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1. Diversification of maize (Zea mays L.) through teosinte (Zea mays subsp. parviglumis Iltis & Doebley) allelic

Author:
Sneha Adhikari; Anjali Joshi; Amarjeet Kumar; Narendra Kumar Singh
Source:
Genetic resources and crop evolution 2021 v.68 no.7 pp. 2983-2995
ISSN:
0925-9864
Subject:
Zea mays; backcrossing; complementary genes; corn; domestication; duplicate genes; ears; evolution; flowering; gene interaction; genetic variation; germplasm; homozygosity; humans; pollen; protogyny; rivers; selfing; Mexico
Abstract:
... Zea mays ssp. parviglumis is the progenitor of maize and assume to have tolerance against various biotic and abiotic stresses. It grows without human intervention in Southern Mexico at the bank of Balsas river and maintains sufficient genetic diversity that can help in maize diversification and domestication of wild alleles. To develop the uniform near to homozygous line the maize inbred parent DI ...
DOI:
10.1007/s10722-021-01170-z

2. Interspecific hybridization between sponge gourd (Luffa cylindrica L.) and ‘Satputia’ (Luffa hermaphrodita Singh & Bhandari) for pre-introgression of cluster bearing, high yield and gynoecism

Author:
Mohinder Kaur Sidhu; Jasmeen Kaur
Source:
Journal of genetics 2021 v.100 no.2 pp. 73
ISSN:
0022-1333
Subject:
Luffa aegyptiaca; backcrossing; flowering; flowers; fruit set; fruit size; fruits; hybrids; interspecific hybridization; introgression; monoecy; pollen; pollen productivity; pollen size; pollen viability; self-pollination; selfing; vines
Abstract:
... Interspecific hybridization with ‘Satputia’ (bisexual and cluster bearing) can be highly useful for the introgression of cluster bearing, high yield and gynoecism in sponge gourd (monoecious and solitary bearing). However, the occurrence of self-pollination in closed flowers and anthesis of two species at different time intervals creates hindrance in interspecific hybridization. The present invest ...
DOI:
10.1007/s12041-021-01323-0

3. The cellulose synthase (CesA) gene family in four Gossypium species: phylogenetics, sequence variation and gene expression in relation to fiber quality in Upland cotton

Author:
Sujun Zhang; Zhenxing Jiang; Jie Chen; Zongfu Han; Jina Chi; Xihua Li; Jiwen Yu; Chaozhu Xing; Mingzhou Song; Jianyong Wu; Feng Liu; Xiangyun Zhang; Jinfa Zhang; Jianhong Zhang
Source:
Molecular genetics and genomics 2021 v.296 no.2 pp. 355-368
ISSN:
1617-4615
Subject:
Gossypium arboreum; Gossypium barbadense; Gossypium hirsutum; Gossypium raimondii; amino acids; backcrossing; cellulose; cellulose synthase; diploidy; exons; fiber quality; flowering; gene expression; genomics; introns; lint cotton; phylogeny; plasma membrane; quantitative traits; sequence diversity; tetraploidy
Abstract:
... Cellulose synthases (CesAs) are multi-subunit enzymes found on the plasma membrane of plant cells and play a pivotal role in cellulose production. The cotton fiber is mainly composed of cellulose, and the genetic relationships between CesA genes and cotton fiber yield and quality are not fully understood. Through a phylogenetic analysis, the CesA gene family in diploid Gossypium arboreum and Gossy ...
DOI:
10.1007/s00438-020-01758-7

4. Developing Triploid Maples

Author:
Ryan N. Contreras; Tyler C. Hoskins
Source:
Horticulturae 2020 v.6 no.4 pp. -
ISSN:
2311-7524
Subject:
Acer buergerianum; Acer platanoides; Acer tataricum subsp. ginnala; backcrossing; cotyledons; cultivars; diploidy; flora; flowering; growers; land; leaves; managers; mortality; open pollination; ornamental value; pests; pollinators; seedlings; shade trees; temperate zones; tetraploidy; triploidy; urban areas; Norway
Abstract:
... Maples are common street and shade trees throughout the temperate zone. They are widely used for their wide range of ornamental traits and adaptability, particularly to urban settings. Unfortunately, some species such as Acer tataricum ssp. ginnala (Amur maple) and A. platanoides (Norway maple) have escaped cultivation to become pests or in some cases threaten native flora. However, these species ...
DOI:
10.3390/horticulturae6040070

5. Effects of drought on agronomic and fiber quality in an introgressed backcross inbred line population of Upland cotton under field conditions

Author:
Abdelraheem Abdelraheem; Nicholas Adams; Jinfa Zhang
Source:
Field crops research 2020 v.254 pp. 107850
ISSN:
0378-4290
Subject:
Gossypium barbadense; Gossypium hirsutum; agronomic traits; backcrossing; correlation; cultivars; drought; drought tolerance; field crops; flowering; genetic variation; germplasm; heritability; highlands; inbred lines; information; introgression; length; lint cotton; lint yield; micronaire; oilseed crops; population; research; seed coat; semiarid zones; weight
Abstract:
... Upland cotton (Gossypium hirsutum) is the most important fiber crop and an important oilseed crop in the world. Developing drought tolerant cultivars is important to sustainable cotton production in arid and semi-arid regions. However, there is a lack of information on genetic variation for drought tolerance in breeding populations. In this study, a backcross inbred line (BIL) Upland population wi ...
DOI:
10.1016/j.fcr.2020.107850

6. Molecular confirmation of candidate Hsp70 gene associated with heat tolerance in BC₃F₂ advanced backcross lines and their phenotypic resemblance with recurrent chilli Kulai

Author:
Magaji G. Usman; Mohd Y. Rafii; Oladosu Yusuff; Mohammad Y. Martini; Mohd R. Ismail; Raihana Ridzuan
Source:
Acta agriculturæ Scandinavica 2020 v.70 no.3 pp. 252-264
ISSN:
1651-1913
Subject:
agronomic traits; backcrossing; flowering; fruit yield; fruits; genes; genotype; heat tolerance; microsatellite repeats; parents; phenotype; plant height; temperature; Malaysia
Abstract:
... Domestic production of chilli in Malaysia is insufficient which accounted for 52% self-sufficiency level. Poor performance of local varieties under high temperatures above 42°C is one of the major factors affecting chilli production. This study was conducted with the objective of introgress heat-tolerant gene (Hsps) from AVPP0702 donor into Kulai using marker-assisted backcrossing. A total of 68 S ...
DOI:
10.1080/09064710.2019.1692899

7. 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

8. Overlapping flowering periods among Shorea species and high growth performance of hybrid seedlings promote hybridization and introgression in a tropical rainforest of Singapore

Author:
Tanaka Kenzo; Koichi Kamiya; Kang Min Ngo; Nik Faizu; Shawn Kaihekulani Yamauchi Lum; Shuichi Igarashi; Yuki Norichika; Tomoaki Ichie
Source:
Forest ecology and management 2019 v.435 pp. 38-44
ISSN:
0378-1127
Subject:
Shorea leprosula; backcrossing; canopy; flowering; fruits; greenhouse production; growth performance; habitat fragmentation; hybrids; interspecific hybridization; introgression; phenology; risk; seedlings; tropical rain forests; Singapore
Abstract:
... A considerable extent of interspecific hybridization among dominant canopy dipterocarp species was recently found in a tropical rain forest fragment in Singapore. However, information about the fertility of the hybrids and the growth of their successive hybrids remains limited. We studied the flowering phenology of four dipterocarp species in the genus Shorea (S. curtisii, S. leprosula, S. parvifo ...
DOI:
10.1016/j.foreco.2018.12.038

9. Evaluation of F1 and BC1 hybrids of Lilium lancifolium × Asiatic hybrid ‘Chianti’ by morphological analysis and fluorescence in situ hybridization

Author:
Fahad Ramzan; Hyoung Tae Kim; Kyung-ku Shim; Adnan Younis; Yu Hyeon Choi; Yoon-Jung Hwang; Ki-Byung Lim
Source:
Journal of horticultural science & biotechnology 2018 v.93 no.6 pp. 614-624
ISSN:
2380-4084
Subject:
Lilium lancifolium; backcrossing; biotechnology; bulbs; flowering; fluorescence in situ hybridization; genetic traits; genetic variation; horticulture; hybrids; karyotyping; leaves; loci; parents; phenotype; plant height; progeny; ribosomal DNA
Abstract:
... Lilium lancifolium Thunb. exhibits wide genetic diversity and numerous genetic traits within progeny populations. Parent morphology affects the distribution and assortment of progeny phenotypes. In this study, morphological analysis and fluorescence in situ hybridization (FISH) were conducted for cross progeny (F1 and BC1). Results showed that F1-1 hybrids had greater plant height than the parents ...
DOI:
10.1080/14620316.2018.1432296

10. The Genetic Variability of Floral and Agronomic Characteristics of Newly-Bred Cytoplasmic Male Sterile Rice

Author:
Raafat El-Namaky
Source:
Agriculture 2018 v.8 no.5 pp. -
ISSN:
2077-0472
Subject:
agronomic traits; backcrossing; commercialization; cytoplasmic male sterility; flowering; genetic variation; grain yield; heterosis; hybrids; maintainer lines; outcrossing; panicles; phenotype; phenotypic variation; plant height; pollen; rice; seed set; spikelets; stigma; tillers; variance; wet season
Abstract:
... Male sterility enabled commercialization of heterosis in rice but low seed set remains a constraint on hybrid dissemination. We evaluated 216 F6 maintainer lines for agronomic and floral characteristics in augmented design and selected 15 maintainer lines, which were testcrossed with IR58025A. Five backcrosses were conducted to transfer cytoplasmic male sterility (CMS) to select maintai ...
DOI:
10.3390/agriculture8050068

11. Overcoming obstacles to interspecific hybridization between Gossypium hirsutum and G. turneri

Author:
Yu Chen; Shouli Feng; Ting Zhao; Baoliang Zhou
Source:
Euphytica 2018 v.214 no.2 pp. 35
ISSN:
0014-2336
Subject:
Gossypium hirsutum; abiotic stress; backcrossing; chromosome number; chromosomes; colchicine; cotton; flowering; gene pool; genetic markers; hexaploidy; hybrids; insect resistance; interspecific hybridization; microsatellite repeats; ovule culture; ovules; pentaploidy; plant breeding; seedlings; seeds; selfing; tetraploidy; triploidy; wild relatives; China; Mexico
Abstract:
... Gossypium turneri, a wild cotton species (2n = 2X = 26, D₁₀D₁₀) originating from Mexico, possesses invaluable characteristics unavailable in the cultivated tetraploid cotton gene pool, such as caducous involucels at anthesis, resistance to insects and tolerance to abiotic stresses. However, transferring desired characteristics from wild species into cultivated cotton is often fraught with diverse ...
DOI:
10.1007/s10681-018-2118-2

12. Potential usability of CMS rucola for the breeding process

Author:
H. Budahn; O. Schrader; E. Klocke; T. Nothnagel
Source:
Acta horticulturae 2018 no.1202 pp. 39-46
ISSN:
0567-7572
Subject:
Brassica oleracea; DNA; Diplotaxis tenuifolia; Eruca vesicaria subsp. sativa; allotetraploidy; backcrossing; biomass production; breeding lines; cauliflower; chromosomes; colchicine; cytogenetic analysis; cytoplasm; cytoplasmic male sterility; diploidy; economic demand; female fertility; flow cytometry; flowering; genetic markers; genome; hybrids; ovule culture; phenotype; plant ovary; seed set; vigor
Abstract:
... Rucola is a leafy vegetable from the Brassicaceae family with continuously increasing economic demand. Under this name rocket salad (Eruca sativa) as well as the perennial wall rocket (Diplotaxis tenuifolia) are commercially distributed. So far, for both species no hybrid system is available. Therefore, breeding lines of both species were used to pollinate cytoplasmic male sterile (CMS) cauliflowe ...
DOI:
10.17660/ActaHortic.2018.1202.6

