysoperla comanche (Banks) and its sibling species Chrysoperla rufilabris (Burmeister) are voracious predators of the Asian citrus psyllid, Diaphorina citri Kuwayama (Hemiptera: Liviidae), an invasive pest that vectors a bacterium responsible for the lethal and incurable citrus greening disease. The Comanche lacewing naturally occurs in Southern California, whereas C. rufilabris is currently one ...
DOI:: 10.1093/jee/toz081
CHORUS:: 10.1093/jee/toz081
: https://doi.org/10.1093/jee/toz081

2. Rapid identification of homozygosity and site of wild relative introgressions in wheat through chromosome‐specific KASP genotyping assays

Author:: Surbhi Grewal; Stella Hubbart‐Edwards; Caiyun Yang; Urmila Devi; Lauren Baker; Jack Heath; Stephen Ashling; Duncan Scholefield; Caroline Howells; Jermaine Yarde; Peter Isaac; Ian P. King; Julie King
Source:: Plant biotechnology journal 2020 v.18 no.3 pp. 743-755
ISSN:: 1467-7644
Subject:: DNA; backcrossing; biotechnology; cost effectiveness; food security; genetic variation; genome; genotyping; heterozygosity; homozygosity; hybrids; introgression; marker-assisted selection; polyploidy; rapid methods; single nucleotide polymorphism; wheat; wild relatives
Abstract:: ... For future food security, it is important that wheat, one of the most widely consumed crops in the world, can survive the threat of abiotic and biotic stresses. New genetic variation is currently being introduced into wheat through introgressions from its wild relatives. For trait discovery, it is necessary that each introgression is homozygous and hence stable. Breeding programmes rely on efficie ...
DOI:: 10.1111/pbi.13241
PubMed:: 31465620
PubMed Central:: PMC7004896
: https://doi.org/10.1111/pbi.13241

3. Conservation implications of asymmetric introgression and reproductive barriers in a rare primrose species

Author:: Yongpeng Ma; Tobias Marczewski; Dan Xue; Zhikun Wu; Rongli Liao; Weibang Sun; Jane Marczewski
Source:: BMC plant biology 2019 v.19 no.1 pp. 286
ISSN:: 1471-2229
Subject:: Primula; backcrossing; flowering; fruits; herbs; heterostyly; hybrids; indigenous species; introgression; microsatellite repeats; pollen; pollination; rare species; reproductive isolation; seed set
Abstract:: ... BACKGROUND: Primula is a large genus of flowering herbs well known for their heterostyly. Currently few natural hybrids are known and reproductive barriers in this genus in the wild have received little attention. However, there is instance of hybridization between rare and widely-spread species, and conservation implications of such situation is poorly understood. In the present study, we investi ...
DOI:: 10.1186/s12870-019-1881-0
PubMed:: 31253088
PubMed Central:: PMC6599365
: https://doi.org/10.1186/s12870-019-1881-0

4. Dominance effects strengthen premating hybridization barriers between sympatric species of grasshoppers (Acrididae, Orthoptera)

Author:: Brigitte Gottsberger; Frieder Mayer
Source:: Journal of evolutionary biology 2019 v.32 no.9 pp. 921-930
ISSN:: 1010-061X
Subject:: Chorthippus biguttulus; Chorthippus brunneus; backcrossing; courtship; females; filters; gene flow; grasshoppers; hybridization; hybrids; males; neurons; reciprocal crosses; reproductive success; sexual selection; sympatry
Abstract:: ... Sexual selection can lead to the rapid evolution of premating hybridization barriers and allows accelerated diversification and speciation within an evolutionary lineage. Especially during early stages of divergence, hybridization may impede further divergence, which strongly depends on the reproductive success of hybrids. Behavioural sterility of hybrids can limit or even prevent homogenizing gen ...
DOI:: 10.1111/jeb.13490
PubMed:: 31127969
PubMed Central:: PMC6851987
: https://doi.org/10.1111/jeb.13490

5. Improving rice blast resistance of Feng39S through molecular marker-assisted backcrossing

Author:: Dabing Yang; Jianhao Tang; Di Yang; Ying Chen; Jauhar Ali; Tongmin Mou
Source:: Rice 2019 v.12 no.1 pp. 70
ISSN:: 1939-8425
Subject:: Magnaporthe oryzae; Oryza sativa; agronomic traits; backcrossing; blast disease; genetic background; grain yield; homozygosity; hybrids; introgression; leaves; resistance genes; rice; single nucleotide polymorphism; single nucleotide polymorphism arrays; temperature
Abstract:: ... BACKGROUND: Rice blast caused by Magnaporthe oryzae is one of the most widespread biotic constraints that threaten rice production. Using major resistance genes for rice blast resistance improvement is considered to be an efficient and technically feasible approach to achieve optimal grain yield. RESULTS: We report here the introgression of the broad-spectrum blast resistance gene Pi2 into the gen ...
DOI:: 10.1186/s12284-019-0329-3
PubMed:: 31502096
PubMed Central:: PMC6733936
: https://doi.org/10.1186/s12284-019-0329-3

6. Molecular Characterisation of a Supergene Conditioning Super-High Vitamin C in Kiwifruit Hybrids

Author:: John McCallum; William Laing; Sean Bulley; Susan Thomson; Andrew Catanach; Martin Shaw; Mareike Knaebel; Jibran Tahir; Simon Deroles; Gail Timmerman-Vaughan; Ross Crowhurst; Elena Hilario; Matthew Chisnall; Robyn Lee; Richard Macknight; Alan Seal
Source:: Plants 2019 v.8 no.7 pp. -
ISSN:: 2223-7747
Subject:: Actinidia chinensis; Actinidia eriantha; alleles; ascorbic acid; backcrossing; diploidy; fruits; gene expression regulation; gene segregation; genome-wide association study; genotype; hybrids; kiwifruit; leaves; loci; major genes; messenger RNA; metabolism; pleiotropy; polymerase chain reaction; quantitative trait loci; sequence analysis
Abstract:: ... During analysis of kiwifruit derived from hybrids between the high vitamin C (ascorbic acid; AsA) species Actinidia eriantha and A. chinensis, we observed bimodal segregation of fruit AsA concentration suggesting major gene segregation. To test this hypothesis, we performed whole-genome sequencing on pools of hybrid genotypes with either high or low AsA fruit. Pool-GWAS (genome-wide association st ...
DOI:: 10.3390/plants8070237
PubMed:: 31336644
PubMed Central:: PMC6681377
: https://doi.org/10.3390/plants8070237

7. Accelerated molecular breeding of a novel P/TGMS line with broad-spectrum resistance to rice blast and bacterial blight in two-line hybrid rice

Author:: Jiaming Mi; Dabing Yang; Yi Chen; Jiefeng Jiang; Haipeng Mou; Junbin Huang; Yidan Ouyang; Tongmin Mou
Source:: Rice 2018 v.11 no.1 pp. 11
ISSN:: 1939-8425
Subject:: Oryza sativa; backcrossing; blast disease; blight; disease resistance; genes; grain yield; high-throughput nucleotide sequencing; hybrids; introgression; leaves; males; marker-assisted selection; rice; single nucleotide polymorphism; China
Abstract:: ... BACKGROUND: Breeding two-line hybrid rice with disease resistance is an effective approach to stabilize rice yield in commercial rice production of China. RESULTS: We improved the blast and bacterial blight resistance of Guangzhan63-4S, an elite photoperiod- and thermo-sensitive male sterile (P/TGMS) line widely used in two-line hybrid rice, by introducing the R genes Pi2 and Xa7 conferring resist ...
DOI:: 10.1186/s12284-018-0203-8
PubMed:: 29455311
PubMed Central:: PMC5816735
: https://doi.org/10.1186/s12284-018-0203-8

8. Development and evaluation of improved lines with broad-spectrum resistance to rice blast using nine resistance genes

Author:: Haichao Jiang; Zhi Li; Jia Liu; Zhikang Shen; Guanjun Gao; Qinglu Zhang; Yuqing He
Source:: Rice 2019 v.12 no.1 pp. 29
ISSN:: 1939-8425
Subject:: Zea mays; additive effect; backcrossing; blast disease; crop production; hybrids; introgression; marker-assisted selection; parents; pesticides; resistance genes; rice; sustainable technology
Abstract:: ... BACKGROUND: Rice blast disease is a major restriction in rice production. That is usually managed using chemical pesticides, which are expensive in terms of cost and environment hazards. Use of blast-resistance genes to develop resistant varieties may therefore be a more economical and environmentally friendly method for effective control. RESULTS: In this study, we improved the blast resistance o ...
DOI:: 10.1186/s12284-019-0292-z
PubMed:: 31062101
PubMed Central:: PMC6502921
: https://doi.org/10.1186/s12284-019-0292-z

9. Genetic analysis of male sterility obtained from a rice cultivar Lebed backcrossed with Taichung 65

Author:: Tetsuya Murakami; Tomohiko Kazama; Kinya Toriyama
Source:: Rice 2018 v.11 no.1 pp. 30
ISSN:: 1939-8425
Subject:: backcrossing; cultivars; rice; hybrids; alleles; Oryza sativa; parents; recurrent selection; heterozygosity; pollen; agronomic traits; self-pollination; genetic analysis; progeny; sporophytes; male sterility; females; crops
Abstract:: ... BACKGROUND: Male sterility is a useful agronomic trait for breeding of self-pollinating crops and is often observed in the progenies of hybrids of distantly related species, for example, Oryza sativa L. subsp. indica and O. sativa L. subsp. japonica. To explore new male sterile lines in rice, we performed successive backcrosses using a japonica cultivar Taichung 65 (T65) as a recurrent pollen pare ...
DOI:: 10.1186/s12284-018-0222-5
PubMed:: 29725869
PubMed Central:: PMC5934291
: https://doi.org/10.1186/s12284-018-0222-5

10. Genome-wide association analysis of intra-specific QTL associated with the resistance for enteric septicemia of catfish

Author:: Huitong Shi; Tao Zhou; Xiaozhu Wang; Yujia Yang; Chenglong Wu; Shikai Liu; Lisui Bao; Ning Li; Zihao Yuan; Yulin Jin; Suxu Tan; Wenwen Wang; Xiaoxiao Zhong; Guyu Qin; Xin Geng; Dongya Gao; Rex Dunham; Zhanjiang Liu
Source:: Molecular genetics and genomics 2018 v.293 no.6 pp. 1365-1378
ISSN:: 1617-4615
Subject:: Edwardsiella ictaluri; Ictalurus furcatus; Ictalurus punctatus; antigens; backcrossing; catfish; disease resistance; disease severity; genetic improvement; genome-wide association study; hybrids; immunity; interspecific hybridization; major histocompatibility complex; marker-assisted selection; nucleotide sequences; pathogens; quantitative trait loci; septicemia; single nucleotide polymorphism
Abstract:: ... Disease resistance is one of the most important traits for aquaculture industry. For catfish industry, enteric septicemia of catfish (ESC), caused by the bacterial pathogen Edwardsiella ictaluri, is the most severe disease, causing enormous economic losses every year. In this study, we used three channel catfish families with 900 individuals (300 fish per family) and the 690K catfish SNP array, an ...
DOI:: 10.1007/s00438-018-1463-0
CHORUS:: 10.1007/s00438-018-1463-0
: https://doi.org/10.1007/s00438-018-1463-0

11. Identification of novel genes significantly affecting growth in catfish through GWAS analysis

Author:: Ning Li; Tao Zhou; Xin Geng; Yulin Jin; Xiaozhu Wang; Shikai Liu; Xiaoyan Xu; Dongya Gao; Qi Li; Zhanjiang Liu
Source:: Molecular genetics and genomics 2018 v.293 no.3 pp. 587-599
ISSN:: 1617-4615
Subject:: Ictalurus furcatus; Ictalurus punctatus; animal growth; aquaculture; backcrossing; catfish; females; genes; genome-wide association study; genomics; growth traits; hybrids; linkage groups; males; muscles; obesity; quantitative trait loci; single nucleotide polymorphism; skeletal development
Abstract:: ... Growth is the most important economic trait in aquaculture. Improvements in growth-related traits can enhance production, reduce costs and time to produce market-size fish. Catfish is the major aquaculture species in the United States, accounting for 65% of the US finfish production. However, the genes underlying growth traits in catfish were not well studied. Currently, the majority of the US cat ...
DOI:: 10.1007/s00438-017-1406-1
CHORUS:: 10.1007/s00438-017-1406-1
: https://doi.org/10.1007/s00438-017-1406-1

12. Plantation performance of chestnut hybrids and progenitors on reclaimed Appalachian surface mines

Author:: Jeff G. Skousen; Kara Dallaire; Steffany Scagline-Mellor; Alexis Monteleone; Lindsay Wilson-Kokes; Jessica Joyce; Calene Thomas; Travis Keene; Curtis DeLong; Thomas Cook; Douglass F. Jacobs
Source:: New forests 2018 v.49 no.5 pp. 599-611
ISSN:: 0169-4286
Subject:: Castanea dentata; Castanea mollissima; backcrossing; blight; coal; forest canopy; forest stands; forest trees; forests; hybrids; land use; mined soils; mining; pH; parents; planting; sandstone; seedlings; seeds; vigor; Appalachian region; West Virginia
Abstract:: ... Reclamation of surface mined sites to forests is a preferred post-mining land use option, but performance of planted trees on such sites is variable. American chestnut (Castanea dentata (Marsh.) Borkh.) is a threatened forest tree in the eastern USA that may become an important species option for mine reclamation. Chestnut restoration using backcross hybrids that incorporate blight resistance may ...
DOI:: 10.1007/s11056-018-9643-7
PubMed:: 30147210
PubMed Central:: PMC6096894
: https://doi.org/10.1007/s11056-018-9643-7

13. Population structure, genetic diversity and downy mildew resistance among Ocimum species germplasm

Author:: Robert M. Pyne; Josh A. Honig; Jennifer Vaiciunas; Christian A. Wyenandt; James E. Simon
Source:: BMC plant biology 2018 v.18 no.1 pp. 69
ISSN:: 1471-2229
Subject:: Ocimum basilicum; Peronospora; allopolyploidy; arithmetics; backcrossing; basil; disease outbreaks; downy mildew; expressed sequence tags; gene flow; gene frequency; genetic variation; germplasm; hybrids; introgression; microsatellite repeats; models; outcrossing; phenotype; phenotypic variation; phylogeny; population structure; progeny; variance
Abstract:: ... BACKGROUND: The basil (Ocimum spp.) genus maintains a rich diversity of phenotypes and aromatic volatiles through natural and artificial outcrossing. Characterization of population structure and genetic diversity among a representative sample of this genus is severely lacking. Absence of such information has slowed breeding efforts and the development of sweet basil (Ocimum basilicum L.) with resi ...
DOI:: 10.1186/s12870-018-1284-7
PubMed:: 29685108
PubMed Central:: PMC5914031
CHORUS:: 10.1186/s12870-018-1284-7
: https://doi.org/10.1186/s12870-018-1284-7

