植物遗传资源学报2026，Vol.27Issue(2)：407-423,17.DOI:10.13430/j.cnki.jpgr.20251005001
基于黄褐棉导入系群体定位棉花纤维品质和产量性状QTLs
Mapping QTLs Related to Fiber Quality and Yield Traits of Cotton Based on Imported Lines of Gossypium mustelinum
摘要
Abstract
To harness elite geneticresources from Gossypium mustelinum L.for the genetic improvement of upland cotton,a backcross introgression line(BC5S5)population comprising 71 lines was developed.This population was derived using Gossypium hirsutum B0011 as the recurrent parent and G.mustelinum as the donor parent.Phenotypic evaluation and quantitative trait locus(QTL)mapping were conducted for eight fiber quality traits(fiber length,fiber strength,micronaire value,maturity of cotton fiber,fiber uniformity,short fiber content,fiber elongation,and the water content)and three yield traits(lint weight,single boll weight,and lint percentage).The results indicated that lint weight and short fiber content are strongly influenced by genotype,while fiber length,fiber strength,fiber uniformity,fiber elongation,micronaire value,and lint percentage are more significantly affected by environmental conditions.Maturity of cotton fiber and water content are more affected by genotype×environment interaction than genotype.Most yield traits show weak correlations with fiber quality traits,but single boll weight and lint percentage are still significantly influenced by fiber quality traits.Among these,single boll weight exhibits significant correlations with micronaire value and fiber elongation,while lint percentage shows a significant correlation with water content.A total of 80 QTLs were identified,including 63 associated with fiber quality and 17 with yield traits,distributed across 21 chromosomes.A high proportion of these QTLs exhibited high contribution rates,with over 80％ having a LOD value greater than 3.00 and high linkage recombination rates.Notably,five QTLs(qLW-A06-1,qMCF-A12-1,qFS-A13-1,qSW-A10-1,and qSW-D06-1)were stably detected across multiple environments.Furthermore,four pleiotropic loci(A10:88383565,D06:36287101,D06:55819963,and D13:60179605)were identified,all linked to short fiber content(SFC).Eight QTL clusters were detected on chromosomes A01(two clusters),A10(two),A13(one),D04(one),and D06(two),each regulating multiple fiber quality and yield traits.The results of this study provide potential application value for cotton molecular breeding practice.关键词
棉花/纤维品质/产量/多效性位点/QTL簇Key words
cotton/fiber quality/yield/pleiotropic sites/QTL cluster引用本文复制引用
拓明喆,徐建伟,吴元龙,聂新辉,常鑫燚,卫雅亭,张子昕,阿布都克尤木·阿不都热孜克,徐麟,尤春源,李志博,林海荣..基于黄褐棉导入系群体定位棉花纤维品质和产量性状QTLs[J].植物遗传资源学报,2026,27(2):407-423,17.基金项目
国家重点研发计划(2023YFD2301203-05) （2023YFD2301203-05）
国家自然科学基金(32260510) （32260510）
新疆维吾尔自治区科学技术厅重大科技专项(2022A03004) （2022A03004）
新疆维吾尔自治区现代农业(棉花)产业技术体系(XJARS-03-16) （棉花）
八师石河子市财政科技计划项目(2022NY01)National Key Research and Development Program of China(2023YFD2301203-05) （2022NY01）
National Natural Science Foundation of China(32260510) （32260510）
Science and Technology Major Project of the Department of Science and Technology of Xinjiang Uygur Autonomous Region(2022A03004) （2022A03004）
Xinjiang Agriculture Research System(XJARS-03-16) （XJARS-03-16）
The Science and Technology Project of Shihezi City,Eighth Division Finance Department(2022NY01) （2022NY01）