13. Registration of BTx623ms8, a New and Easily Identifiable Nuclear Male Sterile Mutant in Sorghum

Author:
Zhanguo Xin; Junping Chen; Yinping Jiao; Nicholas Gladman; Chad Hayes; Gloria Burow; Yves Emendack; J. J. Burke
Source:
Journal of plant registrations 2018 v.12 no.2 pp. 278-281
ISSN:
1936-5209
Subject:
Agricultural Research Service; Sorghum bicolor; backcrossing; flowering; genes; heterozygosity; homozygosity; male sterility; males; microsporogenesis; mutants; stigma
Abstract:
... The USDA–ARS has released a new nuclear male sterile sorghum [Sorghum bicolor (L.) Moench] mutant BTx623ₘₛ₈ (Reg. No. GS‐786, PI 682727). Previously, seven sorghum nuclear male sterile mutants have been reported, but three are no longer available. Here we register a new nuclear male sterile mutant isolated from a mutagenized BTx623 mutant library that is genetically different from any of the four ...
DOI:
10.3198/jpr2017.09.0063crgs

14. The Australian fresh market pineapple breeding program

Author:
G. Sanewski; J. De Faveri
Source:
Acta horticulturae 2017 no.1166 pp. 41-46
ISSN:
0567-7572
Subject:
Phytophthora; backcrossing; breeding programs; cultivars; flowering; food quality; fresh market; genes; industry; parents; pineapples; plant breeders; root rot; seedlings
Abstract:
... The Australian fresh market pineapple breeding program commenced in 1991 with the objective of developing clones more suited to fresh consumption than the industry standard clone, 'Smooth Cayenne'. These early crosses developed approximately 60,000 seedlings from which the 2 cultivars 'Aus-Jubilee' and 'Aus-Festival' have been commercialised. Plant Breeders Rights have been used to protect intelle ...
DOI:
10.17660/ActaHortic.2017.1166.6

15. Genetic effect of Striga resistance in sorghum genotypes

Author:
Emmanuel Mrema; Hussein Shimelis; Mark Laing
Source:
Euphytica 2017 v.213 no.12 pp. 280
ISSN:
0014-2336
Subject:
Fusarium oxysporum; Striga; additive gene effects; backcrossing; biological control agents; cultivars; experimental design; females; financial economics; flowering; genes; genetic variation; genotype; legumes; males; parasitic plants; parents; plant breeding; seed yield; Tanzania
Abstract:
... Striga is an important parasitic weed causing substantial economic losses in cereal and legume crop production in sub-Saharan Africa. Integrated Striga management approaches such as a combined use of Striga resistant varieties and Fusarium oxysporum f.sp. strigae (FOS), a biocontrol agent of Striga, are an option to control the parasite and to boost sorghum productivity. Understanding host gene ac ...
DOI:
10.1007/s10681-017-2073-3

16. Genomic clues to the parental origin of the wild flowering cherry Prunus yedoensis var. nudiflora (Rosaceae)

Author:
Ara Cho; Seunghoon Baek; Goon-Bo Kim; Chang-Ho Shin; Chan-Soo Kim; Kyung Choi; Youngje Kang; Hee-Ju Yu; Joo-Hwan Kim; Jeong-Hwan Mun
Source:
Plant biotechnology reports 2017 v.11 no.6 pp. 449-459
ISSN:
1863-5466
Subject:
Prunus yedoensis; backcrossing; cherries; flowering; genes; genetic markers; genomics; genotype; hybrid species; introgression; nucleotide sequences; phylogeny; population structure; progeny; South Korea
Abstract:
... Prunus yedoensis Matsumura is one of the popular ornamental flowering cherry trees native to northeastern Asia, and its wild populations have only been found on Jeju Island, Korea. Previous studies suggested that wild P. yedoensis (P. yedoensis var. nudiflora) is a hybrid species; however, there is no solid evidence on its exact parental origin and genomic organization. In this study, we developed ...
DOI:
10.1007/s11816-017-0465-4

17. Mapping and identification of a potential candidate gene for a novel maturity locus, E10, in soybean

Author:
Bahram Samanfar; Stephen J. Molnar; Martin Charette; Andrew Schoenrock; Frank Dehne; Ashkan Golshani; François Belzile; Elroy R. Cober
Source:
Theoretical and applied genetics 2017 v.130 no.2 pp. 377-390
ISSN:
0040-5752
Subject:
3' untranslated regions; 5' untranslated regions; Glycine max; alleles; backcrossing; crop production; cultivars; early development; exons; flowering; genomics; haplotypes; loci; microsatellite repeats; prediction; protein-protein interactions; sequence analysis; single nucleotide polymorphism; soybeans; Canada
Abstract:
... KEY MESSAGE: E10 is a new maturity locus in soybean and FT4 is the predicted/potential functional gene underlying the locus. Flowering and maturity time traits play crucial roles in economic soybean production. Early maturity is critical for north and west expansion of soybean in Canada. To date, 11 genes/loci have been identified which control time to flowering and maturity; however, the molecula ...
DOI:
10.1007/s00122-016-2819-7

18. Expression and heritability of late flowering and other quantitative traits in cultivated×Australian wild mungbean hybrids

Author:
Thuan D. Nguyen; Hang T. T. Vu; L. M. Bielig; R. J. Lawn
Source:
Crop & pasture science 2016 v.67 no.12 pp. 1235-1251
ISSN:
1836-0947
Subject:
additive effect; additive gene effects; autumn; backcrossing; branches; cultivars; early development; flowering; genes; germplasm; growth habit; harvest index; heritability; hybrids; mung beans; phenology; phenotypic correlation; pods; progeny; quantitative traits; seeds; Australia
Abstract:
... The expression and heritability of quantitative traits were examined in four hybrid mungbean populations, developed by crossing two cultivars, Kiloga and Berken, with two Australian wild accessions, ACC 1 and ACC 87. Phenological, morphological, agronomic and pod and seed traits were measured in the parental, F1, F2, and two F1×parent backcross progeny generations. Plants were grown in large pots ...
DOI:
10.1071/CP16297

19. Grain yield responses to varied level of moisture stress at reproductive stage in an interspecific population derived from Swarna/O. glaberrima introgression line

Author:
Surapaneni Saikumar; C.M.K. Varma; A. Saiharini; G.P Kalmeshwer; K. Nagendra; K. Lavanya; D. Ayyappa
Source:
Netherlands journal of agricultural science 2016 v.78 pp. 111-122
ISSN:
1573-5214
Subject:
backcrossing; biomass; canopy; chlorophyll; drought; drought tolerance; farmers; flowering; genotype; grain yield; harvest index; heritability; inflorescences; introgression; rice; screening; seedlings; selection intensity; temperature; water stress
Abstract:
... Understanding response of plants to drought stress is critical for developing drought tolerant genotypes with stable performance under water limiting conditions. A backcross inbred population derived in the background of a popular variety Swarna, was evaluated for yield and yield attributing traits under reproductive stage and shoot morphological traits at seedling stage under drought stress over ...
DOI:
10.1016/j.njas.2016.05.005

20. Herbivory and fitness components in an introgressive hybrid swarm of Senecio hercynicus and S. ovatus (Compositae, Senecioneae)

Author:
Christoph Oberprieler; Manuela Bog; Bianca Berchtold
Source:
Flora 2016 v.220 pp. 117-124
ISSN:
0367-2530
Subject:
Senecio; alkaloids; backcrossing; extinction; flowering; genotype; germination; herbivores; hybrids; introgression; leaves; linear models; new taxa; phenology; pollen; prediction; regression analysis; seed set; vegetation
Abstract:
... Hybridization among plant species may have considerable evolutionary consequences, from the formation of new taxa to the extinction of species by genetic swamping. The evolutionary fate of a system of hybridizing species is highly dependent on fitness differences between parental and hybrid genotypes. In an introgressed hybrid swarm of the rare Senecio hercynicus and its widely distributed congene ...
DOI:
10.1016/j.flora.2016.03.001

21. Improvement of the submergence tolerance and the brown planthopper resistance of the Thai jasmine rice cultivar KDML105 by pyramiding Sub1 and Qbph12

Author:
Siriporn Korinsak; Meechai Siangliw; Jate Kotcharerk; Jirapong Jairin; Jonaliza L. Siangliw; Boonrat Jongdee; Grienggrai Pantuwan; Nitat Sidthiwong; Theerayut Toojinda
Source:
Field crops research 2016 v.188 pp. 105-112
ISSN:
0378-4290
Subject:
Nilaparvata lugens; agronomic traits; backcrossing; climate change; cooking quality; cultivars; flowering; genetic background; grain quality; grain yield; introgression; lowlands; marker-assisted selection; paddies; phenotype; quantitative trait loci; rice; submergence; weather; Thailand
Abstract:
... Shifts in weather patterns and increases in the frequency and magnitude of extreme weather events resulting from unfavorable climate change have led to frequent flooding and brown planthopper outbreaks in rice fields, particularly those in rainfed lowland areas in Thailand. The traditional jasmine rice cultivar KDML105, which is popularly grown in rainfed lowland areas in north and northeast Thail ...
DOI:
10.1016/j.fcr.2015.10.025

22. Inheritance of entire and lobed leaf in Cynara cardunculus L.

Author:
F. S. Lopez Anido; E. A. Martin; S. M. Garcia; I. T. Firpo; E. L. Cointry
Source:
Acta horticulturae 2016 no.1147 pp. 159-162
ISSN:
0567-7572
Subject:
Cynara cardunculus; alleles; artichokes; backcrossing; cardoons; cultivars; early development; flowering; inheritance (genetics); landraces; leaves; mature plants
Abstract:
... In globe artichoke (Cynara cadunculus var. scolymus), the presence of entire leaf type in adult plants is a characteristic of the early Catanesi group, as 'Violet de Provence' and 'Blanca de Tudela', among others. Both of these attributes (i.e., entire leaf and precocity) failed to be transmitted by sexual means. In the cultivated cardoon (Cynara cadunculus var. altilis) some materials also presen ...
DOI:
10.17660/ActaHortic.2016.1147.22

23. Quantitative trait loci analysis of the time of floral initiation in tomato

Author:
Hajime Nakano; Nobuhiro Kobayashi; Ken Takahata; Yoko Mine; Nobuo Sugiyama
Source:
Scientia horticulturae 2016 v.201 pp. 199-210
ISSN:
0304-4238
Subject:
Solanum lycopersicum; Solanum pimpinellifolium; additive effect; backcrossing; chromosomes; cotyledons; crop production; early development; epistasis; flowering; germination; hypocotyls; inbred lines; leaves; quantitative trait loci; ripening; seedlings; sowing; tomatoes
Abstract:
... The potential of a single-truss tomato production system is dependent on earliness, but few genetic studies have investigated QTLs for earliness component traits in tomatoes. Thus, QTL analyses were performed using a backcross inbred line (BIL) population after dissecting days to the ripening of the first fruit into two stages, i.e., days from sowing to anthesis and days from anthesis to first fru ...
DOI:
10.1016/j.scienta.2016.02.009

24. Successful transferring of male sterility from globe artichoke into cultivated cardoon

Author:
F. S. Lopez Anido; E. A. Martin; S. M. Garcia; E. L. Cointry
Source:
Acta horticulturae 2016 no.1147 pp. 163-166
ISSN:
0567-7572
Subject:
Cynara; artichokes; backcrossing; bags; biomass; cardoons; flowering; heterosis; hybrids; loci; male fertility; males; pollen; pollination; pollinators; seeds
Abstract:
... In the cultivated forms of the genus Cynara, genetic male sterility was recorded only in globe artichoke (var. scolymus). Depending on the plant material used, its inheritance is controlled by up to three independent loci (ms1ms1ms2ms2ms3ms3), where the male sterile (MS) plants are recessive for all loci involved. In order to access the effect of these loci in a var. altilis background, a backcros ...
DOI:
10.17660/ActaHortic.2016.1147.23

