Quantitative Trait Locus Analysis and Identification of Candidate Genes for Micronaire in an Interspecific Backcross Inbred Line Population of Gossypium hirsutum x Gossypium barbadense
文献类型: 外文期刊
第一作者: Pei, Wenfeng
作者: Pei, Wenfeng;Song, Jikun;Jia, Bing;Chen, Quanjia;Yu, Jiwen;Qu, Yanying;Wang, Wenkui;Ma, Jianjiang;Wu, Luyao;Wu, Man;Qin, Qin;Zhu, Haiyong;Hu, Chengcheng;Lei, Hai;Gao, Xuefei;Hu, Haijun;Zhang, Yu;Zhang, Jinfa
作者机构:
关键词: Gossypium hirsutum; Gossypium barbadense; backcross inbred lines; micronaire; quantitative trait locus
期刊名称:FRONTIERS IN PLANT SCIENCE ( 影响因子:5.754; 五年影响因子:6.612 )
ISSN: 1664-462X
年卷期: 2021 年 12 卷
页码:
收录情况: SCI
摘要: Cotton is the most important fiber crop and provides indispensable natural fibers for the textile industry. Micronaire (MIC) is determined by fiber fineness and maturity and is an important component of fiber quality. Gossypium barbadense L. possesses long, strong and fine fibers, while upland cotton (Gossypium hirsutum L.) is high yielding with high MIC and widely cultivated worldwide. To identify quantitative trait loci (QTLs) and candidate genes for MIC in G. barbadense, a population of 250 backcross inbred lines (BILs), developed from an interspecific cross of upland cotton CRI36 x Egyptian cotton (G. barbadense) Hai7124, was evaluated in 9 replicated field tests. Based on a high-density genetic map with 7709 genotyping-by-sequencing (GBS)-based single-nucleotide polymorphism (SNP) markers, 25 MIC QTLs were identified, including 12 previously described QTLs and 13 new QTLs. Importantly, two stable MIC QTLs (qMIC-D03-2 on D03 and qMIC-D08-1 on D08) were identified. Of a total of 338 genes identified within the two QTL regions, eight candidate genes with differential expression between TM-1 and Hai7124 were identified. Our research provides valuable information for improving MIC in cotton breeding.
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