title: Genetic Effects and Heterosis of Yield and Yield Component Traits Based on Gossypium Barbadense Chromosome Segment Substitution Lines in Two Gossypium Hirsutum Backgrounds.
abstract: We hybridized 10 chromosome segment substitution lines (CSSLs) each from two CSSL populations and produced 50 F1 hybrids according to North Carolina Design II. We analyzed the genetic effects and heterosis of yield and yield components in the F1 hybrids and parents in four environments via the additive-dominance genetic model. Yield and yield components of the CSSLs were controlled by combined additive and dominance effects, and lint percentage was mainly controlled by additive effects, but boll weight, boll number, seedcotton yield and lint yield were mainly controlled by dominance effects. We detected significant interaction effects between genetics and the environment for all yields traits. Similar interactions were detected between two CSSL populations (Pop CCRI 36 and Pop CCRI 45). Significant positive mid-parent heterosis was detected for all yield traits in both populations, and significant positive better-parent heterosis was also detected for all yield traits except lint percentage. The differences among parents were relatively small, but significant heterosis was detected for yield and yield components. Therefore, the relationship between heterosis and genetic distance for yield traits is complicated and requires further study. These CSSLs represent useful tools for improving yield and yield components in cotton.
authors.affiliation: Institute of Cotton Research, Chinese Academy of Agricultural Sciences/ State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Anyang, Henan 455000, China.|Changde Agricultural Science Research Institute, Changde, Hunan 415000, China.
authors.forename: Botao
authors.initials: B
authors.lastname: Li
authors.affiliation: Institute of Cotton Research, Chinese Academy of Agricultural Sciences/ State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Anyang, Henan 455000, China.
authors.forename: Yuzhen
authors.initials: Y
authors.lastname: Shi
authors.affiliation: Institute of Cotton Research, Chinese Academy of Agricultural Sciences/ State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Anyang, Henan 455000, China.
authors.forename: Juwu
authors.initials: J
authors.lastname: Gong
authors.affiliation: Institute of Cotton Research, Chinese Academy of Agricultural Sciences/ State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Anyang, Henan 455000, China.
authors.forename: Junwen
authors.initials: J
authors.lastname: Li
authors.affiliation: Institute of Cotton Research, Chinese Academy of Agricultural Sciences/ State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Anyang, Henan 455000, China.
authors.forename: Aiying
authors.initials: A
authors.lastname: Liu
authors.affiliation: Institute of Cotton Research, Chinese Academy of Agricultural Sciences/ State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Anyang, Henan 455000, China.
authors.forename: Haihong
authors.initials: H
authors.lastname: Shang
authors.affiliation: Institute of Cotton Research, Chinese Academy of Agricultural Sciences/ State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Anyang, Henan 455000, China.
authors.forename: Wankui
authors.initials: W
authors.lastname: Gong
authors.affiliation: Institute of Cotton Research, Chinese Academy of Agricultural Sciences/ State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Anyang, Henan 455000, China.
authors.forename: Tingting
authors.initials: T
authors.lastname: Chen
authors.affiliation: Institute of Cotton Research, Chinese Academy of Agricultural Sciences/ State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Anyang, Henan 455000, China.
authors.forename: Qun
authors.initials: Q
authors.lastname: Ge
authors.affiliation: Zhoukou Academy of Agricultural Sciences, Zhoukou, Henan 466001, China.
authors.forename: Chaoyang
authors.initials: C
authors.lastname: Jia
authors.affiliation: Zhoukou Academy of Agricultural Sciences, Zhoukou, Henan 466001, China.
authors.forename: Yake
authors.initials: Y
authors.lastname: Lei
authors.affiliation: Liaoning Provincial Institute of Cash Crops, Liaoyang, Liaoning 111000, China.
authors.forename: Yushu
authors.initials: Y
authors.lastname: Hu
authors.affiliation: Institute of Cotton Research, Chinese Academy of Agricultural Sciences/ State Key Laboratory of Cotton Biology, Key Laboratory of Biological and Genetic Breeding of Cotton, The Ministry of Agriculture, Anyang, Henan 455000, China.
authors.forename: Youlu
authors.initials: Y
authors.lastname: Yuan
mesh_terms: D032461:Chromosomes, Plant / Q000235:genetics*; D000068617:Genetic Background; D003368:Gossypium / Q000235:genetics* / Q000254:growth & development; D006823:Hybrid Vigor; D009154:Mutation; D000069600:Plant Breeding / Q000379:methods; D019655:Quantitative Trait, Heritable