25. Transcriptome profile of near-isogenic soybean lines for ß-conglycinin α-subunit deficiency during seed maturation

Author:
Bo Song; Lixin An; Yanjing Han; Hongxiu Gao; Hongbo Ren; Xue Zhao; Xiaoshuang Wei; Hari B. Krishnan; Shanshan Liu
Source:
Plos One 2016 v.11 no.8 pp. 1-25
ISSN:
1932-6203
Subject:
Glycine max; alleles; allergens; arginine; backcrossing; biochemical pathways; flowering; gene expression; gene expression regulation; homozygosity; metabolism; nutritive value; proline; seed maturation; seeds; soy protein; soybeans; transcription (genetics); transcriptome
Abstract:
... Crossing, backcrossing and molecular marker assisted background selection produced a soybean (Glycine max) near isogenic line (cgy-2NIL) containing cgy-2 allele, which is responsible for the absence of allergen α-subunit of ß-conglycinin. To identify α-null-related transcriptional changes, the gene expressions of ‘cgy-2NIL’and its recurrent parent ‘DN47’ were compared using Illumina high-throughpu ...
Handle:
10113/63147
DOI:
10.1371/journal.pone.0159723
PubMed:
27532666
PubMed Central:
PMC4988716

26. A new genomic library of melon introgression lines in a cantaloupe genetic background for dissecting desirable agronomical traits

Author:
Gorka Perpiñá; Cristina Esteras; Yves Gibon; Antonio J. Monforte; Belén Picó
Source:
BMC plant biology 2016 v.16 no.1 pp. 154
ISSN:
1471-2229
Subject:
backcrossing; cantaloupes; chromosomes; color; cultivars; flowering; fruit quality; genetic background; genome; genomic libraries; genomics; genotyping; homozygosity; introgression; markets; melting; phenotype; quantitative trait loci; ripening; single nucleotide polymorphism; sucrose
Abstract:
... BACKGROUND: Genomic libraries of introgression lines (ILs) consist of collections of homozygous lines with a single chromosomal introgression from a donor genotype in a common, usually elite, genetic background, representing the whole donor genome in the full collection. Currently, the only available melon IL collection was generated using Piel de sapo (var. inodorus) as the recurrent background. ...
DOI:
10.1186/s12870-016-0842-0
PubMed:
27390934
PubMed Central:
PMC4938994

27. A splice acceptor site mutation in TaGW2-A1 increases thousand grain weight in tetraploid and hexaploid wheat through wider and longer grains

Author:
James Simmonds; Peter Scott; Jemima Brinton; Teresa C. Mestre; Max Bush; Alicia del Blanco; Jorge Dubcovsky; Cristobal Uauy
Source:
Theoretical and applied genetics 2016 v.129 no.6 pp. 1099-1112
ISSN:
0040-5752
Subject:
Triticum aestivum; alleles; backcrossing; exons; flowering; hexaploidy; inflorescences; isogenic lines; mutants; rice; single nucleotide polymorphism; tetraploidy; wheat
Abstract:
... KEY MESSAGE : Across 13 experiments the gw2 - A1 mutant allele shifts grain size distribution consistently across all grains significantly increasing grain weight (6.6 %), width (2.8 %) and length (2.1 %) in tetraploid and hexaploid wheat. There is an urgent need to identify, understand and incorporate alleles that benefit yield in polyploid wheat. The rice OsGW2 gene functions as a negative regul ...
DOI:
10.1007/s00122-016-2686-2
PubMed:
26883045
PubMed Central:
PMC4869752
CHORUS:
10.1007/s00122-016-2686-2
Chorus Open Access:
10.1007/s00122-016-2686-2

28. Effect of cytoplasmic diversity on post anthesis heat tolerance in wheat

Author:
Shyamal Krisna Talukder; P. V. Vara Prasad; Tim Todd; Md Ali Babar; Jesse Poland; Robert Bowden; Allan Fritz
Source:
Euphytica 2015 v.204 no.2 pp. 383-394
ISSN:
0014-2336
Subject:
backcrossing; chlorophyll; cytoplasm; flowering; genes; greenhouses; growth chambers; heat stress; heat tolerance; isogenic lines; parents; photosystem II; plant breeding; reciprocal crosses; temperature; wheat
Abstract:
... To study the cytoplasmic effects on heat tolerance, the nuclear genomes of ten alloplasmic lines were substituted by four or five backcrosses using ‘Karl 92’, ‘Ventnor’, ‘U1275’ and ‘Jagger’ as the recurrent parent. During the final backcross, reciprocal crosses were made to develop cytoplasmic near isogenic lines. Sixty-eight BC5F1/BC4F1 lines and their parents were evaluated in growth chambers f ...
DOI:
10.1007/s10681-014-1350-7

29. Exploitation of beneficial alleles from maize (Zea mays L.) landraces to enhance performance of an elite variety in water stress environments

Author:
Silvestro Meseka; Abebe Menkir; Kwadwo Obeng-Antwi
Source:
Euphytica 2015 v.201 no.1 pp. 149-160
ISSN:
0014-2336
Subject:
Zea mays; agronomic traits; alleles; backcrossing; corn; corn ears; drought tolerance; dry season; flowering; genotype; grain yield; hybrids; introgression; landraces; recurrent selection; water stress; Nigeria
Abstract:
... Yield losses of maize due to drought stress (DS) in environments with limited rains can reach 100 %. Introgression of favorable alleles from diverse landraces into adapted elite varieties will improve performance, hence reducing losses. The objective of this study was to assess the performance of BC populations under DS and multiple locations (ML) after introgression of alleles from diverse maize ...
DOI:
10.1007/s10681-014-1214-1

30. Fine mapping of RBG2, a quantitative trait locus for resistance to Burkholderia glumae, on rice chromosome 1

Author:
Ritsuko Mizobuchi; Hiroyuki Sato; Shuichi Fukuoka; Seiya Tsushima; Masahiro Yano
Source:
Molecular breeding 2015 v.35 no.1 pp. 192
ISSN:
1380-3743
Subject:
Burkholderia glumae; backcrossing; chromosome mapping; chromosomes; cultivars; disease resistance; flowering; grain yield; homozygosity; inbred lines; inflorescences; microsatellite repeats; pathogens; quantitative trait loci; rice; India; Japan
Abstract:
... Bacterial grain rot (BGR), caused by the bacterial pathogen Burkholderia glumae, is a destructive disease of rice. At anthesis, rice panicles are attacked by the pathogen, and the infection causes unfilled or aborted grains, reducing grain yield and quality. Thus, increasing the level of BGR resistance is an important objective for rice breeding. A quantitative trait locus (QTL) on rice chromosome ...
DOI:
10.1007/s11032-015-0192-x
PubMed:
25620876
PubMed Central:
PMC4298652

31. Fine-mapping and validating qHTSF4.1 to increase spikelet fertility under heat stress at flowering in rice

Author:
Changrong Ye; Fatima A. Tenorio; Edilberto D. Redoña; Portia S. Morales–Cortezano; Gleizl A. Cabrega; Krishna S. V. Jagadish; Glenn B. Gregorio
Source:
Theoretical and applied genetics 2015 v.128 no.8 pp. 1507-1517
ISSN:
0040-5752
Subject:
Oryza sativa; backcrossing; chromosomes; crop production; flowering; food production; food security; genes; genotype; global warming; heat stress; heat tolerance; inflorescences; introgression; marker-assisted selection; polymerase chain reaction; quantitative trait loci; rice; single nucleotide polymorphism; temperature
Abstract:
... KEY MESSAGE : This study fine mapped and validated a QTL on rice chromosome 4 that increases spikelet fertility under high temperature (over 37 °C) at the flowering stage. Climate change has a negative effect on crop production and food security. Understanding the genetic mechanism of heat tolerance and developing heat-tolerant varieties is essential to cope with future global warming. Previously, ...
DOI:
10.1007/s00122-015-2526-9

32. Genetic diversity in a structured family of six generations of ornamental chili peppers (Capsicum Annuum)

Author:
M. F. Nascimento; N. F. F. Nascimento; E. R. Rego; C. H. Bruckner; F. L. Finger; M. M. Rego
Source:
Acta horticulturae 2015 no.1087 pp. 395-401
ISSN:
0567-7572
Subject:
Capsicum annuum; backcrossing; cluster analysis; cultivars; flowering; fruiting; fruits; genetic variation; hot peppers; ornamental plants; pepper; seeds; Brazil
Abstract:
... The genus Capsicum has been used as an ornamental plant, but there are only a few commercial cultivars for this purpose available in Brazil. The aim of this study was to analyze the genetic diversity in a structured family of six generations of ornamental pepper based on quantitative and qualitative data, separately and integrated in the same analysis. These studies are part of the Capsicum breedi ...
DOI:
10.17660/ActaHortic.2015.1087.53

33. New members of the Iridaceae family: interspecific hybridization between Iris Dichotoma and I. Domestica

Author:
Y. Guo; Y. Gao; Y. Shi; L. Ruan; Q. Zhang
Source:
Acta horticulturae 2015 no.1087 pp. 325-331
ISSN:
0567-7572
Subject:
Iridaceae; amplified fragment length polymorphism; backcrossing; color; females; flowering; flowers; hybrids; interspecific hybridization; males; ornamental plants; parents; progeny
Abstract:
... Iris dichotoma and I. domestica are Chinese native ornamental plants, belonging to the Iridaceae family. Amplified fragment length polymorphism (AFLP) markers showed that Iris dichotoma and I. domestica were closely related, indicating the possibility of interspecific hybridization between the two species. Interspecific hybrids with I. domestica as male parent and Iris dichotoma as mother were obt ...
DOI:
10.17660/ActaHortic.2015.1087.42

34. QTL analyses for anther length and dehiscence at flowering as traits for the tolerance of extreme temperatures in rice (Oryza sativa L.)

Author:
Tanveer Tazib; Yuriko Kobayashi; Hiroyuki Koyama; Tsutomu Matsui
Source:
Euphytica 2015 v.203 no.3 pp. 629-642
ISSN:
0014-2336
Subject:
Oryza sativa; anthers; backcrossing; chromosome mapping; chromosomes; cultivars; dehiscence; flowering; heat tolerance; heritability; inbred lines; phenotype; phenotypic variation; plant breeding; quantitative trait loci; rice; substitution lines; temperature
Abstract:
... Quantitative trait loci (QTLs) for anther length (AL), length of the dehiscence that forms at the apex of the anther [apical dehiscence length (ADL)] and at the base of the anther [basal dehiscence length (BDL)], and the percentage of longitudinal dehiscence (LD) in rice (Oryza sativa L.) were analyzed using data from two consecutive years (2009 and 2010). Backcross inbred lines (BILs) derived fro ...
DOI:
10.1007/s10681-014-1291-1

35. Association and Heritability Studies for Drought Resistance under Varied Moisture Stress Regimes in Backcross Inbred Population of Rice

Author:
R. SELLAMMAL; S. ROBIN; M. RAVEENDRAN
Source:
Rice science 2014 v.21 no.3 pp. 150-161
ISSN:
1672-6308
Subject:
air temperature; backcrossing; canopy; correlation; drought; drought tolerance; flowering; genotype; harvest index; heritability; inflorescences; leaf rolling; osmotic pressure; rice; water stress
Abstract:
... Drought stress is one of the major constraints affecting rice production and yield stability in the rainfed regions. To understand the physiological basis of drought resistance related component traits, we used a backcross inbred population of rice under three kinds of moisture regimes viz., non-stress, moderate (24.48%) and severe stress (73.97%) conditions which reflect the differential response ...
DOI:
10.1016/S1672-6308(13)60177-8

36. Development of apple pre-breeding genotypes highly resistant to fire blight by early flowering

Author:
P. M. Le Roux; H. Flachowsky; M. Jansch; M. Kellerhals; A. Patocchi; M. V. Hanke
Source:
Acta horticulturae 2014 v. no.1048 pp. 55-64
ISSN:
0567-7572
Subject:
Erwinia amylovora; agronomic traits; apples; backcrossing; crop production; cultivars; disease control; flowering; flowers; fruit quality; genetic markers; genotype; loci; microsatellite repeats; parents; quantitative trait loci; seedlings; transgenes
Abstract:
... Fire blight, caused by Erwinia amylovora, is a major concern in apple production since no existing control option has been proven to be completely effective and durable. The use of resistant apple cultivars in apple production could and should be an importance piece of an integrated management of the disease. High levels of resistance to Erwinia amylovora have been found in wild or ornamental appl ...

