Mapping QTLs for fiber-and seed-related traits in Gossypium tomentosum CSSLs with a G.hirsutum background  

作　　者：Yongshui Hao Xueying Liu Qianqian Wang Shuxin Wang Qingqing Li Yaqing Wang Zhongni Guo Tiantian Wu Qing Yang Yuting Bai Yuru Cui Peng Yang Wenwen Wang Zhonghua Teng Dexin Liu Kai Guo Dajun Liu Jian Zhang Zhengsheng Zhang 

机构地区：[1]Engineering Research Center of South Upland Agriculture,Ministry of Education,Chongqing 400715,China

出　　处：《Journal of Integrative Agriculture》2025年第2期467-479,共13页农业科学学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(32172064)。

摘　　要：Introducing the inherent genetic diversity of wild species into cultivars has become one of the hot topics in crop genetic breeding and genetic resource research.Fiber-and seed-related traits,which are critical to the global economy and people's livelihoods,are the principal focus of cotton breeding.Here,the wild cotton species Gossypium tomentosum was used to broaden the genetic basis of G.hirsutum and identify QTLs for fiber-and seed-related traits.A population of 559 chromosome segment substitution lines(CSSLs)was established with various chromosome segments from G.tomentosum in a G.hirsutum cultivar background.Totals of 72,89,and 76 QTLs were identified for three yield traits,five fiber quality traits,and six cottonseed nutrient quality traits,respectively.Favorable alleles of 104 QTLs were contributed by G.tomentosum.Sixty-four QTLs were identified in two or more environments,and candidate genes for three of them were further identified.The results of this study contribute to further studies on the genetic basis of the morphogenesis of these economic traits,and indicate the great breeding potential of G.tomentosum for improving the fiber-and seed-related traits in G.hirsutum.

关 键 词：Gossypium tomentosum chromosome segment substitution lines yield fiber quality cottonseed nutrient quality 

分 类 号：S562[农业科学—作物学]