14. Combination of Acylglucose QTL reveals additive and epistatic genetic interactions and impacts insect oviposition and virus infection

Author:: John R. Smeda; Anthony L. Schilmiller; Taylor Anderson; Sulley Ben-Mahmoud; Diane E. Ullman; Thomas M. Chappell; Andre Kessler; Martha A. Mutschler
Source:: Molecular breeding 2018 v.38 no.1 pp. 3
ISSN:: 1380-3743
Subject:: Frankliniella occidentalis; Solanum pennellii; Spodoptera exigua; backcrossing; epistasis; fatty acid composition; fatty acids; genes; hybrids; insect pests; introgression; larvae; marker-assisted selection; moieties; oviposition; quantitative trait loci; self-pollination; sugars; tomatoes; trichomes; viruses; weight gain
Abstract:: ... Acylsugars are important insect defense compounds produced at high levels by glandular trichomes of the wild tomato, Solanum pennellii. Marker-assisted selection was used to select for plants containing the three AGQTL named AG3QTL, AG4QTL, and AG11QTL from self-pollinated populations derived from an interspecific backcross population of CU071026 x (CU071026 x S. pennellii LA716). High acylglucose ...
DOI:: 10.1007/s11032-017-0756-z
CHORUS:: 10.1007/s11032-017-0756-z
: https://doi.org/10.1007/s11032-017-0756-z

15. Genetic effects and genotype × environment interactions govern seed oil content in Brassica napus L.

Author:: Yanli Guo; Ping Si; Nan Wang; Jing Wen; Bin Yi; Chaozhi Ma; Jinxing Tu; Jitao Zou; Tingdong Fu; Jinxiong Shen
Source:: BMC genetics 2017 v.18 no.1 pp. 1
ISSN:: 1471-2156
Subject:: Brassica napus; backcrossing; cultivars; cytoplasm; diploidy; general combining ability; genetic factors; genetic variance; genotype-environment interaction; hybrids; lipid content; maternal effect; models; parents; phenotypic variation; rapeseed; seeds; specific combining ability; variance
Abstract:: ... BACKGROUND: As seed oil content (OC) is a key measure of rapeseed quality, better understanding the genetic basis of OC would greatly facilitate the breeding of high-oil cultivars. Here, we investigated the components of genetic effects and genotype × environment interactions (GE) that govern OC using a full diallel set of nine parents, which represented a wide range of the Chinese rapeseed cultiv ...
DOI:: 10.1186/s12863-016-0468-0
PubMed:: 28056775
PubMed Central:: PMC5217400
: https://doi.org/10.1186/s12863-016-0468-0

16. Heterotic affinity and combining ability of exotic maize inbred lines for resistance to aflatoxin accumulation

Author:: Silvestro Meseka; W. Paul Williams; Marilyn L. Warburton; Robert L. Brown; Joao Augusto; Alejandro Ortega-Beltran; Ranajit Bandyopadhyay; Abebe Menkir
Source:: Euphytica 2018 v.214 no.10 pp. 184
ISSN:: 0014-2336
Subject:: heterosis; inheritance (genetics); backcrossing; hybrids; parents; grain yield; Zea mays; humans; testcrosses; corn; aflatoxins; livestock; inbred lines; plant breeding; general combining ability; nutritive value; endosperm; grain quality; death; specific combining ability; Nigeria
Abstract:: ... Aflatoxin accumulation in maize (Zea mays L.) kernels is a serious economic and health problem that reduces grain quality and nutritional values and causes death to livestock and humans. Understanding the genetic parameters and heterotic responses of exotic maize inbred lines can facilitate their use for developing aflatoxin resistant parents of hybrids in Africa. This study was designed to (1) de ...
DOI:: 10.1007/s10681-018-2254-8
CHORUS:: 10.1007/s10681-018-2254-8
: https://doi.org/10.1007/s10681-018-2254-8

17. Marker assisted pyramiding of Bph6 and Bph9 into elite restorer line 93–11 and development of functional marker for Bph9

Author:: Yang Wang; Weihua Jiang; Hongmei Liu; Ya Zeng; Bo Du; Lili Zhu; Guangcun He; Rongzhi Chen
Source:: Rice 2017 v.10 no.1 pp. 51
ISSN:: 1939-8425
Subject:: Nilaparvata lugens; Oryza sativa; agronomic traits; antibiosis; backcrossing; breeding programs; crop production; cultivars; genetic background; germplasm; heterozygosity; hybrids; isogenic lines; marker-assisted selection; resistance genes; rice; Asia
Abstract:: ... BACKGROUND: The brown planthopper (BPH) has become the most destructive and a serious threat to the rice production in Asia. Breeding the resistant varieties with improved host resistance is the most effective and ecosystem-friendly strategy of BPH biological management. As host resistance was always broken down by the presence of the upgrading BPH biotype, the more resistant varieties with novel ...
DOI:: 10.1186/s12284-017-0194-x
PubMed:: 29282566
PubMed Central:: PMC5745207
: https://doi.org/10.1186/s12284-017-0194-x

18. Marker-assisted breeding for introgression of opaque-2 allele into elite maize inbred line BML-7

Author:: M. S. R. Krishna; S. Sokka Reddy; Sadam D. V. Satyanarayana
Source:: 3 Biotech 2017 v.7 no.3 pp. 165
ISSN:: 2190-572X
Subject:: backcrossing; Zea mays; hybrids; alleles; lysine; marker-assisted selection; corn; tryptophan; breeding programs; endosperm; introgression
Abstract:: ... Improvement of quality protein maize (QPM) along with high content of lysine and tryptophan had foremost importance in maize breeding program. The efficient and easiest way of developing QPM hybrids was by backcross breeding in marker aided selection. Hence, the present investigation aimed at conversion of elite maize inbred line BML-7 into QPM line. CML-186 was identified to be a donor variety as ...
DOI:: 10.1007/s13205-017-0842-2
PubMed:: 28660457
PubMed Central:: PMC5489451
: https://doi.org/10.1007/s13205-017-0842-2

19. QTL mapping with different genetic systems for nine non-essential amino acids of cottonseeds

Author:: Haiying Liu; Alfred Quampah; Jinhong Chen; Jinrong Li; Zhuangrong Huang; Qiuling He; Chunhai Shi; Shuijin Zhu
Source:: Molecular genetics and genomics 2017 v.292 no.3 pp. 671-684
ISSN:: 1617-4615
Subject:: Gossypium hirsutum; amino acids; backcrossing; chromosome mapping; computer software; cottonseed; cultivars; genome; hybrids; phenotypic variation; quantitative trait loci
Abstract:: ... Amino acid is an important nutrient resource for both human and animals. Using a set of 188 RILs population derived from an elite hybrid cross of upland cotton cultivars ‘HS46’ × ‘MARCABUCAG8US-1-88’ and their immortal F₂ (IF₂) with reciprocal backcrosses BC₁F₁ and BC₂F₁ (BC) populations in two environments, the QTLs located on the embryo genome and maternal plant genome for nine amino acids of co ...
DOI:: 10.1007/s00438-017-1303-7
PubMed:: 28315961
PubMed Central:: PMC5429363
: https://doi.org/10.1007/s00438-017-1303-7

20. Quantitative trait locus analysis of heterosis for plant height and ear height in an elite maize hybrid zhengdan 958 by design III

Author:: Hongjian Li; Qingsong Yang; Nannan Fan; Ming Zhang; Huijie Zhai; Zhongfu Ni; Yirong Zhang
Source:: BMC genetics 2017 v.18 no.1 pp. 36
ISSN:: 1471-2156
Subject:: agronomic traits; backcrossing; corn; corn ears; genetic improvement; heterosis; hybrids; inbred lines; overdominance; quantitative trait loci
Abstract:: ... BACKGROUND: Plant height (PH) and ear height (EH) are two important agronomic traits in maize selection breeding. F₁ hybrid exhibit significant heterosis for PH and EH as compared to their parental inbred lines. To understand the genetic basis of heterosis controlling PH and EH, we conducted quantitative trait locus (QTL) analysis using a recombinant inbreed line (RIL) based design III population ...
DOI:: 10.1186/s12863-017-0503-9
PubMed:: 28415964
PubMed Central:: PMC5392948
: https://doi.org/10.1186/s12863-017-0503-9

21. RAD-seq reveals genetic structure of the F2-generation of natural willow hybrids (Salix L.) and a great potential for interspecific introgression

Author:: Susanne Gramlich; Natascha Dorothea Wagner; Elvira Hörandl
Source:: BMC plant biology 2018 v.18 no.1 pp. 317
ISSN:: 1471-2229
Subject:: Salix purpurea; backcrossing; gene flow; genetic variation; genome; glaciers; global warming; hybrids; introgression; models; parents; progeny; secondary contact; segregation distortion; single nucleotide polymorphism; Alps region
Abstract:: ... BACKGROUND: Hybridization of species with porous genomes can eventually lead to introgression via repeated backcrossing. The potential for introgression between species is reflected by the extent of segregation distortion in later generation hybrids. Here we studied a population of hybrids between Salix purpurea and S. helvetica that has emerged within the last 30 years on a glacier forefield in t ...
DOI:: 10.1186/s12870-018-1552-6
PubMed:: 30509159
PubMed Central:: PMC6276181
: https://doi.org/10.1186/s12870-018-1552-6

22. RNA‐guided Cas9 as an in vivo desired‐target mutator in maize

Author:: Chuxi Li; Changlin Liu; Xiantao Qi; Yongchun Wu; Xiaohong Fei; Long Mao; Beijiu Cheng; Xinhai Li; Chuanxiao Xie
Source:: Plant biotechnology journal 2017 v.15 no.12 pp. 1566-1576
ISSN:: 1467-7644
Subject:: Zea mays; backcrossing; corn; crops; gene editing; hybrids; introgression; leaf angle; loci; mutants; mutation; transgenic plants
Abstract:: ... The RNA‐guided Cas9 system is a versatile tool for genome editing. Here, we established a RNA‐guided endonuclease (RGEN) system as an in vivo desired‐target mutator (DTM) in maize to reduce the linkage drag during breeding procedure, using the LIGULELESS1 (LG1) locus as a proof‐of‐concept. Our system showed 51.5%–91.2% mutation frequency in T0 transgenic plants. We then crossed the T1 plants stabl ...
DOI:: 10.1111/pbi.12739
PubMed:: 28379609
PubMed Central:: PMC5698053
: https://doi.org/10.1111/pbi.12739

23. Untangling the reticulate history of species complexes and horticultural breeds in Abelia (Caprifoliaceae)

Author:: Sven Landrein; Sven Buerki; Hua-Feng Wang; James J. Clarkson
Source:: Annals of botany 2017 v.120 no.2 pp. 257-269
ISSN:: 1095-8290
Subject:: Abelia parvifolia; Bayesian theory; Caprifoliaceae; DNA; DNA fingerprinting; amplified fragment length polymorphism; backcrossing; cultivars; data collection; genetic analysis; genetic variation; horticulture; hybridization; hybrids; natural selection; nucleotide sequences; ornamental woody plants; selection methods; sympatry; China
Abstract:: ... Background and Aims The genetic and morphological consequences of natural selection and selective breeding are explored in the genus Abelia. The genus consists of ornamental shrubs endemic to China, which have been bred to create attractive and diverse cultivars. Methods DNA fingerprinting (AFLP) and DNA sequence data are used to investigate the genetic diversity among 46 accessions of Abelia (22 ...
DOI:: 10.1093/aob/mcw279
PubMed:: 28334098
PubMed Central:: PMC5737605
: https://doi.org/10.1093/aob/mcw279

24. A step change in the transfer of interspecific variation into wheat from Amblyopyrum muticum

Author:: Julie King; Surbhi Grewal; Cai‐yun Yang; Stella Hubbart; Duncan Scholefield; Stephen Ashling; Keith J. Edwards; Alexandra M. Allen; Amanda Burridge; Claire Bloor; Alessandro Davassi; Glacy J. da Silva; Ken Chalmers; Ian P. King
Source:: Plant biotechnology journal 2017 v.15 no.2 pp. 217-226
ISSN:: 1467-7644
Subject:: Amblyopyrum muticum; Triticum aestivum; backcrossing; genetic variation; genome; hexaploidy; hybrids; interspecific variation; introgression; linkage groups; single nucleotide polymorphism; wheat; wild relatives
Abstract:: ... Despite some notable successes, only a fraction of the genetic variation available in wild relatives has been utilized to produce superior wheat varieties. This is as a direct result of the lack of availability of suitable high‐throughput technologies to detect wheat/wild relative introgressions when they occur. Here, we report on the use of a new SNP array to detect wheat/wild relative introgress ...
DOI:: 10.1111/pbi.12606
PubMed:: 27459228
PubMed Central:: PMC5258861
: https://doi.org/10.1111/pbi.12606

25. Development of Cytoplasmic Male Sterile IR24 and IR64 Using CW-CMS/Rf17 System

Author:: Kinya Toriyama; Tomohiko Kazama
Source:: Rice 2016 v.9 no.1 pp. 22
ISSN:: 1939-8425
Subject:: agronomic traits; backcrossing; cultivars; cytoplasmic male sterility; genes; hybrids; maintainer lines; males; marker-assisted selection; parents; restorer lines; wild rice
Abstract:: ... BACKGROUND: A wild-abortive-type (WA) cytoplasmic male sterility (CMS) has been almost exclusively used for breeding three-line hybrid rice. Many indica cultivars are known to carry restorer genes for WA-CMS lines and cannot be used as maintainer lines. Especially elite indica cultivars IR24 and IR64 are known to be restorer lines for WA-CMS lines, and are used as male parents for hybrid seed prod ...
DOI:: 10.1186/s12284-016-0097-2
PubMed:: 27167516
PubMed Central:: PMC4864779
: https://doi.org/10.1186/s12284-016-0097-2

26. Dissecting combining ability effect in a rice NCII-III population provides insights into heterosis in indica-japonica cross

Author:: Hao Zhou; Duo Xia; Jing Zeng; Gonghao Jiang; Yuqing He
Source:: Rice 2017 v.10 no.1 pp. 39
ISSN:: 1939-8425
Subject:: Oryza sativa; agronomic traits; backcrossing; doubled haploids; general combining ability; grain yield; heterosis; hybrids; loci; parents; phenotype; quantitative trait loci; rice; seed set; specific combining ability
Abstract:: ... BACKGROUND: Combining ability is a measure for selecting elite parents that make the highest contributions to hybrid performance. However, the genetic bases of combining ability and how they contributed to heterosis is seldomly known. RESULTS: We constructed a both NCII and NCIII population derived from an indica-japonica cross to study the relationship among parental performance, combining abilit ...
DOI:: 10.1186/s12284-017-0179-9
PubMed:: 28853048
PubMed Central:: PMC5574824
: https://doi.org/10.1186/s12284-017-0179-9

27. Expressional divergences of two desaturase genes determine the opposite ratios of two sex pheromone components in Helicoverpa armigera and Helicoverpa assulta