37. Major QTL for enhancing rice grain yield under lowland reproductive drought stress identified using an O. sativa/O. glaberrima introgression line

Author:
Surapaneni Saikumar; P. Kalmeshwer Gouda; A. Saiharini; C. Mohan Kumar Varma; O. Vineesha; G. Padmavathi; V.Venoy Shenoy
Source:
Field crops research 2014 v.163 pp. 119-131
ISSN:
0378-4290
Subject:
backcrossing; canopy; chromosome mapping; climate change; drought; flowering; grain yield; inbred lines; introgression; irrigated conditions; phenotypic variation; quantitative trait loci; rice; seedlings; temperature; water stress
Abstract:
... Water stress is a major abiotic stress limiting the rice production and yield stability in rainfed conditions and getting worse with the predicted global climatic change. A Backcross inbred line (BIL) population derived from Swarna/WAB 450-I-B-P-157-2-1 was screened for grain yield under reproductive stage drought stress and irrigated conditions during DS2013, WS2012 and DS2012. A major qDTY3.2 wi ...
DOI:
10.1016/j.fcr.2014.03.011

38. Post-anthesis heat and a Gpc-B1 introgression have similar but non-additive effects in bread wheat

Author:
Lancelot Maphosa; Nicholas C. Collins; Julian Taylor; Diane E. Mather
Source:
Functional plant biology 2014 v.41 no.9 pp. 1002-1008
ISSN:
1445-4408
Subject:
temperature; backcrossing; filling period; cultivars; flowering; alleles; loci; peduncle; greenhouses; parents; heat; wheat; heat stress; crop yield; introgression; heat treatment; protein content; grain protein
Abstract:
... High temperatures during grain filling can reduce the yield of wheat and affect its grain protein concentration. The Gpc-B1 locus of wheat also affects grain protein concentration, but it is not known whether its effects interact with those of heat. The aim of this study was to investigate the effects of high temperature in lines with and without functional (high-protein) alleles at Gpc-B1. A high ...
DOI:
10.1071/FP14060

39. Genetic Analysis of Streaked and Abnormal Floret Mutant st-fon

Author:
De-xi CHEN; Ting LI; Guang-lin QU; Wen-juan HUANG; Zhong-quan HE; Shi-gui LI
Source:
Rice science 2013 v.20 no.4 pp. 267-275
ISSN:
1672-6308
Subject:
backcrossing; bundle sheath cells; culms; florets; flowering; genetic techniques and protocols; leaves; meristems; mutants; phenotype; scanning electron microscopes; seedlings; thylakoids; ultrastructure
Abstract:
... A double mutant with streaked leaf and abnormal floret was found and temporarily named streaked leaf and floral organ number mutant (st-fon). For this mutant, besides white streak appeared on culm, leaves and panicles, the number of floral organs increased and florets cracked. The extreme phenotype was that several small florets grew from one floret or branch rachis in small florets extended and d ...
DOI:
10.1016/S1672-6308(13)60132-8

40. Identification of quantitative trait loci contributing to yield and seed quality parameters under terminal drought in barley advanced backcross lines

Author:
Rajesh Kalladan; Sebastian Worch; Hardy Rolletschek; Vokkaliga T. Harshavardhan; Lissy Kuntze; Christiane Seiler; Nese Sreenivasulu; Marion S. Röder
Source:
Molecular breeding 2013 v.32 no.1 pp. 71-90
ISSN:
1380-3743
Subject:
Hordeum vulgare subsp. vulgare; alleles; backcrossing; barley; carbon; drought; drought tolerance; flowering; genetic variation; nitrogen; nitrogen content; potassium iodide; quantitative trait loci; screening; seed quality; seed yield; spraying
Abstract:
... Drought is a major limiting factor for barley production, especially in the primary areas of its cultivation. Wild barley represents a major source of favourable alleles for increasing the genetic variation for multiple traits including resistance to both biotic and abiotic stresses. We used advanced backcross quantitative trait locus (AB-QTL) analysis of a BC3-doubled haploid population developed ...
DOI:
10.1007/s11032-013-9853-9

41. Intergeneric addition and substitution of Brassica napus with different chromosomes from Orychophragmus violaceus: Phenotype and cytology

Author:
Li Ding; Zhi-gang Zhao; Xian-Hong Ge; Zai-Yun Li
Source:
Scientia horticulturae 2013 v.164 pp. 303-309
ISSN:
0304-4238
Subject:
Brassica napus; Orychophragmus violaceus; backcrossing; epigenetics; flowering; flowers; genome; germ cells; leaves; loci; nullisomics; ornamental plants; parents; phenotype; progeny; ribosomal DNA; ribosomal RNA; somatic hybridization; stems; substitution lines; China
Abstract:
... The crucifer Orychophragmus violaceus (2n=24) with large purple flowers is cultivated as an ornamental plant in China. Previously intergeneric or even intertribal somatic hybrids between Brassica napus (2n=38, AACC) and O. violaceus were produced and backcrossing progenies developed. In this study, eight out of potential twelve mono-/disomic alien addition lines (MAALs/DAALs) carrying one or two c ...
DOI:
10.1016/j.scienta.2013.09.043

42. Multiple loci and genetic interactions involving flowering time genes regulate stem branching among natural variants of Arabidopsis

Author:
Xueqing Huang; Jia Ding; Sigi Effgen; Franziska Turck; Maarten Koornneef
Source:
new phytologist 2013 v.199 no.3 pp. 843-857
ISSN:
0028-646X
Subject:
Arabidopsis; alleles; backcrossing; branching; flowering; genetic techniques and protocols; genetically modified organisms; genotype; leaves; loci; plant architecture; progeny; quantitative trait loci; shoots
Abstract:
... Shoot branching is a major determinant of plant architecture. Genetic variants for reduced stem branching in the axils of cauline leaves of Arabidopsis were found in some natural accessions and also at low frequency in the progeny of multiparent crosses. Detailed genetic analysis using segregating populations derived from backcrosses with the parental lines and bulked segregant analysis was used t ...
DOI:
10.1111/nph.12306
PubMed:
23668187

43. Synchronous flowering times and asymmetrical hybridization in Typha latifolia and T. angustifolia in northeastern North America

Author:
Douglas Ball; Joanna R. Freeland
Source:
Aquatic botany 2013 v.104 pp. 224-227
ISSN:
0304-3770
Subject:
Typha angustifolia; Typha latifolia; backcrossing; female flowers; flowering; hybridization; hybrids; pollen; wetlands; North America
Abstract:
... Cattails (Typha spp.) in northeastern North American wetlands are increasingly dominant, partly because of hybridization between Typha latifolia and Typha angustifolia which results in the widespread and successful hybrid T.×glauca. Both parental species are protogynous, and previous studies have shown that T. angustifolia flowers earlier than T. latifolia. Nevertheless, experimental studies have ...
DOI:
10.1016/j.aquabot.2012.08.006

44. The contribution of submergence-tolerant (Sub1) rice varieties to food security in flood-prone rainfed lowland areas in Asia

Author:
Abdelbagi M. Ismail; Uma S. Singh; Sudhanshu Singh; Manzoor H. Dar; David J. Mackill
Source:
Field crops research 2013 v.152 pp. 83-93
ISSN:
0378-4290
Subject:
backcrossing; ecosystems; farmers; flowering; food security; genes; genetic background; landraces; lowlands; phenotype; poverty; rice; risk; seedlings; seeds; submergence; South East Asia
Abstract:
... Transient complete submergence reduces survival and yield on more than 20millionha of rice in rainfed lowlands and flood-prone areas in Asia. Poverty and food insecurity are concomitant problems in these heavily populated areas, because of the high risks and the lack of high-yielding, flood-tolerant varieties. Rice landraces that can withstand over 2 weeks of complete submergence were identified a ...
DOI:
10.1016/j.fcr.2013.01.007

45. Identification of genes that were differentially expressed and associated with fiber yield and quality using cDNA-AFLP and a backcross inbred line population

Author:
M. X. Pang; R. G. Percy; S. E. Hughs; D. C. Jones; J. F. Zhang
Source:
Molecular breeding 2012 v.30 no.2 pp. 975-985
ISSN:
1380-3743
Subject:
cotton; backcrossing; quantitative trait loci; flowering; amplified fragment length polymorphism; loci; complementary DNA; Gossypium hirsutum; selfing; reverse transcriptase polymerase chain reaction; genes; inbred lines; plant ovary; gene expression regulation; sequence homology
Abstract:
... Numerous quantitative trait loci (QTLs) have been identified from segregating hybrid populations between Upland (Gossypium hirsutum) and Pima (G. barbadense) cotton. However, the genetic basis of these QTLs is currently unknown. In the present study, an interspecific backcross inbred line (BIL) population was tested at two locations in 2005 and 2006, and used to identify and isolate polymorphic tr ...
DOI:
10.1007/s11032-011-9682-7

46. Mapping of QTL for Fusarium head blight resistance and morphological and developmental traits in three backcross populations derived from Triticum dicoccum × Triticum durum

Author:
Maria Buerstmayr; Karin Huber; Johannes Heckmann; Barbara Steiner; James C. Nelson; Hermann Buerstmayr
Source:
Theoretical and applied genetics 2012 v.125 no.8 pp. 1751-1765
ISSN:
0040-5752
Subject:
Fusarium head blight; Triticum turgidum subsp. dicoccon; Triticum turgidum subsp. durum; alleles; amplified fragment length polymorphism; backcrossing; chromosomes; cultivars; durum wheat; field experimentation; flowering; hexaploidy; microsatellite repeats; quantitative trait loci; tetraploidy
Abstract:
... Breeding for resistance to Fusarium head blight (FHB) in durum wheat continues to be hindered by the lack of effective resistance sources. Only limited information is available on resistance QTL for FHB in tetraploid wheat. In this study, resistance to FHB of a Triticum dicoccum line in the background of three Austrian T. durum cultivars was genetically characterized. Three populations of BC₁F₄-de ...
DOI:
10.1007/s00122-012-1951-2
PubMed:
22926291
PubMed Central:
PMC3493669

47. Morphological and molecular analysis of natural hybrids between the diploid Centaurea aspera L. and the tetraploid C. seridis L. (Compositae)

Author:
M. Ferriol; A. Garmendia; J. J. Ruiz; H. Merle; H. Boira
Source:
Plant biosystems 2012 v.146 no.sup1 pp. 86-100
ISSN:
1724-5575
Subject:
Centaurea aspera; DNA; alleles; backcrossing; diploidy; evolution; flow cytometry; flowering; gene flow; genetic variation; hybridization; hybrids; parents; progeny; random amplified polymorphic DNA technique; tetraploidy; triploidy; Spain
Abstract:
... Polyploidy and hybridisation are the basis of the evolution of Centaurea (Compositae). At the El Saler dune field (eastern Spain), the diploid Centaurea aspera ssp. stenophylla and the tetraploid C. seridis ssp. maritima form a polyploid complex in which C. × subdecurrens individuals occur. This polyploid complex was analysed morphologically and genetically, using random amplified polymorphic DNA ...
DOI:
10.1080/11263504.2012.727878

48. Sensory changes related to breeding for plant architecture and resistance to viruses and anthracnose in bean market class Fabada (Phaseolus vulgaris L.)

