Breeding Potential of Introgression Lines Developed from Interspecific Crossing between Upland Cotton (Gossypium hirsutum) and Gossypium barbadense: Heterosis, Combining Ability and Genetic Effects

Upland cotton (Gossypium hirstum L.), which produces more than 95% of the world natural cotton fibers, has a narrow genetic base which hinders progress in cotton breeding. Introducing germplasm from exotic sources especially from another cultivated tetraploid G. barbadense L. can broaden the genetic...

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Bibliographic Details
Published in:PloS one 2016, Vol.11 (1), p.e0143646-e0143646
Main Authors: Zhang, Jinfa, Wu, Man, Yu, Jiwen, Li, Xingli, Pei, Wenfeng
Format: Article
Language:English
Subjects:
Agricultural production
Biology
Breeding
Combining ability
Cotton
Cotton Fiber
Cotton fibers
Crosses, Genetic
Cultivars
Fibers
Genetic diversity
Genetic effects
Genotype & phenotype
Germplasm
Gossypium - chemistry
Gossypium - classification
Gossypium - genetics
Gossypium barbadense
Gossypium hirsutum
Gossypol - analysis
Heterosis
Hybrid Vigor
Hybridization, Genetic
Hybrids
Information processing
Interspecific
Laboratories
Maternal effects
Parameter estimation
Parents
Plant Breeding
Plant Oils - analysis
Plant Proteins - analysis
Plant reproduction
Quality
Quality control
Quantitative genetics
Seeds
Seeds - chemistry
Species Specificity
Textile industry
Vigor
Yield
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Summary:Upland cotton (Gossypium hirstum L.), which produces more than 95% of the world natural cotton fibers, has a narrow genetic base which hinders progress in cotton breeding. Introducing germplasm from exotic sources especially from another cultivated tetraploid G. barbadense L. can broaden the genetic base of Upland cotton. However, the breeding potential of introgression lines (ILs) in Upland cotton with G. barbadense germplasm integration has not been well addressed. This study involved six ILs developed from an interspecific crossing and backcrossing between Upland cotton and G. barbadense and represented one of the first studies to investigate breeding potentials of a set of ILs using a full diallel analysis. High mid-parent heterosis was detected in several hybrids between ILs and a commercial cultivar, which also out-yielded the high-yielding cultivar parent in F1, F2 and F3 generations. A further analysis indicated that general ability (GCA) variance was predominant for all the traits, while specific combining ability (SCA) variance was either non-existent or much lower than GCA. The estimated GCA effects and predicted additive effects for parents in each trait were positively correlated (at P
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0143646