贵州农业科学2026，Vol.54Issue(8)：42-48,7.DOI:10.3969/j.issn.1001-3601.2026.08.005
基于重测序定位特色稻贵州禾RIL群体粒型性状QTL
QTL Analysis for Grain Traits of Recombinant Inbred Line Population of Specialty Rice Guizhouhe Based on Resequencing Technology
摘要
Abstract
[Objective]The QTL loci related to grain traits of Guizhouhe were probed by constructing rice recombinant inbred lines population to provide a theoretical basis for analyzing the grain formation mechanism of Guizhouhe and rice breeding.[Method]The QTLs related to grain traits of Guizhouhe were detected by using a high-density genetic map built from the rice recombinant inbred line population of Goudang 3(special rice Guizhouhe)×Huazhan(a quality restorer)based on the two-year's phenotype data.[Result]A total of seven QTLs in RIL population were detected and located on chromosome 1,2 and 5,and their LOD value and contribution rate were 3.29-15.98 and 7.67%-37.03%,respectively.Three QTLs loci related to grain width trait were qGW-2,qGW-5-1 and qGW-5-2.Four QTLs loci related to thousand-grain weight trait were qTGW-1-1,qTGW-5-1,qTGW-1-2 and qTGW-5-2.Other 5 QTLs might be new loci including qGW-2(related to grain width)and qTGW-1-1,qTGW-5-1,qTGW-1-2 and qTGW-5-2(related to thousand-grain weight).The qGW-2 was detected for two consecutive years.[Conclusion]Three QTLs(qGW-2,qGW-5-1 and qGW-5-2)related to grain width,and four QTLs(qTGW-1-1,qTGW-5-1,qTGW-1-2 and qTGW-5-2)related to thousand-grain weight are detected from the RIL population of Goudang 3(special rice Guizhouhe)×Huazhan(a quality restorer).The qGW-5-1 gene is involved in regulation of grain length,grain width and grain thickness and the qGW-5-2 is involved in regulation of grain width.The qGW-2,qTGW-1-1,qTGW-5-1,qTGW-1-2 and qTGW-5-2 are five new QTLs.关键词
贵州禾/水稻/粒型/QTL/重组自交系群体Key words
Guizhouhe/rice/grain type/QTL/recombinant inbred line population分类
农业科技引用本文复制引用
吴朝昕,姜雪,刘雪薇,李文扣,吴娴,王倩,徐海峰,龙武华,朱速松..基于重测序定位特色稻贵州禾RIL群体粒型性状QTL[J].贵州农业科学,2026,54(8):42-48,7.基金项目
贵州省科技计划项目(黔科合支撑[2019]2304号)(黔科合支撑[2022]重点028) （黔科合支撑[2019]2304号）
贵州省育种科研基础平台创新能力建设(黔科合服企[2022]014) （黔科合服企[2022]014）
喀斯特山区特色作物生物育种创新能力建设(黔科合服企[2024]003-1) （黔科合服企[2024]003-1）
贵州省农业科学院财政专项项目(黔农科院种质资源[2023]11号) （黔农科院种质资源[2023]11号）