Author:: Rui-Ting Li; Chao Ning; Ling-Qiao Huang; Jun-Feng Dong; Xianchun Li; Chen-Zhu Wang
Source:: Insect biochemistry and molecular biology 2017 v.90 pp. 90-100
ISSN:: 0965-1748
Subject:: Helicoverpa armigera; Helicoverpa assulta; alcohols; aldehyde reductase; backcrossing; biochemical pathways; genes; hybrids; pheromone glands; progeny; reverse transcriptase polymerase chain reaction; sex pheromones; sympatry; transcriptome
Abstract:: ... The sympatric closely related species Helicoverpa armigera and Helicoverpa assulta use 97:3 and 7:93 of (Z)-11-hexadecenal and (Z)-9-hexadecenal, respectively, as their sex pheromone to find/locate correct sex mates. Moreover, (Z)-11-hexadecenyl alcohol and (Z)-9-hexadecenyl alcohol are more abundant in the pheromone gland of H. assulta than in that of H. armigera. To clarify the molecular basis o ...
DOI:: 10.1016/j.ibmb.2017.09.016
CHORUS:: 10.1016/j.ibmb.2017.09.016
: https://doi.org/10.1016/j.ibmb.2017.09.016

28. High‐density interspecific genetic linkage mapping provides insights into genomic incompatibility between channel catfish and blue catfish

Author:: S. Liu; Y. Li; Z. Qin; X. Geng; L. Bao; L. Kaltenboeck; H. Kucuktas; R. Dunham; Z. Liu
Source:: Animal genetics 2016 v.47 no.1 pp. 81-90
ISSN:: 0268-9146
Subject:: Ictalurus furcatus; Ictalurus punctatus; alleles; aquaculture; backcrossing; catfish; chromosome mapping; evolution; females; gene flow; hybrids; introgression; linkage groups; males; reproductive isolation; single nucleotide polymorphism; United States
Abstract:: ... Catfish is the leading aquaculture species in the United States. The interspecific hybrid catfish produced by mating female channel catfish with male blue catfish outperform both of their parent species in a number of traits. However, mass production of the hybrids has been difficult because of reproductive isolation. Investigations of genome structure and organization of the hybrids provide insig ...
DOI:: 10.1111/age.12372
CHORUS:: 10.1111/age.12372
Chorus Open Access:: 10.1111/age.12372
: https://doi.org/10.1111/age.12372

29. Molecular Breeding of Rice Restorer Lines and Hybrids for Brown Planthopper (BPH) Resistance Using the Bph14 and Bph15 Genes

Author:: Hongbo Wang; Shengtuo Ye; Tongmin Mou
Source:: Rice 2016 v.9 no.1 pp. 53
ISSN:: 1939-8425
Subject:: Nilaparvata lugens; Oryza sativa; agronomic traits; backcrossing; bioassays; breeding programs; crop production; food security; genes; genetic markers; genetic resistance; heterozygosity; homozygosity; hybrids; marker-assisted selection; parents; phenotype; restorer lines; rice; single nucleotide polymorphism
Abstract:: ... BACKGROUND: The development of hybrid rice is a practical approach for increasing rice production. However, the brown planthopper (BPH), Nilaparvata lugens Stål, causes severe yield loss of rice (Oryza sativa L.) and can threaten food security. Therefore, breeding hybrid rice resistant to BPH is the most effective and economical strategy to maintain high and stable production. Fortunately, numerou ...
DOI:: 10.1186/s12284-016-0126-1
PubMed:: 27704482
PubMed Central:: PMC5050184
: https://doi.org/10.1186/s12284-016-0126-1

30. Polyploidy and interspecific hybridization: partners for adaptation, speciation and evolution in plants

Author:: Karine Alix; Pierre R. Gérard; Trude Schwarzacher; J. S. (Pat) Heslop-Harrison
Source:: Annals of botany 2017 v.120 no.2 pp. 183-194
ISSN:: 1095-8290
Subject:: Angiospermae; adaptive radiation; ancestry; backcrossing; chromosome aberrations; crops; diploidy; ecosystems; genes; genomics; genotype; hybrids; interspecific hybridization; mutation; phylogeny; polyploidy; sequence analysis; transposons
Abstract:: ... Background Polyploidy or whole-genome duplication is now recognized as being present in almost all lineages of higher plants, with multiple rounds of polyploidy occurring in most extant species. The ancient evolutionary events have been identified through genome sequence analysis, while recent hybridization events are found in about half of the world’s crops and wild species. Building from this ne ...
DOI:: 10.1093/aob/mcx079
PubMed:: 28854567
PubMed Central:: PMC5737848
: https://doi.org/10.1093/aob/mcx079

31. A genome‐wide association study of heat stress‐associated SNPs in catfish

Author:: Y. Jin; T. Zhou; X. Geng; S. Liu; A. Chen; J. Yao; C. Jiang; S. Tan; B. Su; Z. Liu
Source:: Animal genetics 2017 v.48 no.2 pp. 233-236
ISSN:: 0268-9146
Subject:: Ictalurus furcatus; Ictalurus punctatus; backcrossing; breeding programs; catfish; climate change; cytoskeleton; energy metabolism; females; genes; genome-wide association study; heat; heat stress; heat tolerance; hybrids; interspecific hybridization; iron; linkage groups; males; protein degradation; protein folding; single nucleotide polymorphism; ubiquitination
Abstract:: ... Heat tolerance is a complex and economically important trait for catfish genetic breeding programs. With global climate change, it is becoming an increasingly important trait. To better understand the molecular basis of heat stress, a genome‐wide association study (GWAS) was carried out using the 250 K catfish SNP array with interspecific backcross progenies, which derived from crossing female cha ...
DOI:: 10.1111/age.12482
CHORUS:: 10.1111/age.12482
: https://doi.org/10.1111/age.12482

32. Diagnostic single nucleotide polymorphism markers to identify hybridization between dromedary and Bactrian camels

Author:: Emily Ruiz; Elmira Mohandesan; Robert R. Fitak; Pamela A. Burger
Source:: Conservation genetics resources 2015 v.7 no.2 pp. 329-332
ISSN:: 1877-7252
Subject:: Camelus bactrianus; Camelus dromedarius; alleles; ancestry; backcrossing; camels; genetic markers; hybrids; introgression; loci; milk; single nucleotide polymorphism; wool; China; Mongolia
Abstract:: ... The technique to produce hybrid Tulu or Nar camels from crosses between dromedary and Bactrian camels is common throughout Middle Eastern and Central Asian countries. Formerly, these hybrids were highly valued as strong and persistent pack animals but today are bred to improve milk or wool quality in the respective species and for camel wrestling. We developed a diagnostic single nucleotide polymo ...
DOI:: 10.1007/s12686-015-0420-z
PubMed:: 26161164
PubMed Central:: PMC4486411
: https://doi.org/10.1007/s12686-015-0420-z

33. Identification of maize-derived dominant gametophyte factors

Author:: Zachary G. Jones; Major M. Goodman; Matthew D. Krakowsky
Source:: Euphytica 2016 v.209 no.1 pp. 63-69
ISSN:: 0014-2336
Subject:: Zea; alleles; backcrossing; corn; farmers; gametophytes; hybrids; inbreeding; introgression; markets; plant breeding; pollen; screening
Abstract:: ... The use of gametophyte factors to protect specialty-type maize has long been advocated, but as of yet, they have made very little impact on preventing pollen contamination due to the complications associated with breeding with these materials, mainly the additive nature of the alleles. A dominant gametophyte factor (DGF) overcomes this problem, allowing for less time consuming production of gameto ...
DOI:: 10.1007/s10681-016-1635-0
CHORUS:: 10.1007/s10681-016-1635-0
: https://doi.org/10.1007/s10681-016-1635-0

34. Marker-assisted breeding of the rice restorer line Wanhui 6725 for disease resistance, submergence tolerance and aromatic fragrance

Author:: Yanchang Luo; Tingchen Ma; Aifang Zhang; Kar Hui Ong; Zefu Li; Jianbo Yang; Zhongchao Yin
Source:: Rice 2016 v.9 no.1 pp. 66
ISSN:: 1939-8425
Subject:: abiotic stress; agronomic traits; backcrossing; blast disease; blight; crop production; disease resistance; economic development; farmers; field experimentation; food crops; genes; genetic background; genetic resistance; grain quality; hybrids; introgression; marker-assisted selection; market value; odors; rice; staple foods; stress tolerance; submergence; viability; China
Abstract:: ... BACKGROUND: Rice is a staple food crop in the world. With the increase in world population and economic development, farmers need to produce more rice in limited field. However, the rice production is frequently affected by biotic and abiotic stresses. The use of natural disease resistance and stress tolerance through genetic breeding is the most efficient and economical way to combat or acclimate ...
DOI:: 10.1186/s12284-016-0139-9
PubMed:: 27905090
PubMed Central:: PMC5130935
: https://doi.org/10.1186/s12284-016-0139-9

35. Overcoming sterility and unilateral incompatibility of Solanum lycopersicum × S. sitiens hybrids

Author:: Roger T. Chetelat
Source:: Euphytica 2016 v.207 no.2 pp. 319-330
ISSN:: 0014-2336
Subject:: Solanum lycopersicum; Solanum sitiens; backcrossing; chromosomes; diploidy; drought; embryo culture; females; genome; hybrids; indigenous species; introgression; males; parents; pathogens; pistil; plant breeding; pollen; progeny; salinity; temperature; tomatoes; Chile
Abstract:: ... The wild tomato relative Solanum sitiens is a rare endemic plant of the Atacama Desert of Chile. This species exhibits unique traits—tolerance to drought, salinity and low temperatures, resistances to certain pathogens, and modified fruit ripening—that could be of interest to tomato breeders. However, strong reproductive barriers, including hybrid inviability, sterility, and unilateral incompatibi ...
DOI:: 10.1007/s10681-015-1543-8
CHORUS:: 10.1007/s10681-015-1543-8
: https://doi.org/10.1007/s10681-015-1543-8

36. Phylogenetic origin of limes and lemons revealed by cytoplasmic and nuclear markers

Author:: Franck Curk; Frédérique Ollitrault; Andres Garcia-Lor; François Luro; Luis Navarro; Patrick Ollitrault
Source:: Annals of botany 2016 v.117 no.4 pp. 565-583
ISSN:: 1095-8290
Subject:: Citrus aurantiifolia; Citrus aurantium; Citrus jambhiri; Citrus latifolia; Citrus limettioides; Citrus limon; Citrus limonia; Citrus macrophylla; Citrus maxima; Citrus medica; Citrus reticulata; apomixis; attitudes and opinions; backcrossing; diploidy; genome; haploidy; heterozygosity; horticulture; hybrids; interspecific hybridization; lemons; limes; males; mitochondria; numerical taxonomy; ovules; phenotypic variation; phylogeny; rootstocks; single nucleotide polymorphism; tetraploidy; triploidy; vegetative propagation
Abstract:: ... Background and Aims The origin of limes and lemons has been a source of conflicting taxonomic opinions. Biochemical studies, numerical taxonomy and recent molecular studies suggested that cultivated Citrus species result from interspecific hybridization between four basic taxa (C. reticulata, C. maxima, C. medica and C. micrantha). However, the origin of most lemons and limes remains controversial ...
DOI:: 10.1093/aob/mcw005
PubMed:: 26944784
PubMed Central:: PMC4817432
: https://doi.org/10.1093/aob/mcw005

37. Population genetic analysis of Anisakis simplex s.l. and Anisakis pegreffii (Nematoda, Anisakidae) from parapatric areas and their contact zone

Author:: N. Abattouy; A. Valero; J. Lozano; S.D. Barón; C. Romero; J. Martín-Sánchez
Source:: Parasite epidemiology and control 2016 v.1 no.2 pp. 169-176
ISSN:: 2405-6731
Subject:: Anisakis pegreffii; Anisakis simplex; backcrossing; coasts; digestion; epidemiology; genes; genetic analysis; genetic markers; genetic variation; genotype; hybrids; internal transcribed spacers; larvae; mitochondria; mitochondrial DNA; parasites; restriction endonucleases; ribosomal DNA; sympatry; Atlantic Ocean
Abstract:: ... Genetic markers (ribosomal DNA and mitochondrial DNA) were used for molecular dissection of the Anisakis simplex sensu lato (s.l). complex populations. Host fish were caught off Moroccan coasts, where only Anisakis pegreffii is present, the sympatric area comprising Spanish coasts, and the Little Sole Bank fishing area from Nordeast Atlantic Ocean where the only present species is A. simplex sensu ...
DOI:: 10.1016/j.parepi.2016.02.003
PubMed:: 29988196
PubMed Central:: PMC5991843
: https://doi.org/10.1016/j.parepi.2016.02.003

38. Rooting depth and root depth distribution of Trifolium repens × T. uniflorum interspecific hybrids

Author:: S. N. Nichols; R. W. Hofmann; W. M. Williams; C. van Koten
Source:: Annals of botany 2016 v.118 no.4 pp. 699-710
ISSN:: 1095-8290
Subject:: Trifolium repens; backcrossing; cultivars; drought tolerance; fine roots; hybrids; interspecific hybridization; regression analysis; root systems; rooting; sand; soil water
Abstract:: ... Background and aims Traits related to root depth distribution were examined in Trifolium repens × T. uniflorum backcross 1 (BC₁) hybrids to determine whether root characteristics of white clover could be improved by interspecific hybridization. Methods Two white clover cultivars, two T. uniflorum accessions and two BC₁ populations were grown in 1 -m deep tubes of sand culture. Maximum rooting dept ...
DOI:: 10.1093/aob/mcw067
PubMed:: 27208735
PubMed Central:: PMC5055622
: https://doi.org/10.1093/aob/mcw067

39. Evidence to support natural hybridization between Anopheles sinensis and Anopheles kleini (Diptera: Culicidae): possibly a significant mechanism for gene introgression in sympatric populations

Author:: Wej Choochote; Gi-Sik Min; Pewpan M Intapan; Chairat Tantrawatpan; Atiporn Saeung; Viraphong Lulitanond
Source:: Parasites & vectors 2014 v.7 no.1 pp. 36
ISSN:: 1756-3305
Subject:: Anopheles sinensis; Plasmodium vivax; backcrossing; cytochrome-c oxidase; genes; hybrids; internal transcribed spacers; introgression; malaria; mitochondrial DNA; polymerase chain reaction; public health; ribosomal DNA; sequence analysis; sympatry; South Korea
Abstract:: ... BACKGROUND: Malaria caused by Plasmodium vivax is still a public health problem in the Republic of Korea (ROK), particularly regarding the recent re-emergence of this malarial species near the demilitarized zone in northwestern Paju City, Gyeonggi-do Province. Currently, at least 4 species (An. kleini, An. pullus, An. belenrae and An. lesteri) of the Hyrcanus Group are reported as possible natural ...
DOI:: 10.1186/1756-3305-7-36
PubMed:: 24443885
PubMed Central:: PMC3899613
: https://doi.org/10.1186/1756-3305-7-36