Author:
J. J. Ferreira; Romero R. del Castillo; E. Perez-Vega; M. Plans; J. Simó; F. Casañas
Source:
Euphytica 2012 v.186 no.3 pp. 687-696
ISSN:
0014-2336
Subject:
determinate growth; beans; flowering; Phaseolus vulgaris; genes; cooking; backcrossing; sensory evaluation; landraces; viruses; phenotypic variation; case studies; anthracnose; plant breeding; testa; plant architecture; sensory properties; inbreeding; environmental factors; soil types; rain; pedigree
Abstract:
... Consumers hold landraces in high esteem and often consider that breeding programs lead to a loss of sensory quality, although consumers’ opinions have not been scientifically confirmed. As a model case of study we recorded seed sensory traits in six inbred common bean lines classified in the market class Fabada obtained by backcrossing and/or pedigree selection (to change the plant architecture an ...
DOI:
10.1007/s10681-011-0540-9

49. Dynamic expression of green fluorescent protein and Bacillus thuringiensis Cry1Ac endotaxin in interspecific hybrids and successive backcross generations (BC1 and BC2) between transgenic Brassica napus crop and wild Brassica juncea

Author:
L. Lei; C.N. Stewart Jr; Z.‐X. Tang; W. Wei
Source:
Annals of applied biology 2011 v.159 no.2 pp. 212-219
ISSN:
0003-4746
Subject:
Bacillus thuringiensis; Brassica juncea; Brassica napus var. napus; backcrossing; biosafety; cole crops; flowering; fluorescence; gene expression; gene flow; genetic markers; genotype; green fluorescent protein; greenhouses; hybrids; transgenes
Abstract:
... The persistence and stability of a transgene encoding a Bacillus thuringiensis (Bt) Cry1Ac insecticidal protein was investigated in hybrids between crop Brassica napus and a recurrent wild Brassica juncea population. Interspecific hybrids (F1) and backcross progenies (BC1, BC2) containing green fluorescent protein (GFP) and Bt genes were successfully produced in the greenhouse. Stable Bt toxin lev ...
DOI:
10.1111/j.1744-7348.2011.00486.x

50. Genetic dissection of maize phenology using an intraspecific introgression library

Author:
Salvi, Silvio; Corneti, Simona; Bellotti, Massimo; Carraro, Nicola; Sanguineti, Maria C.; Castelletti, Sara; Tuberosa, Roberto
Source:
BMC Plant biology 2011 v.11 pp. -
ISSN:
1471-2229
Subject:
Zea mays; backcrossing; corn; flowering; genetic background; genome; introgression; isogenic lines; phenology; phenotype; phenotypic variation; quantitative trait loci; quantitative traits; temperate zones; Canada
Abstract:
... Background Collections of nearly isogenic lines where each line carries a delimited portion of a donor source genome into a common recipient genetic background are known as introgression libraries and have already shown to be instrumental for the dissection of quantitative traits. By means of marker-assisted backcrossing, we have produced an introgression library using the extremely early-flowerin ...
DOI:
10.1186/1471-2229-11-4
PubMed:
21211047
PubMed Central:
PMC3025946

51. Long Juvenile Soybean Flowering Responses under Very Short Photoperiods

Author:
Elroy R. Cober
Source:
Crop science 2011 v.51 no.1 pp. 140-145
ISSN:
0011-183X
Subject:
maturity groups; juvenility; backcrossing; Glycine max; flowering; loci; gene segregation; phenology; soybeans; genotype; photoperiod; genetic variation; introgression
Abstract:
... Long juvenile (LJ) soybean [Glycine max (L.) Merr.] lines exhibit delayed flowering under short photoperiods. Two loci, J and E6, have been reported to control this response. The objectives of this work were to compare phenology of E6E6 and e6e6 isolines across a range of photoperiods, to determine the genetic control of the LJ trait during the introgression of e6 into an early maturity background ...
DOI:
10.2135/cropsci2010.05.0262

52. Marker-assisted backcross selection in an interspecific Cucumis population broadens the genetic base of cucumber (Cucumis sativus L.)

Author:
Behera, Tusar K.; Staub, Jack E.; Behera, Snigdha; Delannay, Isabelle Y.; Chen, Jin Feng
Source:
Euphytica 2011 v.178 no.2 pp. 261-272
ISSN:
0014-2336
Subject:
Cucumis sativus; DNA; backcrossing; branches; cucumbers; domestication; flowering; fruit quality; fruits; genetic background; genetic variation; genome; interspecific hybridization; introgression; marker-assisted selection; parents; progeny; selection response; vegetative growth
Abstract:
... Cucumber (Cucumis sativus L.) is a major cucurbit vegetable species whose genetic base has been drastically reduced during its domestication. The crop's narrow genetic base (3-12% DNA polymorphism) has resulted from the use of limited genetic material and intense selection during plant improvement. Recently, however, interspecific hybridization has been successful in Cucumis via mating of C. hystr ...
DOI:
10.1007/s10681-010-0315-8

53. Molecular markers assist in the development of diverse inbred backcross lines in European Long cucumber (Cucumis sativus L.)

Author:
Delannay, Isabelle Y.; Staub, Jack E.
Source:
Euphytica 2011 v.178 no.2 pp. 229-245
ISSN:
0014-2336
Subject:
Cucumis sativus; backcrossing; bacterial artificial chromosomes; branches; cucumbers; expressed sequence tags; flowering; fresh market; fruit quality; genetic background; genetic distance; genetic markers; genetic variation; greenhouses; hydroponics; inbred lines; loci; markets; microsatellite repeats; multivariate analysis; parents; progeny; seeds; single nucleotide polymorphism; Netherlands; Wisconsin
Abstract:
... The popular fresh-market European Long cucumber (Cucumis sativus L.) is grown commercially worldwide under controlled, greenhouse environments. However, it has a narrow genetic base, where private and public improvement programs can trace their origins to comparatively few accessions. Therefore, a project was designed to identify diverse genotypes for use in the formation and analysis of inbred ba ...
DOI:
10.1007/s10681-010-0306-9

54. Backcross Introgression of the Cucumis hystrix Genome Increases Genetic Diversity in U.S. Processing Cucumber

Author:
Delannay, Isabelle Y.; Staub, Jack E.; Chen, Jin Feng
Source:
Journal of the American Society for Horticultural Science 2010 v.135 no.4 pp. 351-361
ISSN:
0003-1062
Subject:
flowering; genetic markers; backcrossing; diploidy; phenology; genetic distance; sex ratio; fruit set; interspecific hybridization; wild relatives; shape; introgression; food processing quality; Cucumis sativus; wide hybridization; cucumbers; plant genetic resources; plant architecture; general combining ability; genetic variation
Abstract:
... The genetic base of commercial cucumber (Cucumis sativus L.) is extremely narrow (about 3%–8% polymorphism). Wide-based crosses within C. sativus [i.e., C. sativus var. sativus x C. sativus var. hardwickii (R.) Alef.] and interspecific hybridization attempts before 1995 have not substantially increased genetic diversity for plant improvement. However, in 1995, an amphidiploid (Cucumis hytivus Chen ...
Handle:
10113/45067

55. Characterization of Apomictic BC7 and BC8 Pearl Millet: Meiotic Chromosome Behavior and Construction of an ASGR-carrier Chromosome-specific Library

Author:
M. Singh; J.A. Conner; Y.-J. Zeng; W. W. Hanna; V. E. Johnson; P. Ozias-Akins
Source:
Crop science 2010 v.50 no.3 pp. 892-902
ISSN:
0011-183X
Subject:
flowering; millets; pollen; nucleic acid hybridization; backcrossing; phenology; apomixis; genotype; wild relatives; Pennisetum squamulatum; seed set; embryo sac; Pennisetum glaucum; dominance (genetics); plant genetic resources; meiosis; viability; loci; nucleotide sequences; crossbreds; plant morphology
Abstract:
... Apospory in Pennisetum squamulatum Fresen is inherited as a single-locus dominant trait. Molecular analysis has identified the apospory-specific genomic region (ASGR), a large segment of one chromosome that is necessary and sufficient to confer apomixis. To transfer apospory from P. squamulatum to pearl millet [P. glaucum (L.) R. Br.], advanced backcrosses were generated. Here we report the charac ...
DOI:
10.2135/cropsci2009.05.0263

56. Testing hybridization hypotheses and evaluating the evolutionary potential of hybrids in mangrove plant species

Author:
LO, E.Y.Y.
Source:
Journal of evolutionary biology 2010 v.23 no.10 pp. 2249-2261
ISSN:
1010-061X
Subject:
Rhizophora; backcrossing; biodiversity; chloroplasts; flowering; hybridization; hybrids; microsatellite repeats; parents; phylogeny
Abstract:
... Natural hybridization is of marked importance from global to local biological diversity. In mangroves, species ranges overlap extensively with one another and species share a long overlap of flowering time. Although hybridization has been suggested, patterns of hybridization and the evolutionary potential of hybrids are not yet fully understood. This study provides molecular evidence for the paren ...
DOI:
10.1111/j.1420-9101.2010.02087.x
PubMed:
20796134

57. Transfer of the Kosena Rfk1 gene, required in hybrid seed production, from oilseed rape to turnip rape

Author:
Niemelä, Tarja; Seppänen, Mervi; Jauhiainen, Lauri; Tulisalo, Unto
Source:
Euphytica 2010 v.175 no.1 pp. 1-12
ISSN:
0014-2336
Subject:
cytoplasmic male sterility; backcrossing; ovules; plant breeding; flowering; polymerase chain reaction; plant fertility; heterozygosity; quantitative genetics; inbreeding; genes; Brassica napus; Brassica rapa; interspecific hybridization; homozygosity; restorer lines; pollen; cross pollination
Abstract:
... The Ogura cytoplasmic male sterility and fertility restoring (cms/Rf) system is one of the most promising hybrid systems in Brassica species. The Ogura cms has been introduced earlier into spring turnip rape (Brassica rapa L.) and the sterility has been stable. To enable the production of F1 hybrids in turnip rape, the Kosena fertility restoring gene (Rfk1), a homologue of the Ogura fertility rest ...
DOI:
10.1007/s10681-010-0171-6

58. Use of molecular markers aids in the development of diverse inbred backcross lines in Beit Alpha cucumber (Cucumis sativus L.)

Author:
Delannay, Isabelle Y.; Staub, Jack E.
Source:
Euphytica 2010 v.175 no.1 pp. 65-78
ISSN:
0014-2336
Subject:
backcrossing; weight; plant breeding; flowering; marker-assisted selection; gynoecium; Cucumis sativus; geographical variation; cucumbers; flowers; genotype; inbred lines; length; genetic variation; genetic markers; United States; Israel; Netherlands; Turkey (country)
Abstract:
... Beit Alpha cucumber (Cucumis sativus L.) is a Mediterranean fresh-market type with a relatively narrow genetic base. To broaden its base for plant improvement, 42 diverse accessions were compared employing a previously defined standard marker array to choose wide-based parental lines for use in backcross introgression. Inbred backcross lines (IBL) were developed by crossing Beit Alpha line ‘04HD5' ...
DOI:
10.1007/s10681-010-0183-2

59. Genetic location and evaluation of chromosomal segments for drought tolerance at flowering stage in maize using selected backcross populations

Author:
Li, Y.; Liu, C.; Shi, Y.; Song, Y.; Wang, T.
Source:
Plant breeding 2009 v.128 no.4 pp. 342-347
ISSN:
0179-9541
Subject:
alleles; backcrossing; chromosomes; corn; crops; drought tolerance; flowering; genetic markers; introgression; water stress
Abstract:
... Development and evaluation of introgression lines have become one of the promising approaches to understanding genetic mechanisms of important traits in crops. In this study, three sets of drought tolerance (DT) selected backcross populations in maize, including two BC₂S₁ populations and one BC₃S₁ population, from a cross of Qi319 and Huangzaosi (recurrent parent) were developed by selecting for s ...
DOI:
10.1111/j.1439-0523.2009.01666.x

