杂交水稻2025，Vol.40Issue(4)：26-32,7.DOI:10.16267/j.cnki.1005-3956.20241123.255
全基因组关联分析热带稻区水稻外观品质相关性状的QTL
Genome-wide Association Study of QTLs for Appearance Quality Traits in Tropical Rice
摘要
Abstract
The appearance quality is a key determinant of the market value of rice.In this study,six appearance quality traits,including grain length,grain width,length-to-width ratio,chalkiness degree,chalky grain rate and translucency degree of milled rice,were measured for 332 tropical rice germplasm accessions across two growing seasons in two years.Based on the rice genotype data obtained by the 40 K SNP liquid-phase chip,a mixed linear model(Q+K)was employed for the genome-wide association study(GWAS).The results showed that a total of 17 quantitative trait loci(QTLs)associated with rice appearance quality were identified.Among them,seven QTLs showed pleiotropic effects on two or three traits.Eleven QTLs were consistently detected in both seasons,and six QTLs were located in or near the regions harboring previously cloned grain shape-related genes.These findings provide new insights into the genetic basis of rice appearance quality and offer valuable resources for gene mining and molecular breeding.关键词
热带稻区/水稻种质/外观品质/全基因组关联分析/QTLKey words
tropical rice-growing region/rice germplasm/appearance grain quality/genome-wide association study/QTL分类
农业科技引用本文复制引用
刘法谋,黄智,郭梁,杜应超,邹林静,李达成..全基因组关联分析热带稻区水稻外观品质相关性状的QTL[J].杂交水稻,2025,40(4):26-32,7.基金项目
援埃塞俄比亚农业职业教育第三期技术援助项目[(2021)商合促技字第37号] （2021）