40. High-resolution mapping and characterization of qRgls2, a major quantitative trait locus involved in maize resistance to gray leaf spot

Author:: Ling Xu; Yan Zhang; Siquan Shao; Wei Chen; Jing Tan; Mang Zhu; Tao Zhong; Xingming Fan; Mingliang Xu
Source:: BMC plant biology 2014 v.14 no.1 pp. 230
ISSN:: 1471-2229
Subject:: Cercospora zeae-maydis; additive gene effects; backcrossing; centromeres; corn; cost effectiveness; disease control; genes; hybrids; inbred lines; leaf spot; progeny testing; quantitative trait loci
Abstract:: ... BACKGROUND: Gray leaf spot (GLS) caused by Cercospora zeae-maydis (Czm) or Cercospora zeina (Cz) is a devastating maize disease and results in substantial yield reductions worldwide. GLS resistance is a quantitatively inherited trait. The development and cultivation of GLS-resistant maize hybrids are the most cost-effective and efficient ways to control this disease. RESULTS: We previously detecte ...
DOI:: 10.1186/s12870-014-0230-6
PubMed:: 25174589
PubMed Central:: PMC4175277
: https://doi.org/10.1186/s12870-014-0230-6

41. Hybrid sterility in crosses between two Brazilian sibling species of the Anopheles albitarsis complex

Author:: Nathalia Giglio Fontoura; Alejandra Saori Araki; Renata Van Der Maas Azevedo; Allan Kardec Ribeiro Galardo; Alexandre Afranio Peixoto; José Bento Pereira Lima
Source:: Parasites & vectors 2014 v.7 no.1 pp. 559
ISSN:: 1756-3305
Subject:: Anopheles albitarsis; allozymes; backcrossing; cytogenetics; females; gene flow; humans; hybrids; insemination; introgression; malaria; male fertility; random amplified polymorphic DNA technique; restriction fragment length polymorphism; sex ratio; sibling species; siblings; viability
Abstract:: ... BACKGROUND: Complexes of cryptic species are common in several taxa and this is also the case in the Anopheles genus, a group including all known human malaria vectors. The Anopheles albitarsis complex comprises at least nine cryptic species, some of which are implicated as vectors of human malaria. Several different types of data have been generated for this species complex such as cytogenetics, ...
DOI:: 10.1186/s13071-014-0559-6
PubMed:: 25471342
PubMed Central:: PMC4264609
: https://doi.org/10.1186/s13071-014-0559-6

42. Maintenance of strong morphological differentiation despite ongoing natural hybridization between sympatric species of Lomatia (Proteaceae)

Author:: Emma J. McIntosh; Maurizio Rossetto; Peter H. Weston; Glenda M. Wardle
Source:: Annals of botany 2014 v.113 no.5 pp. 861-872
ISSN:: 0305-7364
Subject:: Lomatia; backcrossing; cohesion; gene flow; genotyping; habitats; hybrids; indigenous species; introgression; microsatellite repeats; morphometry; phenotype; sympatry
Abstract:: ... Background and Aims When species cohesion is maintained despite ongoing natural hybridization, many questions are raised about the evolutionary processes operating in the species complex. This study examined the extensive natural hybridization between the Australian native shrubs Lomatia myricoides and L. silaifolia (Proteaceae). These species exhibit striking differences in morphology and ecologi ...
DOI:: 10.1093/aob/mct314
PubMed:: 24489011
PubMed Central:: PMC3962242
: https://doi.org/10.1093/aob/mct314

43. Natural hybridization and asymmetric introgression at the distribution margin of two Buddleja species with a large overlap

Author:: Rong-Li Liao; Yong-Peng Ma; Wei-Chang Gong; Gao Chen; Wei-Bang Sun; Ren-Chao Zhou; Tobias Marczewski
Source:: BMC plant biology 2015 v.15 no.1 pp. 146
ISSN:: 1471-2229
Subject:: Buddleja; alleles; backcrossing; cross pollination; hybrids; interspecific hybridization; introgression; loci; mutation; pollen; seed set; seedlings; seeds; viability; China
Abstract:: ... BACKGROUND: Natural hybridization in plants is universal and plays an important role in evolution. Based on morphology it has been presumed that hybridization occurred in the genus Buddleja, though genetic studies confirming this assumption have not been conducted to date. The two species B. crispa and B. officinalis overlap in their distributions over a wide range in South-West China, and we aime ...
DOI:: 10.1186/s12870-015-0539-9
PubMed:: 26081944
PubMed Central:: PMC4470074
: https://doi.org/10.1186/s12870-015-0539-9

44. No evidence for assortative mating within a willow warbler migratory divide

Author:: Miriam Liedvogel; Keith W Larson; Max Lundberg; Arzu Gursoy; Leonard I Wassenaar; Keith A Hobson; Staffan Bensch; Susanne Åkesson
Source:: Frontiers in zoology 2014 v.11 no.1 pp. 52
ISSN:: 1742-9994
Subject:: Phylloscopus; ancestry; assortative mating; backcrossing; breeding sites; color; forces; genetic markers; genetic traits; hybridization; hybrids; male effect; migratory behavior; nitrogen; phenotype; plumage; progeny; stable isotopes; wintering grounds; Africa; Sweden
Abstract:: ... INTRODUCTION: In contact zones, genetic mixing of two taxa can be restricted by prezygotic (e.g. assortative mating) or postzygotic (lower fitness of hybrid offspring) barriers, or a combination of the two. A hybrid zone between two willow warbler subspecies (Phylloscopus trochilus trochilus, P. t. acredula) with distinctive migratory strategies occurs in central Sweden. These subspecies exhibit d ...
DOI:: 10.1186/s12983-014-0052-2
PubMed:: 25053967
PubMed Central:: PMC4105873
: https://doi.org/10.1186/s12983-014-0052-2

45. Optimized breeding strategies for multiple trait integration: III. Parameters for success in version testing

Author:: Xiaochun Sun; Rita H. Mumm
Source:: Molecular breeding 2015 v.35 no.10 pp. 201
ISSN:: 1380-3743
Subject:: backcrossing; case studies; computer simulation; corn; females; genes; genotype; germplasm; hybrids; introgression; males; value added
Abstract:: ... Multiple trait integration (MTI) is the process by which a target hybrid (or variety) is converted to add value-added traits to the comprehensive performance package represented by that genotype. The goal is to recover all the attributes of the target hybrid, with the addition of the specified value-added traits. In maize, this process utilizes the backcross breeding method to incorporate transgen ...
DOI:: 10.1007/s11032-015-0397-z
PubMed:: 26491398
PubMed Central:: PMC4605974
: https://doi.org/10.1007/s11032-015-0397-z

46. UVB-induced gene expression in the skin of Xiphophorus maculatus Jp 163 B

Author:: Kuan Yang; Mikki Boswell; Dylan J. Walter; Kevin P. Downs; Kimberly Gaston-Pravia; Tzintzuni Garcia; Yingjia Shen; David L. Mitchell; Ronald B. Walter
Source:: Comparative Biochemistry and Physiology, Part C 2014 v.163 pp. 86-94
ISSN:: 1532-0456
Subject:: Xiphophorus maculatus; backcrossing; carcinogenesis; fish; fish skin; gene expression; genes; hybrids; inheritance (genetics); melanoma; models; nucleotide sequences; sequence analysis; transcriptome
Abstract:: ... Xiphophorus fish and interspecies hybrids represent long-standing models to study the genetics underlying spontaneous and induced tumorigenesis. The recent release of the Xiphophorus maculatus genome sequence will allow global genetic regulation studies of genes involved in the inherited susceptibility to UVB-induced melanoma within select backcross hybrids. As a first step toward this goal, we re ...
DOI:: 10.1016/j.cbpc.2014.01.008
PubMed:: 24556253
PubMed Central:: PMC4067948
: https://doi.org/10.1016/j.cbpc.2014.01.008

47. Unidirectional hybridization and reproductive barriers between two heterostylous primrose species in north-west Yunnan, China

Author:: Yongpeng Ma; Weijia Xie; Xiaoling Tian; Weibang Sun; Zhikun Wu; Richard Milne
Source:: Annals of botany 2014 v.113 no.5 pp. 763-775
ISSN:: 0305-7364
Subject:: Primula; amplified fragment length polymorphism; backcrossing; chloroplast DNA; females; flowers; hybridization; hybrids; longevity; morphs; pollen; pollen tubes; pollination; pollinators; viability; China
Abstract:: ... Background and Aims Heteromorphy in flowers has a profound effect on breeding patterns within a species, but little is known about how it affects reproductive barriers between species. The heterostylous genus Primula is very diverse in the Himalaya region, but hybrids there have been little researched. This study examines in detail a natural hybrid zone between P. beesiana and P. bulleyana . Metho ...
DOI:: 10.1093/aob/mct312
PubMed:: 24492637
PubMed Central:: PMC3962241
: https://doi.org/10.1093/aob/mct312

48. What haplodiploids can teach us about hybridization and speciation

Author:: Konrad Lohse; Laura Ross
Source:: Molecular ecology 2015 v.24 no.20 pp. 5075-5077
ISSN:: 0962-1083
Subject:: animals; backcrossing; chromosome number; diploidy; eggs; females; genes; haploidy; hybrids; inheritance (genetics); introgression; males; models; sons
Abstract:: ... Most evolutionary theory focuses on species that reproduce through sexual reproduction where both sexes have a diploid chromosome count. Yet a substantial proportion of multicellular species display complex life cycles, with both haploid and diploid life stages. A classic example is haplodiploidy, where females develop from fertilized eggs and are diploid, while males develop from unfertilized egg ...
DOI:: 10.1111/mec.13393
PubMed:: 26477297
PubMed Central:: PMC4620704
: https://doi.org/10.1111/mec.13393

49. A genetic map of Peromyscus with chromosomal assignment of linkage groups (a Peromyscus genetic map)

Author:: Jane Kenney-Hunt; Adrienne Lewandowski; Travis C. Glenn; Julie L. Glenn; Olga V. Tsyusko; Rachel J. O’Neill; Judy Brown; Clifton M. Ramsdell; Quang Nguyen; Tony Phan; Kimberly R. Shorter; Michael J. Dewey; Gabor Szalai; Paul B. Vrana; Michael R. Felder
Source:: Mammalian genome 2014 v.25 no.3-4 pp. 160-179
ISSN:: 0938-8990
Subject:: Mus; Peromyscus maniculatus; Rattus; X chromosome; autosomes; backcrossing; chromosome mapping; genome; genomic imprinting; genotyping; hybrids; linkage groups; mice; microsatellite repeats; monogamy; phenotype; progeny; rats
Abstract:: ... The rodent genus Peromyscus is the most numerous and species-rich mammalian group in North America. The naturally occurring diversity within this genus allows opportunities to investigate the genetic basis of adaptation, monogamy, behavioral and physiological phenotypes, growth control, genomic imprinting, and disease processes. Increased genomic resources including a high quality genetic map are ...
DOI:: 10.1007/s00335-014-9500-8
PubMed:: 24445420
PubMed Central:: PMC3961507
: https://doi.org/10.1007/s00335-014-9500-8

50. Contemporary gene flow between wild An. gambiae s.s. and An. arabiensis

Author:: David Weetman; Keith Steen; Emily J Rippon; Henry D Mawejje; Martin J Donnelly; Craig S Wilding
Source:: Parasites & vectors 2014 v.7 no.1 pp. 345
ISSN:: 1756-3305
Subject:: Anopheles arabiensis; Anopheles gambiae; backcrossing; confidence interval; diagnostic techniques; gene flow; genotype; hybrids; introgression; malaria; polymerase chain reaction; swarms; vector control; Uganda
Abstract:: ... BACKGROUND: In areas where the morphologically indistinguishable malaria mosquitoes Anopheles gambiae Giles and An. arabiensis Patton are sympatric, hybrids are detected occasionally via species-diagnostic molecular assays. An. gambiae and An. arabiensis exhibit both pre- and post-reproductive mating barriers, with swarms largely species-specific and male F1 (first-generation) hybrids sterile. Con ...
DOI:: 10.1186/1756-3305-7-345
PubMed:: 25060488
PubMed Central:: PMC4124135
: https://doi.org/10.1186/1756-3305-7-345

51. Estimation of linkage disequilibrium and interspecific gene flow in Ficedula flycatchers by a newly developed 50k single‐nucleotide polymorphism array

Author:: Takeshi Kawakami; Niclas Backström; Reto Burri; Arild Husby; Pall Olason; Amber M. Rice; Murielle Ålund; Anna Qvarnström; Hans Ellegren
Source:: Molecular ecology resources 2014 v.14 no.6 pp. 1248-1260
ISSN:: 1755-098X
Subject:: Z chromosome; ancestry; autosomes; backcrossing; birds; ecology; evolution; gene flow; genome assembly; genomic islands; genotyping; heterozygosity; hybrids; linkage disequilibrium; nucleotide sequences; selection criteria; single nucleotide polymorphism; sympatry
Abstract:: ... With the access to draft genome sequence assemblies and whole‐genome resequencing data from population samples, molecular ecology studies will be able to take truly genome‐wide approaches. This now applies to an avian model system in ecological and evolutionary research: Old World flycatchers of the genus Ficedula, for which we recently obtained a 1.1 Gb collared flycatcher genome assembly and ide ...
DOI:: 10.1111/1755-0998.12270
PubMed:: 24784959
PubMed Central:: PMC4368375
: https://doi.org/10.1111/1755-0998.12270

52. Genetic diversity in morphological characters and phenolic acids content resulting from an interspecific cross between eggplant (Solanum melongena) and its wild ancestor (S. incanum)

Author:: J. Prohens; B. D. Whitaker; M. Plazas; S. Vilanova; M. Hurtado; M. Blasco; P. Gramazio; J. R. Stommel
Source:: Annals of applied biology 2013 v.162 no.2 pp. 242-257
ISSN:: 0003-4746
Subject:: Solanum incanum; Solanum melongena; alleles; backcrossing; chlorogenic acid; eggplants; genetic variation; hybrids; interspecific hybridization; parents; phenolic acids; plant characteristics; selfing; wild plants
Abstract:: ... Solanum incanum, the wild ancestor of eggplant (S. melongena) has been considered as a source of variation for high phenolic acids content in breeding programs aimed at improving the functional quality of eggplant. We have evaluated the morphological and phenolic acids content in an interspecific family involving S. incanum (P1), S. melongena (P2), its interspecific hybrid (F1), the selfing of the ...
Handle:: 10113/58553
DOI:: 10.1111/aab.12017
: https://doi.org/10.1111/aab.12017

53. Marker-assisted breeding of Indonesia local rice variety Siputeh for semi-dwarf phonetype, good grain quality and disease resistance to bacterial blight