60. Indirect costs of a nontarget pathogen mitigate the direct benefits of a virus-resistant transgene in wild Cucurbita

Author:
Sasu, Miruna A.; Ferrari, Matthew J.; Du, Daolin; Winsor, James A.; Stephenson, Andrew G.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2009 v.106 no.45 pp. 19067-19071
ISSN:
0027-8424
Subject:
backcrossing; cultivars; plant growth; flowering; wild plants; transgenes; bacterial wilt; gourds; transgenic plants; Cucurbita pepo var. texana; crop damage; Zucchini yellow mosaic virus; plant reproduction; Acalymma; Diabrotica; Erwinia tracheiphila; fruiting; introgression
Abstract:
... Virus-resistant transgenic squash are grown throughout the United States and much of Mexico and it is likely that the virus-resistant transgene (VRT) has been introduced to wild populations repeatedly. The evolutionary fate of any resistance gene in wild populations and its environmental impacts depend upon trade-offs between the costs and benefits of the resistance gene. In a 3-year field study u ...
DOI:
10.1073/pnas.0905106106
PubMed:
19858473
PubMed Central:
PMC2776422

61. Mining cotton fiber strength candidate genes based on transcriptome mapping

Author:
HengWei Liu; XingFen Wang; YuXin Pan; RuiFeng Shi; GuiYin Zhang; ZhiYing Ma
Source:
Chinese science bulletin 2009 v.54 no.24 pp. 4651-4657
ISSN:
1001-6538
Subject:
1-phosphatidylinositol 4-kinase; Gossypium hirsutum; alpha,alpha-trehalose-phosphate synthase (UDP-forming); amplified fragment length polymorphism; backcrossing; cell walls; cellulose; chromosome mapping; flowering; genes; lint cotton; metabolism; morphogenesis; phenylalanine ammonia-lyase; quantitative trait loci; transcription factors; transcriptome; variance
Abstract:
... Cotton fiber strength is mainly determined during the secondary cell wall (SCW) thickening stage. In 24–25 days post anthesis (DPA) of SCW thickening stage, cDNA-amplified fragment length polymorphism (AFLP) was carried out to construct fiber transcriptome groups. Based on these groups, cotton fiber strength candidate genes were detected by composite interval mapping (CIM) through quantitative tra ...
DOI:
10.1007/s11434-009-0708-z

62. Selection before backcross during exotic germplasm introgression

Author:
Ochanda, N.; Yu, J.; Bramel, P.J.; Menkir, A.; Tuinstra, M.R.; Witt, M.D.
Source:
Field crops research 2009 v.112 no.1 pp. 37-42
ISSN:
0378-4290
Subject:
germplasm; backcrossing; prediction; flowering; phenotype; grain sorghum; models; height; agronomic traits; plant adaptation; plant genetic resources; grain yield; inbred lines; Sorghum bicolor; genetic variation; artificial selection; introgression; Kansas
Abstract:
... Introgression of genes from exotic germplasm into breeding populations can broaden the genetic base of crop improvement. Only a very small percentage of genetic variability has been used in crop breeding programs. Traditionally, F₁ plants are used to backcross to the adapted lines or populations. An alternative approach is to backcross the F₂ individuals selected for agronomic acceptability. Our o ...
DOI:
10.1016/j.fcr.2009.01.012

63. A method for accelerated trait conversion in plant breeding

Author:
Lewis, Ramsey S.; Kernodle, S. P.
Source:
Theoretical and applied genetics 2009 v.118 no.8 pp. 1499-1508
ISSN:
0040-5752
Subject:
Arabidopsis thaliana; Nicotiana tabacum; backcrossing; crops; cultivars; disease resistance; epigenetics; flowering; gene overexpression; gene transfer; genetic background; loci; photoperiod; plant breeding; tobacco; tobacco use; transgenes
Abstract:
... Backcrossing is often used in cultivar development to transfer one or a few genes to desired genetic backgrounds. The duration necessary to complete such 'trait conversions' is largely dependent upon generation times. Constitutive overexpression of the Arabidopsis thaliana gene FT (FLOWERING LOCUS T) induces early-flowering in many plants. Here, we used tobacco (Nicotiana tabacum L.) as a model sy ...
DOI:
10.1007/s00122-009-0998-1
PubMed:
19266176

64. A review on transgenic approaches to accelerate breeding of woody plants

Author:
Flachowsky, H.; Hanke, M.-V.; Peil, A.; Strauss, S.H.; Fladung, M.
Source:
Plant breeding 2009 v.128 no.3 pp. 217-226
ISSN:
0179-9541
Subject:
Arabidopsis thaliana; backcrossing; biotechnology; cultivars; environmental factors; flowering; forest trees; gene overexpression; genetically modified organisms; germ cells; juveniles; new variety; progeny; regulator genes; woody plants
Abstract:
... The long juvenile period of trees delays the breeding of new varieties. Flowering begins within 5-10 years in most cultivated forest trees under intensive management, but can take up to 40 years in some species and environmental conditions. To accelerate the breeding process several agrotechnical and biotechnical methods have been developed. Knowledge about genes controlling flower initiation in m ...
DOI:
10.1111/j.1439-0523.2008.01591.x

65. Airborne-pollen pool and mating pattern in a hybrid zone between Pinus pumila and P. parviflora var. pentaphylla

Author:
ITO, MEGUMI; SUYAMA, YOSHIHISA; OHSAWA, TAKESHI A.; WATANO, YASUYUKI
Source:
Molecular ecology 2008 v.17 no.23 pp. 5092-5103
ISSN:
0962-1083
Subject:
Pinus pumila; adults; assortative mating; backcrossing; chloroplast DNA; flowering; grains; hybrids; introgression; parents; phenology; pollen; polymerase chain reaction; reproductive isolation; seed trees; seeds; Japan
Abstract:
... The reproductive isolation barriers and the mating patterns among Pinus pumila, P. parviflora var. pentaphylla and their hybrids were examined by flowering phenology and genetic assays of three life stages: airborne-pollen grains, adults and seeds, in a hybrid zone on Mount Apoi, Hokkaido, Japan. Chloroplast DNA composition of the airborne-pollen was determined by single-pollen polymerase chain re ...
DOI:
10.1111/j.1365-294X.2008.03966.x
PubMed:
19120991

66. Characterization of inter-varietal chromosome substitution lines of wheat using molecular markers

Author:
K. Pánková; Z. Milec; M. Leverington-Waite; S. Chebotar; J.W. Snape
Source:
Czech journal of genetics and plant breeding v.44 no.1 pp. 22-29
ISSN:
1212-1975
Subject:
aneuploidy; backcrossing; chromosomes; flowering; genes; genetic markers; growth habit; substitution lines; vernalization; wheat
Abstract:
... Several sets of wheat inter-varietal chromosome substitution lines (SLs) have been produced over the last fifty years at the CRI (formerly RICP) in Prague-Ruzyně, based on cytogenetic manipulations using aneuploids. Lines with defined genes have been obtained which significantly influence growth habit and flowering time and these have been used particularly in the study of the genetics and physiol ...
DOI:
10.17221/1329-cjgpb

67. Does sequence polymorphism of FLC paralogues underlie flowering time QTL in Brassica oleracea

Author:
Razi, H.; Howell, E. C.; Newbury, H. J.; Kearsey, M. J.
Source:
Theoretical and applied genetics 2008 v.116 no.2 pp. 179-192
ISSN:
0040-5752
Subject:
Arabidopsis; Brassica oleracea; alleles; backcrossing; confidence interval; flowering; haploidy; introns; linkage groups; parents; quantitative trait loci; stop codon; temporal variation
Abstract:
... Previous locations of flowering time (FT) QTL in several Brassica species, coupled with Arabidopsis synteny, suggest that orthologues of the genes FLC, FY or CONSTANS might be the candidates. We focused on FLC, and cloned paralogous copies in Brassica oleracea, obtained their genomic DNA sequences, and confirmed their locations relative to those of known FT-QTL by genetical mapping. They varied in ...
DOI:
10.1007/s00122-007-0657-3
PubMed:
17938878

68. Introgression of a quantitative trait locus for spikelets per panicle from Oryza minuta to the O. sativa cultivar Hwaseongbyeo

Author:
Linh, L.-H.; Hang, N.-T.; Jin, F.-X.; Kang, K.-H.; Lee, Y.-T.; Kwon, S.-J.; Ahn, S.-N.
Source:
Plant breeding 2008 v.127 no.3 pp. 262-267
ISSN:
0179-9541
Subject:
Oryza minuta; Oryza sativa; alleles; backcrossing; branches; cultivars; flowering; genetic lines; inflorescences; introgression; loci; marker-assisted selection; microsatellite repeats; molecular cloning; quantitative trait loci
Abstract:
... A new QTL for spikelets per panicle (SPP) was detected on the long arm of chromosome 7 in an F₂ population derived from a cross between the japonica cultivar Hwaseongbyeo and WH29001. WH29001, an advanced backcross line was developed by introgressing chromosomal segments from an accession of O. minuta (2n = 48, BBCC, Acc. no. 101141) into the O. sativa subsp. japonica cv. Hwaseongbyeo. The O. minu ...
DOI:
10.1111/j.1439-0523.2007.01462.x

69. Introgression of reproductive traits from Trifolium nigrescens increases the seed yield of white clover (T. repens)

Author:
Marshall, A.H.; Michaelson-Yeates, T.P.T.; Abberton, M.T.
Source:
Plant breeding 2008 v.127 no.6 pp. 597-601
ISSN:
0179-9541
Subject:
Trifolium nigrescens; Trifolium repens; backcrossing; field experimentation; florets; flowering; hybrids; interspecific hybridization; introgression; leaves; reproductive traits; seed yield; seeds; yield components
Abstract:
... Interspecific hybrids between white clover and the annual, profuse flowering ball clover have been developed as a strategy to improve the potential seed yield of white clover. The seed yield and seed yield components of advanced white clover x ball clover hybrids were compared with white clover in replicated field experiments over two harvest years. The backcross 3 hybrid had more reproductive nod ...
DOI:
10.1111/j.1439-0523.2008.01534.x

70. Quantitative trait loci controlling flowering time and related traits in a Solanum lycopersicum x S. pimpinellifolium cross

Author:
Cagas, Cyd Celeste; Lee, O New; Nemoto, Keisuke; Sugiyama, Nobuo
Source:
Scientia horticulturae 2008 v.116 no.2 pp. 144-151
ISSN:
0304-4238
Subject:
Solanum lycopersicum var. lycopersicum; tomatoes; vegetable crops; Solanum pimpinellifolium; wild relatives; plant genetic resources; interspecific hybridization; hybrids; flowering; phenology; crop yield; quantitative trait loci; agronomic traits; chromosome mapping; leaves; leaf area; shoots; dry matter accumulation; height; backcrossing; phenotype; pleiotropy; genetic correlation
Abstract:
... Flowering time is an important factor determining early yield in tomato. However, the quantitative trait loci (QTLs) controlling flowering time and their relation to other QTLs for morphological and physiological traits have not been well studied. The aim of this study was to map the chromosomal regions controlling days to flowering (DTF) concurrently with other traits, such as the number of leave ...
DOI:
10.1016/j.scienta.2007.12.003

71. A hybrid zone dominated by fertile F₁s of two alpine shrub species, Phyllodoce caerulea and Phyllodoce aleutica, along a snowmelt gradient

Author:
KAMEYAMA, Y.; KASAGI, T.; KUDO, G.
Source:
Journal of evolutionary biology 2008 v.21 no.2 pp. 588-597
ISSN:
1010-061X
Subject:
Phyllodoce; alpine plants; backcrossing; chloroplast DNA; ecosystems; flowering; gene flow; haplotypes; hybrids; phenology; pollen flow; seed germination; shrubs; snowmelt; Japan
Abstract:
... In alpine ecosystems, the steep environmental gradients produced by the difference in snowmelt timing create a dynamic selective regime for alpine plants. As these gradients directly alter flowering phenology, they can affect pollen-mediated gene flow among populations of single and related species. In northern Japan, we found a hybrid zone dominated by fertile F₁s of two alpine shrub species, Phy ...
DOI:
10.1111/j.1420-9101.2007.01476.x

