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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. 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

4. 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

5. 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

6. 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

7. 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

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. 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

10. 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

11. 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

12. 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

13. 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

14. 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

15. 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

16. 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

17. 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

18. 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

19. 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

20. 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

21. 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

22. 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

23. 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

24. 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

25. 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

26. 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

27. 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

28. 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

29. 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

30. 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 ...

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. 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

37. 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

38. 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

39. 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

40. 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

41. 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

42. 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

43. 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

44. 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

45. 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

46. 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

47. 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

48. 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

49. 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

50. 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