Author:: Yanchang Luo; Sabaruddin Zakaria; Bakhtiar Basyah; Tingchen Ma; Zefu Li; Jianbo Yang; Zhongchao Yin
Source:: Rice 2014 v.7 no.1 pp. 33
ISSN:: 1939-8425
Subject:: Xanthomonas oryzae pv. oryzae; abiotic stress; amylose; backcrossing; blight; climate; cooking; disease resistance; field experimentation; food crops; genes; grain quality; grain yield; hybrids; islands; loci; marker-assisted selection; phenotype; planting; rice; self-pollination; China; Indonesia
Abstract:: ... BACKGROUND: Rice is one of the most important staple food crops in Asia. Since the first green revolution beginning in 1960s, high-yield semidwarf modern rice varieties have been widely planted; however, traditional rice varieties with tall plant type are still grown in many countries due to their good grain quality and adaptation to local climate and environment. Siputeh, a local rice variety mai ...
DOI:: 10.1186/s12284-014-0033-2
PubMed:: 26224562
PubMed Central:: PMC4884010
: https://doi.org/10.1186/s12284-014-0033-2

54. Mating compatibility in the parasitic protist Trypanosoma brucei

Author:: Lori Peacock; Vanessa Ferris; Mick Bailey; Wendy Gibson
Source:: Parasites & vectors 2014 v.7 no.1 pp. 78
ISSN:: 1756-3305
Subject:: African trypanosomiasis; Glossina; Trypanosoma brucei; backcrossing; clones; eukaryotic cells; flagellum; genotype; germ cells; haploidy; hybrids; karyotyping; mating types; meiosis; microsatellite repeats; models; parasites; parents; progeny; salivary glands
Abstract:: ... BACKGROUND: Genetic exchange has been described in several kinetoplastid parasites, but the most well-studied mating system is that of Trypanosoma brucei, the causative organism of African sleeping sickness. Sexual reproduction takes place in the salivary glands (SG) of the tsetse vector and involves meiosis and production of haploid gametes. Few genetic crosses have been carried out to date and c ...
DOI:: 10.1186/1756-3305-7-78
PubMed:: 24559099
PubMed Central:: PMC3936861
: https://doi.org/10.1186/1756-3305-7-78

55. Optimized breeding strategies for multiple trait integration: I. Minimizing linkage drag in single event introgression

Author:: Ting Peng; Xiaochun Sun; Rita H. Mumm
Source:: Molecular breeding 2014 v.33 no.1 pp. 89-104
ISSN:: 1380-3743
Subject:: backcrossing; computer simulation; corn; genome; germplasm; hybrids; introgression; population size; selection intensity
Abstract:: ... From a breeding standpoint, multiple trait integration (MTI) is a four-step process of converting an elite variety/hybrid for value-added traits (e.g. transgenic events) using backcross breeding, ultimately regaining the performance attributes of the target hybrid along with reliable expression of the value-added traits. In the light of the overarching goal of recovering equivalent performance in ...
DOI:: 10.1007/s11032-013-9936-7
PubMed:: 24482600
PubMed Central:: PMC3890577
: https://doi.org/10.1007/s11032-013-9936-7

56. Optimized breeding strategies for multiple trait integration: II. Process efficiency in event pyramiding and trait fixation

Author:: Ting Peng; Xiaochun Sun; Rita H. Mumm
Source:: Molecular breeding 2014 v.33 no.1 pp. 105-115
ISSN:: 1380-3743
Subject:: backcrossing; computer simulation; corn; doubled haploids; genes; genetic markers; genotyping; germplasm; homozygosity; hybrids; introgression; parents; probability; seeds; selfing; wheat
Abstract:: ... Multiple trait integration (MTI) is a multi-step process of converting an elite variety/hybrid for value-added traits (e.g. transgenic events) through backcross breeding. From a breeding standpoint, MTI involves four steps: single event introgression, event pyramiding, trait fixation, and version testing. This study explores the feasibility of marker-aided backcross conversion of a target maize hy ...
DOI:: 10.1007/s11032-013-9937-6
PubMed:: 24482601
PubMed Central:: PMC3890544
: https://doi.org/10.1007/s11032-013-9937-6

57. Transcriptional Dynamics of LTR Retrotransposons in Early Generation and Ancient Sunflower Hybrids

Author:: Mark C. Ungerer; Takeshi Kawakami
Source:: Genome biology and evolution 2013 v.5 no.2 pp. 329-337
Subject:: Helianthus annuus; abiotic stress; backcrossing; hybridization; hybrids; retrotransposons; terminal repeat sequences; transcription (genetics); transcriptional activation; transposons
Abstract:: ... Hybridization and abiotic stress are natural agents hypothesized to influence activation and proliferation of transposable elements in wild populations. In this report, we examine the effects of these agents on expression dynamics of both quiescent and transcriptionally active sublineages of long terminal repeat (LTR) retrotransposons in wild sunflower species with a notable history of transposabl ...
DOI:: 10.1093/gbe/evt006
PubMed:: 23335122
PubMed Central:: PMC3590766
: https://doi.org/10.1093/gbe/evt006

58. Fusion of two divergent fungal individuals led to the recent emergence of a unique widespread pathogen species

Author:: Eva Holtgrewe Stukenbrock; Freddy Bugge Christiansen; Troels Toftebjerg Hansen; Julien Yann Dutheil; Mikkel Heide Schierup
Source:: Proceedings of the National Academy of Sciences of the United States of America 2012 v.109 no.27 pp. 10954-10959
ISSN:: 0027-8424
Subject:: Mycosphaerella graminicola; backcrossing; chromosomes; fungi; genes; genetic drift; haploidy; haplotypes; hybridization; hybrids; natural selection; new species; parents; pathogens; population dynamics; wheat
Abstract:: ... In a genome alignment of five individuals of the ascomycete fungus Zymoseptoria pseudotritici , a close relative of the wheat pathogen Z. tritici (synonym Mycosphaerella graminicola), we observed peculiar diversity patterns. Long regions up to 100 kb without variation alternate with similarly long regions of high variability. The variable segments in the genome alignment are organized into two mai ...
DOI:: 10.1073/pnas.1201403109
PubMed:: 22711811
PubMed Central:: PMC3390827
: https://doi.org/10.1073/pnas.1201403109

59. Hybridization and introgression between the exotic Siberian elm, Ulmus pumila, and the native Field elm, U. minor, in Italy

Author:: Johanne Brunet; Juan E. Zalapa; Francesco Pecori; Alberto Santini
Source:: Biological invasions 2013 pp. -
ISSN:: 1387-3547
Subject:: Ceratocystis ulmi; Ulmus pumila; backcrossing; ecological invasion; evolution; genetic markers; genetic variation; heterozygosity; hybrids; indigenous species; introduced species; introgression; pandemic; Italy; United States
Abstract:: ... In response to the first Dutch elm disease (DED) pandemic, Siberian elm, Ulmus pumila, was planted to replace the native elm, U. minor, in Italy. The potential for hybridization between these two species is high and repeated hybridization could result in the genetic swamping of the native species and facilitate the evolution of invasiveness in the introduced species. We used genetic markers to exa ...
Handle:: 10113/56779
DOI:: 10.1007/s10530-013-0486-z
: https://doi.org/10.1007/s10530-013-0486-z

60. Hybridization barriers between diploid Solanum tuberosum and wild Solanum raphanifolium.

Author:: B. N. Weber; A. J. Hamernik; S. H. Jansky
Source:: Genetic resources and crop evolution 2012 v.59 no. pp. 1287-1293
ISSN:: 1573-5109
Subject:: Solanum raphanifolium; Solanum tuberosum; agronomic traits; backcrossing; clones; diploidy; females; genetic variation; germplasm; haploidy; hybridization; hybrids; nuclear-cytoplasmic interactions; parents; pest resistance; plant fertility; potatoes; reciprocal crosses; seed set; seeds; wild relatives
Abstract:: ... Wild potato germplasm represents a unique, diverse and accessible resource for disease and pest resistance, along with useful agronomic traits that may be introgressed into the cultivated potato (Solanum tuberosum L.). Hybridization of diploid wild Solanum species with haploids (2x) of cultivated potato (4x) is generally an effective technique for introducing genetic diversity and desirable traits ...
Handle:: 10113/57816
DOI:: DOI 10.1007/s10722-012-9883-x
: https://doi.org/DOI 10.1007/s10722-012-9883-x

61. Population genomics reveals a possible history of backcrossing and recombination in the gynogenetic fish Poecilia formosa

Author:: Laura Alberici da Barbiano; Zachariah Gompert; Andrea S. Aspbury; Caitlin R. Gabor; Chris C. Nice
Source:: Proceedings of the National Academy of Sciences of the United States of America 2013 v.110 no.34 pp. 13797-13802
ISSN:: 0027-8424
Subject:: Poecilia formosa; Poecilia latipinna; Poecilia mexicana; backcrossing; extinction; fish; genetic variation; genome; gynogenesis; heterozygosity; hybrids; loci; metagenomics; mutation; natural selection
Abstract:: ... Unisexual sperm-dependent vertebrates are of hybrid origins, rare, and predicted to be short-lived as a result of several challenges arising from their mode of reproduction. In particular, because of a lack of recombination, clonal species are predicted to have a low potential to respond to natural selection. However, many unisexual sperm-dependent species persist, and assessing the genetic divers ...
DOI:: 10.1073/pnas.1303730110
PubMed:: 23918384
PubMed Central:: PMC3752203
: https://doi.org/10.1073/pnas.1303730110

62. Routine mapping of Fusarium wilt resistance in BC1 populations of Arabidopsis thaliana

Author:: Andrew C Diener
Source:: BMC plant biology 2013 v.13 no.1 pp. 171
ISSN:: 1471-2229
Subject:: Arabidopsis thaliana; Fusarium oxysporum; Fusarium wilt; backcrossing; disease resistance; genes; genotyping; hybrids; loci; loss-of-function mutation; mutants; pathogens; quantitative trait loci
Abstract:: ... BACKGROUND: Susceptibility to Fusarium wilt disease varies among wild accessions of Arabidopsis thaliana. Six RESISTANCE TO FUSARIUM OXYSPORUM (RFO) quantitative trait loci (QTLs) controlling the resistance of accession Columbia-0 (Col-0) and susceptibility of Taynuilt-0 to Fusarium oxysporum forma specialis matthioli (FOM) are detected in a recombinant population derived from a single backcross o ...
DOI:: 10.1186/1471-2229-13-171
PubMed:: 24172069
PubMed Central:: PMC3819736
: https://doi.org/10.1186/1471-2229-13-171

63. Transfer of auxinic herbicide resistance from Brassica kaber to Brassica juncea and Brassica rapa through embryo rescue

Author:: J. Mithila; J. Christopher Hall
Source:: In vitro cellular & developmental biology 2013 v.49 no.4 pp. 461-467
ISSN:: 1054-5476
Subject:: broadleaf weeds; pollen; backcrossing; weed control; hybrids; DNA; ploidy; Brassica juncea; screening; dicamba; evolution; cole crops; plant establishment; pistil; progeny; herbicide resistance; tillage; Sinapis arvensis subsp. arvensis; flow cytometry; biotypes; Brassica rapa
Abstract:: ... Auxinic herbicides are widely used in agriculture to selectively control broadleaf weeds. Prolonged use of auxinic herbicides has resulted in the evolution of resistance to these herbicides in some biotypes of Brassica kaber (wild mustard), a common weed in agricultural crops. In this study, auxinic herbicide resistance from B. kaber was transferred to Brassica juncea and Brassica rapa, two commer ...
DOI:: 10.1007/s11627-013-9515-y
PubMed:: 23990700
PubMed Central:: PMC3751267
: https://doi.org/10.1007/s11627-013-9515-y

64. Characterization of interspecific hybrids and backcross generations from crosses between two cultivated eggplants (Solanum melongena and S. aethiopicum Kumba group)and implications for eggplant breeding

Author:: Jaime Prohens; Mariola Plazas; Maria D. Raigon; Jose M. Segui-Simarro; John R. Stommel; Santiago Vilanova
Source:: Euphytica 2012 v.186 pp. 517-538
ISSN:: 0014-2336
Subject:: Solanum melongena; backcrossing; eggplants; fruits; genotype; heritability; hybrids; interspecific hybridization; microsatellite repeats; parents; pollen; progeny; seed set; segregation distortion
Abstract:: ... Common (Solanum melongena L.) and scarlet (S. aethiopicum L.) eggplants are cultivated for their fruits and form part of the same genepool. We have studied plant and fruit characteristics, pollen fertility and seed set, phenolics content, and fruit flesh browning in accessions of S. melongena and S. aethiopicum Kumba group, as well as interspecific hybrids between these species and first backcross ...
Handle:: 10113/58537
DOI:: 10.1007/s10681-012-0652-x
: https://doi.org/10.1007/s10681-012-0652-x

65. Flow cytometry confirms reticulate evolution and reveals triploidy in Central European Diphasiastrum taxa (Lycopodiaceae, Lycophyta)

Author:: H. Wilfried Bennert; Karsten Horn; Marion Kauth; Jörg Fuchs; Iben Sophie Bisgaard Jakobsen; Benjamin Øllgaard; Martin Schnittler; Matthias Steinberg; Ronnie Viane
Source:: Annals of botany 2011 v.108 no.5 pp. 867-876
ISSN:: 0305-7364
Subject:: backcrossing; Lycopodiaceae; gametophytes; diploidy; haploidy; hybrids; evolution; genome; DNA; parents; spores; flow cytometry; iodides; triploidy; ferns and fern allies; swarms; parentage; screening
Abstract:: ... BACKGROUND AND AIMS: Interspecific Diphasiastrum hybrids have been assumed to be homoploid and to produce well-formed spores serving sexual reproduction. If this were the case, forms intermediate between hybrids and parents or hybrid swarms should be expected. The purpose of this study was: (1) to check whether homoploidy consistently applies to the three hybrids throughout their Central European ...
DOI:: 10.1093/aob/mcr208
PubMed:: 21835817
PubMed Central:: PMC3177684
: https://doi.org/10.1093/aob/mcr208

66. Proteomic analyses of the Xiphophorus Gordon–Kosswig melanoma model

Author:: Amy N. Perez; Lee Oehlers; Shelia J. Heater; Rachell E. Booth; Ronald B. Walter; Wendi M. David
Source:: Comparative biochemistry and physiology 2012 v.155 no.1 pp. 81-88
ISSN:: 1532-0456
Subject:: Xiphophorus; backcrossing; biochemical pathways; gel electrophoresis; hybrids; interspecific hybridization; mass spectrometry; melanin; melanoma; models; pigmentation; progeny; protein synthesis; proteins; proteomics; quantitative analysis; tissues
Abstract:: ... Interspecies hybridization between the platyfish X. maculatus Jp 163 A, and the swordtail X. helleri (Sarabia), generates F₁ hybrids with pronounced melanin pigmentation. Backcrossing of F₁ hybrids with the X. helleri parent results in 25% of progeny that will spontaneously develop melanoma. We have applied proteomic methods to this Gordon-Kosswig (G-K) melanoma model to identify candidate protein ...
DOI:: 10.1016/j.cbpc.2011.05.017
PubMed:: 21672637
PubMed Central:: PMC3223274
: https://doi.org/10.1016/j.cbpc.2011.05.017