72. Effects of Hordeum chilense cytoplasm on agronomic traits in common wheat

Author:
Atienza, S.G.; Martín, A.C.; Ramírez, M.C.; Martín, A.; Ballesteros, J.
Source:
Plant breeding 2007 v.126 no.1 pp. 5-8
ISSN:
0179-9541
Subject:
Aegilops; Hordeum chilense; Triticum aestivum; agronomic traits; backcrossing; chloroplasts; field experimentation; flowering; genetic markers; genome; microsatellite repeats; wheat
Abstract:
... The genome of bread wheat, AABBDD, was substituted into the cytoplasm of Hordeum chilense by repeated backcrossing to produce alloplasmic lines. The aim of this work was to investigate the effect of H. chilense cytoplasm on agronomic traits in common wheat. Three cytolines were developed. The alloplasmic nature of these lines was confirmed using chloroplast simple-sequence repeat markers. Each cyt ...
DOI:
10.1111/j.1439-0523.2007.01319.x

73. Epistatic interactions of three loci regulate flowering time under short and long daylengths in a backcross population of rice

Author:
Gu, Xing-You; Foley, Michael E.
Source:
Theoretical and applied genetics 2007 v.114 no.4 pp. 745-754
ISSN:
0040-5752
Subject:
alleles; backcrossing; flowering; loci; photoperiod; quantitative trait loci; rice; selenium
Abstract:
... The short-day plant rice varies greatly in photoperiod sensitivity (PS) for flowering. The hybrid F₁ from a cross between the day-neutral pure line EM93-1 and the weedy rice accession SS18-2 had stronger PS than SS18-2. Some BC₁ (EM93-1/F₁) segregates were even more sensitive to photoperiod than the F₁, as indicated by later flowering or no flowering after 250 days under a 14-h long daylength. A g ...
DOI:
10.1007/s00122-006-0475-z
PubMed:
17171390

74. Production and characterization of arboreous and fertile Solanum melongena + Solanum marginatum somatic hybrid plants

Author:
Borgato, Lorena; Conicella, Clara; Pisani, Federica; Furini, Antonella
Source:
Planta 2007 v.226 no.4 pp. 961-969
ISSN:
0032-0935
Subject:
Solanum marginatum; Solanum melongena; annuals; backcrossing; chromosome number; chromosome pairing; crops; eggplants; energy; flowering; fruits; greenhouses; heterokaryon; hybrids; leaves; microsatellite repeats; microsporogenesis; perennials; pollen; polymerase chain reaction; protoplasts; seeds; somatic hybridization
Abstract:
... In crop plants the shift from being annuals to perennials may allow future agricultural systems requiring less energy inputs. The practicability of this was tested for Solanum melongena. Leaf protoplasts of S. melongena (2n = 2x = 24) and one of the related arborescent species Solanum marginatum (2n = 2x = 24) were electrofused and fertile somatic hybrids with arborescent habit regenerated. The ma ...
DOI:
10.1007/s00425-007-0542-y
PubMed:
17520277

75. QTL mapping with near-isogenic lines in maize

Author:
S. J. Szalma; B. M. Hostert; J. R. LeDeaux; C. W. Stuber; J. B. Holland
Source:
Theoretical and applied genetics 2007 v.114 no.7 pp. 1211-1228
ISSN:
0040-5752
Subject:
backcrossing; chromosome mapping; corn; flowering; genetic background; geneticists; genome; hybrids; introgression; loci; marker-assisted selection; quantitative trait loci; restriction fragment length polymorphism; testcrosses; water stress
Abstract:
... A set of 89 near-isogenic lines (NILs) of maize was created using marker-assisted selection. Nineteen genomic regions, identified by restriction fragment length polymorphism loci and chosen to represent portions of all ten maize chromosomes, were introgressed by backcrossing three generations from donor line Tx303 into the B73 genetic background. NILs were genotyped at an additional 128 simple seq ...
DOI:
10.1007/s00122-007-0512-6
PubMed:
17308934

76. The effect of the cytoplasms of Brassica napus and B. juncea on some characteristics of B. carinata, including flower morphology

Author:
Caitao T. Chang; Ryota Uesugi; Kana Hondo; Fumika Kakihara; Masahiro Kato
Source:
Euphytica 2007 v.158 no.1-2 pp. 261-270
ISSN:
0014-2336
Subject:
backcrossing; interspecific variation; flowering; androecium; gynoecium; corolla; plant taxonomy; phylogeny; phenology; Brassica juncea; plant morphology; cytoplasm; cell nucleus; Brassica napus; interspecific hybridization; Brassica carinata; rapeseed
Abstract:
... This study was conducted to assess the cytoplasm effects of Brassica napus and B. juncea on the some characteristics of B. carinata, as well as the phylogenetic distances separating the three species. Alloplasmic lines of B. carinata were developed from B. napus × B. carinata and B. juncea × B. carinata hybrids by recurrent backcrossing to the BC₇ generation. Sixteen populations from three generat ...
DOI:
10.1007/s10681-007-9424-4

77. 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

78. 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

79. Cultivated Helianthus annuus (Asteraceae) volunteers as a genetic "bridge" to weedy sunflower populations in North America

Author:
Reagon, Michael; Snow, Allison A.
Source:
American journal of botany 2006 v.93 no.1 pp. 127-133
ISSN:
0002-9122
Subject:
Helianthus annuus; sunflower seed; field crops; weeds; gene flow; pollen; seed dispersal; phenotype; flowering; phenology; genetic markers; seedlings; backcrossing; hybridization; Ohio
Abstract:
... In many crops, unharvested seeds can create populations of volunteer plants that increase opportunities for crop-to-wild gene flow. Pollen-mediated gene flow between cultivated and wild sunflower (both Helianthus annuus, Asteraceae) is well documented, but the role of seed dispersal and volunteers has not been investigated. We compared flowering times and other phenotypic traits of volunteers from ...
DOI:
10.3732/ajb.93.1.127

80. Genetic interactions in the control of flowering time and reproductive structure development in tomato (Solanum lycopersicum)

Author:
Muriel Quinet; Vincent Dielen; Henri Batoko; Marc Boutry; Andrée Havelange; Jean‐Marie Kinet
Source:
new phytologist 2006 v.170 no.4 pp. 701-710
ISSN:
0028-646X
Subject:
Solanum lycopersicum var. lycopersicum; tomatoes; mutants; genetic variation; phenotypic variation; inflorescences; flowering; plant reproduction; leaf development; backcrossing; sequence analysis; plant genetics
Abstract:
... • Different tomato (Solanum lycopersicum) mutants, affected in flowering time, reproductive structure or plant architecture, were crossed to produce double mutants in order to investigate gene interactions in flowering regulation in this autonomous species with a sympodial growth habit. • The compound inflorescence: uniflora, uniflora: self pruning, uniflora: blind, and jointless: uniflora double ...
DOI:
10.1111/j.1469-8137.2006.01717.x
PubMed:
16684232

81. Heritabilities and Correlations of Fusarium Ear Rot Resistance and Fumonisin Contamination Resistance in Two Maize Populations

Author:
Leilani A. Robertson; Craig E. Kleinschmidt; Don G. White; Gary A. Payne; Chris M. Maragos; James B. Holland
Source:
Crop science 2006 v.46 no.1 pp. 353-361
ISSN:
0011-183X
Subject:
backcrossing; Zea mays; flowering; grain crops; genetic resistance; phenology; Fusarium fujikuroi; corn; ear rot; phenotypic correlation; plant pathogenic fungi; disease resistance; fumonisins; genotype; genetic variation; heritability
Abstract:
... Fusarium verticillioides (Sacc.) Nirenberg (synonym F. moniliforme Sheldon) (teleomorph: Gibberella moniliformis) and F. proliferatum (Matsushima) Nirenberg (teleomorph: G. intermedia) are fungal pathogens of maize (Zea mays L.) that cause ear rot and contaminate grain with fumonisins, a family of mycotoxins that adversely affect animal and human health. The objective of this study was to estimate ...
Handle:
10113/3529
DOI:
10.2135/cropsci2005.0139

82. Population development by phenotypic selection with subsequent marker-assisted selection for line extraction in cucumber (Cucumis sativus L.)

Author:
Zhicheng Fan; Matthew D. Robbins; Jack E. Staub
Source:
Theoretical and applied genetics 2006 v.112 no.5 pp. 843-855
ISSN:
0040-5752
Subject:
backcrossing; plant breeding; marker-assisted selection; phenotype; flowering; Cucumis sativus; diameter; plant architecture; genetic improvement; cucumbers; female flowers; branching; length; artificial selection
Abstract:
... Cucumber (Cucumis sativus L.; 2n=2x=14) has a narrow genetic base, and commercial yield of US processing cucumber has plateaued in the last 15 years. Yield may be increased by altering plant architecture to produce unique early flowering (days to flower, DTF), female (gynoecious, GYN), highly branched (multiple lateral branching, MLB), long-fruited (length:diameter ratio, L:D) cultivars with diver ...
DOI:
10.1007/s00122-005-0186-x
PubMed:
16397790

83. Somatic hybridization between Solanum tuberosum and S. cardiophyllum

Author:
Shi, Y.Z.; Chen, Q.; Li, H.Y.; Beasley, D.; Lynch, D.R.
Source:
Canadian journal of plant science 2006 v.86 no.2 pp. 539-545
ISSN:
0008-4220
Subject:
flowering; Solanum tuberosum; Solanum cardiophyllum; potatoes; genetic markers; backcrossing; somatic hybridization; stems; fruit set; petioles; interspecific hybridization; wild relatives; random amplified polymorphic DNA technique; protoplast fusion; wide hybridization; chromosome number; plant genetic resources; endosperm; color; plant morphology
DOI:
10.4141/P05-076

84. Flowering response of rice to photoperiod and temperature: a QTL analysis using a phenological model

Author:
H. Nakagawa; J. Yamagishi; N. Miyamoto; M. Motoyama; M. Yano; K. Nemoto
Source:
Theoretical and applied genetics 2005 v.110 no.4 pp. 778-786
ISSN:
0040-5752
Subject:
Oryza sativa; backcrossing; early development; field experimentation; flowering; inbred lines; loci; models; photoperiod; quantitative trait loci; rice; temperature
Abstract:
... In this study we have attempted to quantify the thermal and photoperiodical responses of rice (Oryza sativa L.) flowering time QTLs jointly by a ‘date-of-planting’ field experiment of a mapping population, and a ‘phenological model’ analysis that separately parameterizes the two responses, based on daily temperature, daily photoperiod and flowering date. For this purpose, the ‘three-stage Beta mod ...
DOI:
10.1007/s00122-004-1905-4

85. Reproductive fitness of hybrids between Senecio jacobaea and S. aquaticus (Asteraceae)

Author:
Kirk, Heather; Vrieling, Klaas; Klinkhamer, Peter G. L.
Source:
American journal of botany 2005 v.92 no.9 pp. 1467-1473
ISSN:
0002-9122
Subject:
backcrossing; inflorescences; hybrids; flowering; pollen flow; plant fertility; gene flow; Jacobaea vulgaris; interspecific hybridization; seed productivity; Senecio
Abstract:
... Natural hybridization is increasingly recognized as an important process for the ecology and evolution of natural plant populations and species. There is a great need to initiate more studies based on natural populations in order to elucidate the possible role of hybrids in nature. The reproductive success of early generation hybrids can make or break hybrid lineages and may determine the genetic ...
DOI:
10.3732/ajb.92.9.1467
PubMed:
21646164

86. Brassica napus lines with rearranged Arabidopsis mitochondria display CMS and a range of developmental aberrations

Author:
M. Leino; R. Teixeira; M. Landgren; K. Glimelius
Source:
Theoretical and applied genetics 2003 v.106 no.7 pp. 1156-1163
ISSN:
0040-5752
Subject:
Arabidopsis thaliana; Brassica napus; backcrossing; calyx; corolla; cytoplasmic male sterility; flowering; hybrids; mitochondria; mitochondrial DNA; mitochondrial genome; nuclear genome; nuclear-cytoplasmic interactions; phenotype; pistil; plastid genome; restriction fragment length polymorphism; somatic hybridization; stamens
Abstract:
... Numerous Brassica napus (+) Arabidopsis thaliana somatic hybrids were screened for male sterility and aberrant flower phenotypes. Nine hybrids were selected and backcrossed recurrently to B. napus. The resulting lines displayed stable maternal inheritance of flower phenotypes. Nuclear and organellar genomes were characterized molecularly using RFLP analysis. No DNA from A. thaliana was found in th ...
DOI:
10.1007/s00122-002-1167-y

87. Controlled and open pollination between Pinus brutia (Ten.) and Pinus halepensis (Mill.) in Israel and hybrid performance

Author:
ANAT MADMONY; GABRIEL SCHILLER; YOSSI MOSHE; GALIT TSABARY; ZVI MENDEL; JOSEPH RIOV
Source:
Israel journal of plant sciences 2003 v.51 no.3 pp. 213-222
ISSN:
0792-9978
Subject:
Matsucoccus josephi; Mediterranean climate; Pinus brutia; Pinus halepensis; backcrossing; clones; environmental factors; flowering; germination; hybrids; open pollination; parents; seedlings; seeds; Israel
Abstract:
... The present study examined the occurrence of open and controlled pollination between Pinus brutia (Ten.) and Pinus halepensis (Mill.) under the environmental conditions of the East Mediterranean climate. Controlled interspecific pollination succeeded only with P. brutia as the maternal parent and P. halepensis as the paternal parent. Open interspecific pollination also occurred under Israeli condi ...
DOI:
10.1560/FNFR-JCUH-3EEA-0UGJ

88. Assessment of day-neutral backcross populations of cotton using AFLP markers

Author:
Zhong, M.; McCarty, J.C.; Jenkins, J.N.; Saha, S.
Source:
Journal of cotton science 2002 v.6 no.2 pp. -
ISSN:
1524-3303
Subject:
Gossypium hirsutum; cotton; photoperiodism; flowering; cultivars; plant breeding; backcrossing; introgression; genetic distance; genetic markers; amplified fragment length polymorphism
Abstract:
... The cotton (Gossypium hirsutum L.) collection of primitive accessions is underutilized for cotton improvement because they are photoperiodic. Day-neutrality can be achieved by crossing with a day-neutral cultivar and selection in the F2 generation. Our objective was to determine the relationship among four backcross generations and parents using amplified fragment length polymorphism (AFLP) marker ...
Handle:
10113/2844

89. Fitness of backcross six of hybrids between transgenic oilseed rape (Brassica napus) and wild radish (Raphanus raphanistrum)

Author:
Gueritaine, G.; Sester, M.; Eber, F.; Chevre, A.M.; Darmency, H.
Source:
Molecular ecology 2002 v.11 no.8 pp. 1419-1426
ISSN:
0962-1083
Subject:
height; plant characteristics; Brassica napus; transgenic plants; Raphanus raphanistrum; wild relatives; weeds; interspecific hybridization; backcrossing; hybrids; herbicide resistance; glufosinate; genes; seedling emergence; seedling growth; mortality; flowering; chromosome number; fields; interspecific competition; male fertility; pollen; gene flow; edge effects
DOI:
10.1046/j.1365-294X.2002.01540.x
PubMed:
12144662

90. Registration of 16 day length-neutral flowering primitive cotton germplasm lines

Author:
McCarty, J.C. Jr.; Jenkins, J.N.
Source:
Crop science 2002 v.42 no.5 pp. 1755-1756
ISSN:
0011-183X
Subject:
Gossypium hirsutum; photoperiod; flowering; backcrossing; crop quality; plant genetic resources; germplasm; agronomic traits; crop yield; Mississippi

91. Alteration of the genomic composition of Solanum nigrum (+) potato backcross derivatives by somatic hybridization: selection of fusion hybrids by DNA measurements and GISH

Author:
Horsman, K.; Gavrilenko, T.; Bergervoet, M.; Huigen, D.J.; Joe, A.T.W.; Jacobsen, E.
Source:
Plant breeding 2001 v.120 no.3 pp. 201-207
ISSN:
0179-9541
Subject:
Solanum nigrum; Solanum tuberosum; interspecific hybridization; backcrossing; somatic hybridization; protoplast fusion; hybrids; flow cytometry; chromosome number; fruit set; flowering; diploidy; tetraploidy; nucleic acid hybridization; genotype
Abstract:
... Fusion experiments were performed with a first (BC1-6738) and a second (BC2-9017) generation backcross hybrid of 6x Solanum nigrum (+) 2x potato somatic hybrids with potato cultivars. Because no progeny was obtained from the BC2 genotypes, alternative approaches were sought to overcome the sexual crossing barrier. Five potato genotypes, one of which contains the hygromycin resistance gene, were us ...
DOI:
10.1046/j.1439-0523.2001.00591.x

92. Genotype × Environment Interactions in Maize Hybrids from Temperate or Highland Tropical Origin

Author:
C. Giauffret; J. Lothrop; D. Dorvillez; B. Gouesnard; M. Derieux
Source:
Crop science 2000 v.40 no.4 pp. 1004-1012
ISSN:
0011-183X
Subject:
Zea mays; backcrossing; breeding programs; cold tolerance; corn; disease resistance; flowering; genotype; genotype-environment interaction; germplasm; grain yield; heritability; introduced species; leaf area; leaves; marker-assisted selection; plant breeding; temperate zones; temperature; tropical plants
Abstract:
... Exotic germplasm is often used in maize (Zea mays L.) breeding programs. However, the occurrence of genotype × environment interactions (GEIs) may mask the potential utility of exotic material. Our objective was to understand better GEIs for temperate, temperate × highland, and highland tropical maize genotypes cultivated under temperate or highland tropical conditions. We related yield instabilit ...
DOI:
10.2135/cropsci2000.4041004x

93. Morphological characterization of modified flower morphology of three novel alloplasmic male sterile carrot sources

Author:
Linke, B.; Nothnagel, T.; Borner, T.
Source:
Plant breeding 1999 v.118 no.6 pp. 543-548
ISSN:
0179-9541
Subject:
cytoplasmic male sterility; backcrossing; flowering; morphogenesis; Daucus carota; flowers; stamens; phenotypic variation; wild relatives; plant morphology; cytoplasmic inheritance
Abstract:
... Three novel sources of cytoplasmic male sterility (CMS) in carrot are characterized by altered flower phenotypes. Flowers were classified into subtypes, according to stamen (and petal) modification. Flower anatomy was investigated by light microscopy to describe organ modification and to specify the timing when morphology begins to deviate. Early stages of floral development were defined in fertil ...
DOI:
10.1046/j.1439-0523.1999.00402.x

94. Rapid flowering Nicotiana tabacum L

Author:
McDaniel, C.N.
Source:
Sexual plant reproduction 1999 v.12 no.2 pp. 123-124
ISSN:
0934-0882
Subject:
backcrossing; flowering; phenology; Nicotiana tabacum; plant genetic resources; genetic engineering; genotype; selfing; life cycle (organisms)
DOI:
10.1007/s004970050181

95. Successful first and second backcrosses of S. nigrum (+) S. tuberosum somatic hybrids with both Solanum parents

Author:
Horsman, K.; Fratini, R.; Huigen, D.J.; Jacobsen, E.
Source:
Sexual plant reproduction 1999 v.12 no.3 pp. 144-151
ISSN:
0934-0882
Subject:
Solanum nigrum; Solanum tuberosum; somatic hybridization; progeny; tetraploidy; seeds; pollination; ovules; ovule culture; vigor; flowering; germination; Phytophthora infestans; disease resistance; interspecific hybridization; backcrossing; genotype; fungal diseases of plants
DOI:
10.1007/s004970050185

96. Somatic hybridization between Solanum tuberosum and species of the S. nigrum complex: Selection of vigorously growing and flowering plants

Author:
K. Horsman; J.E.M. Bergervoet; E. Jacobsen
Source:
Euphytica 1997 v.96 no.3 pp. 345-352
ISSN:
0014-2336
Subject:
DNA; Solanum nigrum; Solanum tuberosum; backcrossing; diploidy; flowering; genotype; greenhouses; hybrids; introgression; kanamycin; plant breeding; potatoes; somatic hybridization; tetraploidy
Abstract:
... Fusion experiments were performed between diploid (2n = 2x = 24) or tetraploid (2n = 4x = 48) potato genotypes and four species of the Solanum nigrum complex, namely S. nigrum (2n = 6x = 72), S. villosum (2n = 4x = 48), S. chenopodioides (2n = 2x = 24) or S. americanum (2n = 2x = 24 and 2n = 6x = 72). All five accessions of the S. nigrum-species were successfully hybridized with at least one of th ...
DOI:
10.1023/A:1003038419126

97. Successful backcrosses of somatic hybrids between Sinapis alba and Brassica oleracea with the Brassica oleracea parent

Author:
Nothnagel, T.; Budahn, H.; Straka, P.; Schrader, O.
Source:
Plant breeding 1997 v.116 no.1 pp. 89-97
ISSN:
0179-9541
Subject:
Sinapis alba; Brassica oleracea; somatic hybridization; intergeneric hybridization; backcrossing; cytoplasmic inheritance; mitochondrial DNA; chromosome number; introgression; flowering; abnormal development; chloroplast DNA; chromosome pairing
DOI:
10.1111/j.1439-0523.1997.tb00981.x

98. Inheritance of Heat Tolerance during Pod Set in Cowpea

Author:
K. O. Marfo; A. E. Hall
Source:
Crop science 1992 v.32 no.4 pp. 912-918
ISSN:
0011-183X
Subject:
backcrossing; Vigna unguiculata; flowering; hybrids; heat tolerance; genotype; inheritance (genetics); heritability; selection criteria; pods; California
Abstract:
... The productivity of cowpea (Vigna unguiculata (L.) Walp.] can be reduced substantially by hot weather during flowering. Inheritance and heritability of tolerance to heat during reproductive development were studied to develop efficient methods for breeding improved cultivars. Heat tolerant (‘Prima’ and TVu 4552) and heat sensitive (Barnbey 23, ‘Magnolia’ and 7964) cowpea genotypes were chosen for ...
DOI:
10.2135/cropsci1992.0011183X003200040015x

99. Inheritance of photoperiod-induced flowering in three photoperiodic lines of Aeschynomene americana L

Author:
Deren, C.W.; Quesenberry, K.H.
Source:
Theoretical and applied genetics 1989 v.78 no.6 pp. 825-830
ISSN:
0040-5752
Subject:
Aeschynomene americana; backcrossing; flowering; epistasis; genetic engineering; genetic techniques and protocols; photoperiod; genetic variation; inheritance (genetics); reciprocal crosses; Florida
DOI:
10.1007/BF00266665
PubMed:
24226013

100. Agronomic, Chemical, and Smoke Characteristics of Flue-cured Tobacco Lines with Different Levels of Total Alkaloids

Author:
James F. Chaplin; L. G. Burk
Source:
Agronomy journal 1984 v.76 no.1 pp. 133-136
ISSN:
0002-1962
Subject:
Nicotiana tabacum; backcrossing; cigarettes; cultivars; dihaploidy; flavor; flowering; flue-cured tobacco; leaves; nicotine; nornicotine; parents; physicochemical properties; plant height; reducing sugars; smoke; taste
Abstract:
... Total alkaloids (predominately nicotine) are important constitutents in flue-cured tobacco (Nicotiana tabacum L.). Due to varying nicotine levels in cigarettes, it is of interest to see what effect varying alkaloid levels in tobacco have on certain agronomic and chemical characteristics of the cured leaf. Experiments were conducted at two locations to develop lines of flue-cured tobacco with diffe ...
DOI:
10.2134/agronj1984.00021962007600010032x