67. Eco-geographically divergent diploids, Caucasian clover (Trifolium ambiguum) and western clover (T. occidentale), retain most requirements for hybridization

Author:: Warren M. Williams; Isabelle M. Verry; Helal A. Ansari; S. Wajid Hussain; Ihsan Ullah; Michelle L. Williamson; Nicholas W. Ellison
Source:: Annals of botany 2011 v.108 no.7 pp. 1269-1277
ISSN:: 0305-7364
Subject:: progeny testing; altitude; pollen; roots; backcrossing; hybrids; diploidy; sea level; open pollination; chromosome pairing; Trifolium ambiguum; triploidy; hybridization; progeny; germ cells; stolons; colchicine; gene flow; endosperm; nucleotide sequences; rhizomes; Western European region; Northern Africa; Europe; Asia
Abstract:: ... BACKGROUND AND AIMS: DNA sequence similarities and hybridization patterns in Trifolium (clovers) section Trifoliastrum suggest that rapid radiation from a common ancestral source led to this complex of diverse species distributed across Europe, western Asia and North Africa. Two of the most geographically and ecologically divergent of these species are the rhizomatous T. ambiguum from high altitud ...
DOI:: 10.1093/aob/mcr226
PubMed:: 21880661
PubMed Central:: PMC3197454
: https://doi.org/10.1093/aob/mcr226

68. Species by Environment Interactions Affect Pyrrolizidine Alkaloid Expression in Senecio jacobaea, Senecio aquaticus, and Their Hybrids

Author:: Kirk, Heather; Vrieling, Klaas; Van Der Meijden, Eddy; Klinkhamer, Peter G. L.
Source:: Journal of chemical ecology 2010 v.36 no.4 pp. 378-387
ISSN:: 0098-0331
Subject:: backcrossing; pyrrolizidine alkaloids; hybrids; secondary metabolites; Jacobaea vulgaris; resistance mechanisms; water; natural selection; nutrients; habitats; roots; shoots
Abstract:: ... We examined the effects of water and nutrient availability on the expression of the defense pyrrolizidine alkaloids (PAs) in Senecio jacobaea and S. aquaticus. Senecio jacobaea, and S. aquaticus are adapted to different natural habitats, characterized by differing abiotic conditions and different selection pressures from natural enemies. We tested if PA concentration and diversity are plastic over ...
DOI:: 10.1007/s10886-010-9772-8
PubMed:: 20309618
PubMed Central:: PMC2850523
: https://doi.org/10.1007/s10886-010-9772-8

69. Ultraviolet A does not induce melanomas in a Xiphophorus hybrid fish model

Author:: Mitchell, David L.; Fernandez, André A.; Nairn, Rodney S.; Garcia, Rachel; Paniker, Lakshmi; Trono, David; Thames, Howard D.; Gimenez-Conti, Irma
Source:: Proceedings of the National Academy of Sciences of the United States of America 2010 v.107 no.20 pp. 9329-9334
ISSN:: 0027-8424
Subject:: DNA damage; animal models; backcrossing; etiology; fish; histopathology; hybrids; irradiation; melanoma; neonates; phenotype; pigmentation; ultraviolet radiation; wavelengths
Abstract:: ... We examined the wavelength dependence of ultraviolet (UV) ra-diation (UVR)-induced melanoma in a Xiphophorus backcross hybrid model previously reported to be susceptible to melanoma induction by ultraviolet A (UVA) and visible light. Whereas ultraviolet B (UVB) irradiation of neonates yielded high frequencies of melanomas in pigmented fish, UVA irradiation resulted in melanoma frequencies that wer ...
DOI:: 10.1073/pnas.1000324107
PubMed:: 20439744
PubMed Central:: PMC2889042
: https://doi.org/10.1073/pnas.1000324107

70. Did backcrossing contribute to the origin of hybrid edible bananas?

Author:: De Langhe, Edmond; Hřibová, Eva; Carpentier, Sebastien; Doležel, Jaroslav; Swennen, Rony
Source:: Annals of botany 2010 v.106 no.6 pp. 849-857
ISSN:: 0305-7364
Subject:: Musa acuminata; Musa balbisiana; backcrossing; bananas; chromosome translocation; clones; crops; cultivars; cytotypes; diploidy; domestication; evolution; genome; humid tropics; hybrids; phenotype; plantains (fruit); polyploidy; prediction; staple foods
Abstract:: ... BACKGROUND: Bananas and plantains (Musa spp.) provide a staple food for many millions of people living in the humid tropics. The cultivated varieties (cultivars) are seedless parthenocarpic clones of which the origin remains unclear. Many are believed to be diploid and polyploid hybrids involving the A genome diploid M. acuminata and the B genome M. balbisiana, with the hybrid genomes consisting o ...
DOI:: 10.1093/aob/mcq187
PubMed:: 20858591
PubMed Central:: PMC2990659
: https://doi.org/10.1093/aob/mcq187

71. Ecologically dependent postmating isolation between sympatric host forms of Neochlamisus bebbianae leaf beetles

Author:: Egan, Scott P.; Funk, Daniel J.
Source:: Proceedings of the National Academy of Sciences of the United States of America 2009 v.106 no.46 pp. 19426-19431
ISSN:: 0027-8424
Subject:: backcrossing; insect growth; hybrids; phytophagous insects; food plants; Acer rubrum; Salix; Chrysomelidae; genetic variation; reproductive isolation; leaves
Abstract:: ... Ecological speciation is the promotion of reproductive isolation via the divergent adaptation of populations to alternative environments. A prediction peculiar to ecological speciation is that hybrids between such populations should be adapted poorly to parental environments, yielding reduced fitness and postmating isolation. However, F₁ analyses alone cannot demonstrate that ecological ("extrinsi ...
DOI:: 10.1073/pnas.0909424106
PubMed:: 19875692
PubMed Central:: PMC2780776
: https://doi.org/10.1073/pnas.0909424106

72. Evidence for the Emergence of New Rice Types of Interspecific Hybrid Origin in West African Farmers' Fields

Author:: Nuijten, Edwin; Treuren, Robbert van; Struik, Paul C.; Mokuwa, Alfred; Okry, Florent; Teeken, Béla; Richards, Paul
Source:: PloS one 2009 v.4 no.10 pp. -
ISSN:: 1932-6203
Subject:: Oryza sativa; rice; Oryza glaberrima; interspecific hybridization; genetic variation; amplified fragment length polymorphism; hybrids; fields; crop production; backcrossing; genotype; Western Africa
Abstract:: ... In West Africa two rice species (Oryza glaberrima Steud. and Oryza sativa L.) co-exist. Although originally it was thought that interspecific hybridization is impossible without biotechnological methods, progenies of hybridization appear to occur in farmer fields. AFLP analysis was used to assess genetic diversity in West Africa (including the countries The Gambia, Senegal, Guinea Bissau, Guinea C ...
DOI:: 10.1371/journal.pone.0007335
PubMed:: 19806197
PubMed Central:: PMC2752159
: https://doi.org/10.1371/journal.pone.0007335

73. Expression of the “glanded-plant and glandless-seed” trait of Australian diploid cottons in different genetic backgrounds

Author:: Benbouza, Halima; Lognay, George; Scheffler, Jodi; Baudoin, Jean Pierre; Mergeai, Guy
Source:: Euphytica 2009 v.165 no.2 pp. 211-221
ISSN:: 0014-2336
Subject:: chemical concentration; terpenoids; backcrossing; hybrids; diploidy; seeds; Gossypium hirsutum; cottonseed; tetraploidy; gossypol; high performance liquid chromatography; interspecific hybridization; wild relatives; Gossypium arboreum; Australia
Abstract:: ... The expression of the “glanded-plant and glandless-seed” trait was assessed using High Performance Liquid Chromatography (HPLC) analysis methods in different Gossypium hybrids obtained by crossing Australian diploid cottons and various diploid and tetraploid species. Significant variation in the gossypol content in the seed was observed among the analyzed genotypes. HPLC data demonstrated that the ...
Handle:: 10113/21730
DOI:: 10.1007/s10681-008-9772-8
: https://doi.org/10.1007/s10681-008-9772-8

74. Agronomic performance of soybean hybrids from single, three-way, four-way, and five-way crosses, and backcross populations

Author:: Perez, Paola T.; Cianzio, Silvia R.; Ortiz-Perez, Evelyn; Palmer, Reid G.
Source:: Journal of crop improvement 2009 v.23 no.2 pp. 95-118
ISSN:: 1542-7528
Subject:: backcrossing; heterosis; Glycine max; androecium; hybrids; cultivars; genetic improvement; soybeans; plant fertility; agronomic traits; crop yield; progeny testing; genetic variation; insect pollination; cross pollination; Indiana; Iowa
Abstract:: ... Male-sterility systems combined with insect-mediated cross-pollination in soybean [Glycine max (L.) Merr.] have been shown to produce large quantities of hybrid seed, which can be useful for studying heterosis and agronomic performance in different population types. The procedure was used to obtain large quantities of hybrid seed for replicated yield trials. The objective of our study was to evalu ...
Handle:: 10113/31398
DOI:: 10.1080/15427520802671677
: https://doi.org/10.1080/15427520802671677

75. Development of submergence-tolerant rice cultivars: the Sub1 locus and beyond

Author:: Septiningsih, Endang M.; Pamplona, Alvaro M.; Sanchez, Darlene L.; Neeraja, Chirravuri N.; Vergara, Georgina V.; Heuer, Sigrid; Ismail, Abdelbagi M.; Mackill, David J.
Source:: Annals of botany 2009 v.103 no.2 pp. 151-160
ISSN:: 0305-7364
Subject:: backcrossing; cultivars; rice; hybrids; alleles; loci; phenotype; submergence; survival rate; parents; genetic background; heterozygosity; agronomic traits; gene expression; multigene family; lowlands; introgression
Abstract:: ... BACKGROUND AND AIMS: Submergence is a recurring problem in the rice-producing rainfed lowlands of south and south-east Asia. Developing rice cultivars with tolerance of submergence and with agronomic and quality traits acceptable to farmers is a feasible approach to address this problem. The objectives of this study were to (a) develop mega varieties with Sub1 introgression that are submergence to ...
DOI:: 10.1093/aob/mcn206
PubMed:: 18974101
PubMed Central:: PMC2707316
: https://doi.org/10.1093/aob/mcn206

76. Ecological selection maintains cytonuclear incompatibilities in hybridizing sunflowers

Author:: Sambatti, Julianno B.M.; Ortiz-Barrientos, Daniel; Baack, Eric J.; Rieseberg, Loren H.
Source:: Ecology letters 2008 v.11 no.10 pp. 1082-1091
ISSN:: 1461-023X
Subject:: Helianthus annuus; Helianthus petiolaris; backcrossing; evolution; genome; genotype; growing season; habitats; hybrids; reproductive isolation; survival rate
Abstract:: ... Despite the recent renaissance in studies of ecological speciation, the connection between ecological selection and the evolution of reproductive isolation remains tenuous. We tested whether habitat adaptation of cytoplasmic genomes contributes to the maintenance of reproductive barriers in hybridizing sunflower species, Helianthus annuus and Helianthus petiolaris. We transplanted genotypes of the ...
DOI:: 10.1111/j.1461-0248.2008.01224.x
PubMed:: 18643842
PubMed Central:: PMC2737365
: https://doi.org/10.1111/j.1461-0248.2008.01224.x

77. Fine-scale mapping of recombination rate in Drosophila refines its correlation to diversity and divergence

Author:: Kulathinal, Rob J.; Bennett, Sarah M.; Fitzpatrick, Courtney L.; Noor, Mohamed A.F.
Source:: Proceedings of the National Academy of Sciences of the United States of America 2008 v.105 no.29 pp. 10051-10056
ISSN:: 0027-8424
Subject:: backcrossing; hybrids; Drosophila pseudoobscura; loci; crossing over; chromosome mapping; nucleotide sequences; genetic markers
Abstract:: ... Regional rates of recombination often correlate with levels of nucleotide diversity, and either selective or neutral hypotheses can explain this relationship. Regional recombination rates also correlate with nucleotide differences between human and chimpanzee, consistent with models where recombination is mutagenic; however, a lack of correlation is observed in the Drosophila melanogaster group, c ...
DOI:: 10.1073/pnas.0801848105
PubMed:: 18621713
PubMed Central:: PMC2481358
: https://doi.org/10.1073/pnas.0801848105

78. Utilization of a Rapid DNA-Based Assay for Molecular Verification of Channel Catfish, Blue Catfish, F1 Hybrid, and F2 Backcross Offspring at all Life Stages

Author:: Geoffrey C. Waldbieser; Brian S. Bosworth
Source:: North American Journal of Aquaculture 2008 v.70 no. pp. 388-395
ISSN:: 1522-2055
Subject:: DNA; Ictalurus furcatus; Ictalurus punctatus; adults; agarose; antimicrobial proteins; backcrossing; blood; catfish; cytochrome-c oxidase; electrophoresis; females; fillets; follistatin; genes; hatching; hybrids; juveniles; males; molecular systematics; parents; polymerase chain reaction; product authenticity; progeny
Abstract:: ... The F1 hybrid offspring of channel catfish, Ictalurus punctatus, females mated with blue catfish, I. furcatus, males contain many desirable traits for commercial production such as enhanced growth and increased survivability. Although at a low efficiency, hybrids can be produced by pond spawning, but hybrid catfish cannot always be readily distinguished from channel catfish, especially at early li ...
Handle:: 10113/55539
DOI:: 10.1577/A07-076.1
: https://doi.org/10.1577/A07-076.1

79. Comparative Mapping of Growth Habit, Plant Height, and Flowering QTLs in Two Interspecific Families of Leymus

Author:: Steven R. Larson; Xiaolei Wu; Thomas A. Jones; Kevin B. Jensen; N. Jerry Chatterton; Blair L. Waldron; Joseph G. Robins; B. Shaun Bushman; Antonio J. Palazzo
Source:: Crop science 2006 v.46 no.6 pp. 2526-2539
ISSN:: 0011-183X
Subject:: inflorescences; flowering; alleles; gene interaction; height; Leymus triticoides; rhizomes; quantitative trait loci; interspecific variation; backcrossing; hybrids; linkage groups; phenology; interspecific hybridization; grasses; diameter; chromosome mapping; transgressive segregation; Leymus cinereus; genetic variation
Abstract:: ... Leymus cinereus (Scribn. & Merr.) Á. Löve and L. triticoides (Buckley) Pilg. are tall caespitose and short rhizomatous perennial Triticeae grasses, respectively. Circumference of rhizome spreading, proportion of bolting culms, anthesis date, and plant height were evaluated in two mapping families derived from two interspecific hybrids of L. cinereus Acc:636 and L. triticoides Acc:641 accessions, b ...
Handle:: 10113/7420
DOI:: 10.2135/cropsci2005.12.0472
: https://doi.org/10.2135/cropsci2005.12.0472

80. Cytogenetic and Molecular Characterization of Hybrids between 6x, 4x, and 2x Ploidy Levels in Crested Wheatgrass

Author:: Kevin B. Jensen; Steven R. Larson; Blair L. Waldron; Kay H. Asay
Source:: Crop science 2006 v.46 no.1 pp. 105-112
ISSN:: 0011-183X
Subject:: Agropyron cristatum; hybrids; polyploidy; hybridization; cytogenetic analysis; color; leaves; chromosome pairing; chromosome number; plant morphology; backcrossing; aneuploidy
Abstract:: ... The crested wheatgrass cultivar ‘Hycrest,’ which consists of germplasm from an induced tetraploid of Agropuron cristatum (2n = 4x = 28) (L.) Gaertn. and a natural tetraploid (2n = 4x = 28) of A. desertorum (Fisch. Ex Link) Schultes, was hybridized with a promising broadleaf hexaploid (6x-BL; 2n = 6x = 42) accession of A. cristatum from the USSR. The goal was to combine the wide leaf characteristic ...
Handle:: 10113/3526
DOI:: 10.2135/cropsci2005.0148
: https://doi.org/10.2135/cropsci2005.0148

81. Experimental evidence for interspecific directional selection on moth pheromone communication

Author:: Groot, A.T.; Horovitz, J.L.; Hamilton, J.; Santangelo, R.G.; Schal, C.; Gould, F.
Source:: Proceedings of the National Academy of Sciences of the United States of America 2006 v.103 no.15 pp. 5858-5863
ISSN:: 0027-8424
Subject:: Heliothis subflexa; Heliothis virescens; sex pheromones; insect communication; males; females; mating behavior; interspecific hybridization; hybrids; viability; natural selection; backcrossing; quantitative trait loci
Abstract:: ... The chemical composition of the sexual communication signals of female moths is thought to be under strong stabilizing selection, because females that produce atypical pheromone blends suffer lower success in finding mates. This intraspecific selection pressure cannot explain the high diversity of moth pheromone blends found in nature. We conducted experiments to determine whether communication in ...
DOI:: 10.1073/pnas.0508609103
PubMed:: 16585529
PubMed Central:: PMC1458663
: https://doi.org/10.1073/pnas.0508609103

82. Genetic Architecture of Leaf Ecophysiological Traits in Helianthus

Author:: Brouillette, Larry C.; Rosenthal, David M.; Rieseberg, Loren H.; Lexer, Christian; Malmberg, Russell L.; Donovan, Lisa A.
Source:: Journal of heredity 2007 v.98 no.2 pp. 142-146
ISSN:: 0022-1503
Subject:: Helianthus annuus; Helianthus petiolaris; backcrossing; carbon; chromosome mapping; diploidy; dunes; ecophysiology; greenhouse experimentation; habitats; hybrids; isotopes; leaves; loci; nitrogen; nitrogen content; nutrient use efficiency; quantitative trait loci
Abstract:: ... We investigated quantitative trait loci (QTLs) for several leaf chemistry traits in early-generation hybrids between Helianthus annuus and Helianthus petiolaris, the parental species of the ancient diploid hybrid sunflower species Helianthus anomalus, Helianthus deserticola, and Helianthus paradoxus. We grew individuals of a second-generation backcross (BC₂) toward H. petiolaris under optimum cond ...
DOI:: 10.1093/jhered/esl063
PubMed:: 17208933
PubMed Central:: PMC2442921
: https://doi.org/10.1093/jhered/esl063

83. Recent Natural Hybridization between Two Allopolyploid Wheatgrasses (Elytrigia, Poaceae): Ecological and Evolutionary Implications

Author:: Mahelka, Václav; Fehrer, Judith; Krahulec, František; Jarolímová, Vlasta
Source:: Annals of botany 2007 v.100 no.2 pp. 249-260
ISSN:: 0305-7364
Subject:: Elymus repens subsp. repens; Elytrigia; allopolyploidy; anthropogenic activities; backcrossing; chloroplast DNA; chromosome number; cytotypes; evolution; flow cytometry; gene flow; genetic markers; genome; habitats; hexaploidy; hybridization; hybrids; parents; progeny
Abstract:: ... BACKGROUND AND AIMS: Natural hybridization was investigated between two predominantly allohexaploid wheatgrasses, weedy Elytrigia repens and steppic E. intermedia, with respect to habitats characterized by different degrees of anthropogenic disturbance. METHODS: Using flow cytometry (relative DNA content), 269 plants from three localities were analysed. Hybrids were further analysed using nuclear ...
DOI:: 10.1093/aob/mcm093
PubMed:: 17562679
PubMed Central:: PMC2735307
: https://doi.org/10.1093/aob/mcm093

84. The genetic architecture of reproductive isolation in Louisiana irises: flowering phenology

Author:: Martin, N.H.; Bouck, A.C.; Arnold, M.L.
Source:: Genetics 2007 v.175 no.4 pp. 1803-1812
ISSN:: 0016-6731
Subject:: Iris (Iridaceae); quantitative trait loci; flowering; phenology; hybrids; interspecific hybridization; reproductive isolation; backcrossing; introgression; alleles; Louisiana
DOI:: 10.1534/genetics.106.068338
PubMed:: 17237511
PubMed Central:: PMC1855133
: https://doi.org/10.1534/genetics.106.068338

85. A recessive gene for resistance to Meloidogyne arenaria in interspecific Arachis spp. hybrids

Author:: Church, G.T.; Starr, J.L.; Simpson, C.E.
Source:: Journal of nematology 2005 v.37 no.2 pp. 178-184
ISSN:: 0022-300X
Subject:: Meloidogyne arenaria; root-knot nematodes; Arachis hypogaea; peanuts; interspecific hybridization; hybrids; backcrossing; inheritance (genetics); recessive genes; genetic resistance
Abstract:: ... A single dominant gene for resistance to Meloidogyne arenaria was identified previously in two peanut cultivars, Arachis hypogaea 'COAN' and 'NemaTAM'. The interspecific Arachis hybrid TxAG-6 was the source of this resistance and the donor parent in a backcross breeding program to introgress resistance into cultivated peanut. To determine if other resistance genes were present in TxAG-6 and derive ...
Handle:: 10113/18921
PubMed:: 19262858
PubMed Central:: PMC2620960

86. Fitness estimation through performance comparison of F1 hybrids with their parental species Oryza rufipogon and O. sativa

Author:: Song, Z.P.; Lu, B.R.; Wang, B.; Chen, J.K.
Source:: Annals of botany 2004 v.93 no.3 pp. 311-316
ISSN:: 0305-7364
Subject:: Oryza sativa; Oryza rufipogon; interspecific hybridization; introgression; hybrids; gene flow; seed germination; seedlings; mortality; leaf area; tillering; inflorescences; pollen germination; self-pollination; seed set; backcrossing; heterosis; natural selection; China
Abstract:: ... Background and Aims: Introgression of crop genes into populations of wild relatives has important implications for germplasm conservation as well as for the persistence of novel transgenes in wild populations. Studies of hybrid fitness can be used to evaluate the potential for introgression to occur following episodes of interspecific hybridization. Methods: This study estimated relative fitness o ...
DOI:: 10.1093/aob/mch036
PubMed:: 14724120
PubMed Central:: PMC4242197
: https://doi.org/10.1093/aob/mch036

87. Registration of 17 upland (Gossypium hirsutum) cotton germplasm lines disomic for different G. barbadense chromosome or arm substitutions

Author:: Stelly, D.M.; Saha, S.; Raska, D.A.; Jenkins, J.N.; McCarty, J.C. Jr.; Gutierrez, O.A.
Source:: Crop science 2005 v.45 no.6 pp. 2663-2665
ISSN:: 0011-183X
Subject:: cotton; germplasm releases; substitution lines; hybrids; backcrossing; Gossypium hirsutum; Gossypium barbadense; fiber crops; agronomic traits; plant genetic resources; inbred lines; interspecific hybridization; introgression; Texas; Mississippi
Abstract:: ... Seventeen germplasm lines (Reg. no. GP-836 through GP-852, PI 636346 to PI 636362) were each developed by hypoaneuploid-based backcross substitution of a different Gossypium barbadense chromosome or chromosome segment into a Gossypium hirsutum genetic background by the Texas Agricultural Experiment Station, the USDA-ARS and the Mississippi Agricultural and Forestry Experiment Station, and released ...
Handle:: 10113/35491
DOI:: 10.2135/cropsci2004.0642
: https://doi.org/10.2135/cropsci2004.0642

88. Inheritance of venation pattern in Prunus ferganensis x persica hybrids

Author:: Okie, W.R.; Rieger, M.
Source:: Acta horticulturae 2003 no.622 pp. 261-264
ISSN:: 0567-7572
Subject:: backcrossing; hybrids; peaches; plant veins; Prunus persica; inheritance (genetics)
Abstract:: ... Prunus ferganensis (Kost. & Riab) Kov. & Kost, is closely related to cultivated peach, P. persica (L.) Batsch, but is distinguished by very long, unbranched leaf veins which turn and run parallel to the leaf margin at the edge of the leaf. Also, the pits have longitudinal grooves. Otherwise the tree and fruit of this species (or sub-species) resemble those of our familiar commercial peach. P. ferg ...
Handle:: 10113/46993

89. Family and genetic group effects for resistance to proliferative gill disease in channel catfish, blue catfish and channel catfish x blue catfish backcross hybrids

Author:: Bosworth, B.G.; Wise, D.J.; Terhune, J.S.; Wolters, W.R.
Source:: Aquaculture research 2003 v.34 no.7 pp. 569-573
ISSN:: 1355-557X
Subject:: Ictalurus punctatus; catfish; freshwater fish; backcrossing; hybrids; genetic variation; disease resistance; fish diseases; protozoal infections; fish culture; freshwater aquaculture; gills; mortality; Ictalurus furcatus
Abstract:: ... The severity of gill damage (percentage of gill lamellae with lytic lesions) was determined in juveniles from 10 USDA 103 line channel catfish Ictalurus punctatus full-sib families, 10 channel catfish x blue catfish I. furcatus backcross hybrid (7/8 channel catfish, 1/8 blue catfish) full-sib families and a mixed-family group of blue catfish placed in a commercial catfish pond experiencing prolife ...
Handle:: 10113/48449
DOI:: 10.1046/j.1365-2109.2003.00850.x
: https://doi.org/10.1046/j.1365-2109.2003.00850.x

90. Mapping quantitative trait loci controlling early growth in a (longleaf pine x slash pine) x slash pine BC1 family

Author:: Weng, C.; Kubisiak, T.L.; Nelson, C.D.; Stine, M.
Source:: Theoretical and applied genetics 2002 v.104 no.5 pp. 852-859
ISSN:: 0040-5752
Subject:: height; plant characteristics; Pinus palustris; Pinus elliottii; interspecific hybridization; hybrids; quantitative traits; loci; chromosome mapping; linkage groups; phenotypic variation; backcrossing; random amplified polymorphic DNA technique
Abstract:: ... Random amplified polymorphic DNA (RAPD) markers were employed to map the genome and quantitative trait loci controlling the early growth of a pine hybrid F1 tree (Pinus palustris Mill. x P. elliottii Engl.) and a recurrent slash pine tree (P. elliottii Engl.) in a (longleaf pine x slash pine) x slash pine BC1 family consisting of 258 progeny. Of the 150 hybrid F1 parent-specific RAPD markers, 133 ...
Handle:: 10113/13876

91. Verification and establishment of Hydrangea macrophylla 'Kardinal' x H. paniculata 'Brussels Lace' interspecific hybrids

Author:: Reed, S.M.; Riedel, G.L.; Pooler, M.R.
Source:: Journal of environmental horticulture 2001 v.19 no.2 pp. 85-88
ISSN:: 0738-2898
Subject:: height; genetic markers; backcrossing; hybrids; length; interspecific hybridization; shape; leaves; Hydrangea macrophylla; random amplified polymorphic DNA technique; leaf area; rooting; Hydrangea paniculata; mortality; ovule culture; plant breeding; internodes; flowers; cold tolerance
Abstract:: ... An interspecific hydrangea breeding project with the goal of producing cold-hardy hydrangeas with brightly coloured flowers was initiated in 1997. The objective of the current study was to transfer Hydrangea macrophylla × H. paniculata plants obtained using ovule culture to in vivo conditions and to verify their hybrid nature. Putative hybrids, representing five H. macrophylla × H. paniculata cult ...
Handle:: 10113/41517

92. Cytoplasmic Male Sterility in Two Wild Helianthus annuus L. Accessions and Their Fertility Restoration

Author:: C.C. Jan
Source:: Crop science 2000 v.40 no.6 pp. 1535-1538
ISSN:: 0011-183X
Subject:: Helianthus annuus; cytoplasmic male sterility; fecundity; hybrids; Helianthus petiolaris; wild relatives; backcrossing; inbred lines; heterozygosity; genes; pollination; cytoplasm; seed set; inheritance (genetics); selfing; Minnesota
Abstract:: ... Commercial sunflower hybrids have been produced by means of a single male-sterile Helianthus petiolaris Nutt. cytoplasm and a few fertility restoration genes. The objectives of this study were to characterize cytoplasmic male-sterility (cms) systems in wild H. annuus L. accessions (PI 413178 and PI 413180) and to determine the inheritance of fertility restoration. Male-sterile plants were identifi ...
Handle:: 10113/39538
DOI:: 10.2135/cropsci2000.4061535x
: https://doi.org/10.2135/cropsci2000.4061535x

93. Evaluation of ultrasound imagery and body shape to predict carcass and fillet yield in farm-raised catfish

Author:: Bosworth, B.G.; Holland, M.; Brazil, B.L.
Source:: Journal of animal science 2001 v.79 no.6 pp. 1483-1490
ISSN:: 0021-8812
Subject:: fish farms; carcass yield; fish products; prediction; genetic improvement; gender differences; hybrids; mathematical models; backcrossing; shape
Abstract:: ... Accurate prediction of meat yield in live animals may allow more efficient genetic improvement of meat yield in farm-raised catfish. An initial trial with 30 channel catfish demonstrated significant correlations among weight-adjusted residuals for muscle area measured from transverse ultrasound images and transverse sections at five locations along the trunk musculature (r = 0.30 to 0.70). Relatio ...
Handle:: 10113/21920
PubMed:: 11424685

94. Cytological characterization of potato - Solanum etuberosum somatic hybrids and their backcross progenies by genomic in situ hybridization

Author:: Dong, F.; Novy, R.G.; Helgeson, J.P.; Jiang, J.
Source:: Genome = 1999 v.42 no.5 pp. 987-992
ISSN:: 0831-2796
Subject:: germplasm; backcrossing; hybrids; somatic hybridization; Solanum etuberosum; chromosomes; chromosome number; Solanum tuberosum; chromosome pairing; chromosome segregation; genomics; nucleic acid hybridization; genetic markers
Abstract:: ... Four somatic hybrids derived from a diploid wild species Solanum etuberosum and a diploid tuber-bearing Solanum clone 463-4, together with five BC(1) and three BC(2) plants, were analyzed by genomic in situ hybridization (GISH). None of the four somatic hybrids had the expected chromosome constitutions, i.e., 24 chromosomes from each fusion parent. Either one chromosome from S. etuberosum or one f ...
Handle:: 10113/48430
DOI:: 10.1139/g99-037
: https://doi.org/10.1139/g99-037

95. Analysis of hybrids of durum wheat with Thinopyrum junceiforme using RAPD markers

Author:: Bommineni, V.R.; Jauhar, P.P.; Peterson, T.S.; Chibbar, R.N.; Almouslem, A.B.
Source:: Theoretical and applied genetics 1997 v.95 no.5/6 pp. 757-763
ISSN:: 0040-5752
Subject:: Triticum turgidum; Southern blotting; Elytrigia; cultivars; hybrids; restriction fragment length polymorphism; intergeneric hybridization; random amplified polymorphic DNA technique; backcrossing; Thinopyrum pycnanthum; DNA primers; Leymus; DNA; genomics; Elymus; Thinopyrum elongatum; Thinopyrum bessarabicum; genetic markers
Abstract:: ... The objective of this study was to detect the presence of alien chromatin in intergeneric hybrids of durum wheat (Triticum turgidum, 2n = 4x = 28; AABB genomes) with the perennial grass Thinopyrum junceiforme (2n = 4x = 28; J1J1J2J2) using RAPD markers. The first step was to identify amplification of species-specific DNA markers in the parental grass species and durum wheat cultivars. Initially, t ...
Handle:: 10113/16398
DOI:: 10.1007/s001220050622
: https://doi.org/10.1007/s001220050622

96. Endosperm balance number manipulation for direct in vivo germplasm introgression to potato from a sexually isolated relative (Solanum commersonii Dun.)

Author:: Carputo, D.; Barone, A.; Cardi, T.; Sebastiano, A.; Frusciante, L.; Peloquin, S.J.
Source:: Proceedings of the National Academy of Sciences of the United States of America 1997 v.94 no.22 pp. 12013-12017
ISSN:: 0027-8424
Subject:: germplasm; backcrossing; random amplified polymorphic DNA technique; plant breeding; hybrids; Solanum commersonii; chromosome number; triploidy; Solanum tuberosum; tetraploidy; fruit set; interspecific hybridization; seed set; genetic markers; introgression
Abstract:: ... Diploid (2n = 2x = 24) Solanum species with endosperm balance number (EBN) = 1 are sexually isolated from diploid 2EBN species and both tetraploid (2n = 4x = 48, 4EBN) and haploid (2n = 2x = 24, 2EBN) S. tuberosum Group Tuberosum. To sexually overcome these crossing barriers in the diploid species S. commersonii (1EBN), the manipulation of the EBN was accomplished by scaling up and down ploidy lev ...
DOI:: 10.1073/pnas.94.22.12013
PubMed:: 11038589
PubMed Central:: PMC23688
: https://doi.org/10.1073/pnas.94.22.12013

97. Production of pheromone by hairpencil glands of males obtained from interspecific hybridization between Heliothis virescens and H. subflexa (Lepidoptera: Noctuidae)

Author:: Teal, P.E.A.; Oostendorp, A.
Source:: Journal of chemical ecology 1995 v.21 no.1 pp. 59-67
ISSN:: 0098-0331
Subject:: Heliothis virescens; Heliothis subflexa; hybrids; interspecific hybridization; backcrossing; sex pheromones; biological production; genes; phenotype; animal glands; males
Abstract:: ... Pheromone produced by the hairpencil glands of interspecific hybrid- and backcross-generation males from crosses between Heliothis virescens (F.) with H. subflexa (Gn.) was studied. Males of reciprocal F1 hybrids, all of which had hairpencil glands morphologically similar to those of H. virescens, produced neither the same pheromone blend nor amounts of pheromone that were produced by males of H. ...
Handle:: 10113/23123
DOI:: 10.1007/BF02033662
PubMed:: 24233567
: https://doi.org/10.1007/BF02033662

98. Interspecific hybrids from cross incompatible relatives of sweetpotato

Author:: Kobayashi, R.S.; Bouwkamp, J.C.; Sinden, S.L.
Source:: Euphytica 1994 v.80 no.3 pp. 159-164
ISSN:: 0014-2336
Subject:: corolla; pollen; calyx; backcrossing; hybrids; nectaries; Ipomoea batatas; interspecific hybridization; wild relatives; peroxidase; seeds; Ipomoea lacunosa; progeny; isozymes; ovule culture; viability; plant breeding; color; esterases
Abstract:: ... Hybrids were obtained from Ipomoea interspecific crosses through ovule culture. The hybridity of the progeny obtained from I. triloba x IitI. trifida and (I. triloba x I. lacunosa) x I. batatas (4x) crosses was established by comparisons of floral morphology and analyses of peroxidase and esterase isozymes. The hybrids displayed the inflorescence type and sepal shape and texture of their male pare ...
Handle:: 10113/19255
DOI:: 10.1007/BF00039646
: https://doi.org/10.1007/BF00039646

99. A Genetic and Breeding Study of Pink Bollworm Resistance and Agronomic Properties in Cotton

Author:: F. D. Wilson; B. W. George
Source:: Crop science 1983 v.23 no.1 pp. 1-4
ISSN:: 0011-183X
Subject:: Gossypium hirsutum; Pectinophora gossypiella; additive effect; agronomic traits; analysis of variance; backcrossing; breeding stock; epistasis; genes; genotype-environment interaction; heritability; hybrids; inheritance (genetics); lint cotton; nectaries; parents; pest resistance; phenotype; plant damage; prediction; seeds
Abstract:: ... A breeding stock of upland cotton (Gossypium hirsutum L.) designated as AET-5, consistently sustains less seed damage by pink bollworm(PBW)[Pectinophora gossypiella (Saunders)] than do cultivars.This stock is deficient in most agronomic and fiber properties, with the exception of lint percentage. Wec rossed AET-5 to DES 24-8ne, an advanced breedingl line which lacks extrafloral nectaries [nectaril ...
Handle:: 10113/54670
DOI:: 10.2135/cropsci1983.0011183X002300010001x
: https://doi.org/10.2135/cropsci1983.0011183X002300010001x

100. Sex pheromone specificity in Heliothis

Author:: Tingle, F.C.; Mitchell, E.R.; Baumhover, A.H.
Source:: Journal of chemical ecology 1978 v.4 no.4 pp. 471-479
ISSN:: 0098-0331
Subject:: Heliothis subflexa; Heliothis virescens; Helicoverpa zea; sex pheromones; sex attractants; trapping; pheromone traps; backcrossing; hybrids; mating behavior; olfactometry; wind tunnels; nocturnal activity
Abstract:: ... Electric grid traps baited with Heliothis subflexa (Guenée), H. virescens (F.), or H. zea (Boddie) females captured conspecific males with few exceptions.Heliothis subflexa females reduced the attraction ofH. virescens and H. zea males when used as bait simultaneously with females of either of these two species. Backcrosses were made with H. virescens males and female hybrids from a cross between ...
Handle:: 10113/23301
DOI:: 10.1007/BF00989503
: https://doi.org/10.1007/BF00989503

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1. Laboratory Hybridization Between the Green Lacewings Chrysoperla comanche (Neuroptera: Chrysopidae) and Chrysoperla rufilabris, Predators of the Asian Citrus Psyllid

2. Rapid identification of homozygosity and site of wild relative introgressions in wheat through chromosome‐specific KASP genotyping assays

3. Conservation implications of asymmetric introgression and reproductive barriers in a rare primrose species

4. Dominance effects strengthen premating hybridization barriers between sympatric species of grasshoppers (Acrididae, Orthoptera)

5. Improving rice blast resistance of Feng39S through molecular marker-assisted backcrossing

6. Molecular Characterisation of a Supergene Conditioning Super-High Vitamin C in Kiwifruit Hybrids

7. Accelerated molecular breeding of a novel P/TGMS line with broad-spectrum resistance to rice blast and bacterial blight in two-line hybrid rice

8. Development and evaluation of improved lines with broad-spectrum resistance to rice blast using nine resistance genes

9. Genetic analysis of male sterility obtained from a rice cultivar Lebed backcrossed with Taichung 65

10. Genome-wide association analysis of intra-specific QTL associated with the resistance for enteric septicemia of catfish

11. Identification of novel genes significantly affecting growth in catfish through GWAS analysis

12. Plantation performance of chestnut hybrids and progenitors on reclaimed Appalachian surface mines

13. Population structure, genetic diversity and downy mildew resistance among Ocimum species germplasm

14. Combination of Acylglucose QTL reveals additive and epistatic genetic interactions and impacts insect oviposition and virus infection

15. Genetic effects and genotype × environment interactions govern seed oil content in Brassica napus L.

16. Heterotic affinity and combining ability of exotic maize inbred lines for resistance to aflatoxin accumulation

17. Marker assisted pyramiding of Bph6 and Bph9 into elite restorer line 93–11 and development of functional marker for Bph9

18. Marker-assisted breeding for introgression of opaque-2 allele into elite maize inbred line BML-7

19. QTL mapping with different genetic systems for nine non-essential amino acids of cottonseeds

20. Quantitative trait locus analysis of heterosis for plant height and ear height in an elite maize hybrid zhengdan 958 by design III

21. RAD-seq reveals genetic structure of the F2-generation of natural willow hybrids (Salix L.) and a great potential for interspecific introgression

22. RNA‐guided Cas9 as an in vivo desired‐target mutator in maize

23. Untangling the reticulate history of species complexes and horticultural breeds in Abelia (Caprifoliaceae)

24. A step change in the transfer of interspecific variation into wheat from Amblyopyrum muticum

25. Development of Cytoplasmic Male Sterile IR24 and IR64 Using CW-CMS/Rf17 System

26. Dissecting combining ability effect in a rice NCII-III population provides insights into heterosis in indica-japonica cross

27. Expressional divergences of two desaturase genes determine the opposite ratios of two sex pheromone components in Helicoverpa armigera and Helicoverpa assulta

28. High‐density interspecific genetic linkage mapping provides insights into genomic incompatibility between channel catfish and blue catfish

29. Molecular Breeding of Rice Restorer Lines and Hybrids for Brown Planthopper (BPH) Resistance Using the Bph14 and Bph15 Genes

30. Polyploidy and interspecific hybridization: partners for adaptation, speciation and evolution in plants

31. A genome‐wide association study of heat stress‐associated SNPs in catfish

32. Diagnostic single nucleotide polymorphism markers to identify hybridization between dromedary and Bactrian camels

33. Identification of maize-derived dominant gametophyte factors

34. Marker-assisted breeding of the rice restorer line Wanhui 6725 for disease resistance, submergence tolerance and aromatic fragrance

35. Overcoming sterility and unilateral incompatibility of Solanum lycopersicum × S. sitiens hybrids

36. Phylogenetic origin of limes and lemons revealed by cytoplasmic and nuclear markers

37. Population genetic analysis of Anisakis simplex s.l. and Anisakis pegreffii (Nematoda, Anisakidae) from parapatric areas and their contact zone

38. Rooting depth and root depth distribution of Trifolium repens × T. uniflorum interspecific hybrids

39. Evidence to support natural hybridization between Anopheles sinensis and Anopheles kleini (Diptera: Culicidae): possibly a significant mechanism for gene introgression in sympatric populations

40. High-resolution mapping and characterization of qRgls2, a major quantitative trait locus involved in maize resistance to gray leaf spot

41. Hybrid sterility in crosses between two Brazilian sibling species of the Anopheles albitarsis complex

42. Maintenance of strong morphological differentiation despite ongoing natural hybridization between sympatric species of Lomatia (Proteaceae)

43. Natural hybridization and asymmetric introgression at the distribution margin of two Buddleja species with a large overlap

44. No evidence for assortative mating within a willow warbler migratory divide

45. Optimized breeding strategies for multiple trait integration: III. Parameters for success in version testing

46. UVB-induced gene expression in the skin of Xiphophorus maculatus Jp 163 B

47. Unidirectional hybridization and reproductive barriers between two heterostylous primrose species in north-west Yunnan, China

48. What haplodiploids can teach us about hybridization and speciation

49. A genetic map of Peromyscus with chromosomal assignment of linkage groups (a Peromyscus genetic map)

50. Contemporary gene flow between wild An. gambiae s.s. and An. arabiensis

51. Estimation of linkage disequilibrium and interspecific gene flow in Ficedula flycatchers by a newly developed 50k single‐nucleotide polymorphism array

52. Genetic diversity in morphological characters and phenolic acids content resulting from an interspecific cross between eggplant (Solanum melongena) and its wild ancestor (S. incanum)

53. Marker-assisted breeding of Indonesia local rice variety Siputeh for semi-dwarf phonetype, good grain quality and disease resistance to bacterial blight

54. Mating compatibility in the parasitic protist Trypanosoma brucei

55. Optimized breeding strategies for multiple trait integration: I. Minimizing linkage drag in single event introgression

56. Optimized breeding strategies for multiple trait integration: II. Process efficiency in event pyramiding and trait fixation

57. Transcriptional Dynamics of LTR Retrotransposons in Early Generation and Ancient Sunflower Hybrids

58. Fusion of two divergent fungal individuals led to the recent emergence of a unique widespread pathogen species

59. Hybridization and introgression between the exotic Siberian elm, Ulmus pumila, and the native Field elm, U. minor, in Italy

60. Hybridization barriers between diploid Solanum tuberosum and wild Solanum raphanifolium.

61. Population genomics reveals a possible history of backcrossing and recombination in the gynogenetic fish Poecilia formosa

62. Routine mapping of Fusarium wilt resistance in BC1 populations of Arabidopsis thaliana

63. Transfer of auxinic herbicide resistance from Brassica kaber to Brassica juncea and Brassica rapa through embryo rescue

64. Characterization of interspecific hybrids and backcross generations from crosses between two cultivated eggplants (Solanum melongena and S. aethiopicum Kumba group)and implications for eggplant breeding

65. Flow cytometry confirms reticulate evolution and reveals triploidy in Central European Diphasiastrum taxa (Lycopodiaceae, Lycophyta)

66. Proteomic analyses of the Xiphophorus Gordon–Kosswig melanoma model

67. Eco-geographically divergent diploids, Caucasian clover (Trifolium ambiguum) and western clover (T. occidentale), retain most requirements for hybridization

68. Species by Environment Interactions Affect Pyrrolizidine Alkaloid Expression in Senecio jacobaea, Senecio aquaticus, and Their Hybrids

69. Ultraviolet A does not induce melanomas in a Xiphophorus hybrid fish model

70. Did backcrossing contribute to the origin of hybrid edible bananas?