3种不同环境水稻糙米粒重QTL定位研究  

Research on Mapping of Brown Rice Grain Weight QTLs under Three Different Environments

作　　者：彭强 李祖军 徐海峰 朱速松[1] PENG Qiang;LI Zujun;XU Haifeng;ZHU Susong(Rice Research Institute of Guizhou Academy of Agricultural Sciences,Guiyang 550006,China)

机构地区：[1]贵州省农业科学院水稻研究所,贵阳550006

出　　处：《种子》2023年第1期105-109,共5页Seed

基　　金：黔水稻所青年基金[2021]005号;贵州省省级财政资金种业发展项目;国家自然科学基金委员会-贵州省人民政府喀斯特科学研究中心项目(U1812401)。

摘　　要：为获得糙米粒重性状QTL,本研究以V 20 B/CPSLO 17遗传背景衍生的150份重组自交家系作为作图群体,在3种环境下分别进行糙米粒重性状QTL检测及其遗传效应分析。结果表明,3种环境共发现6个不同的糙米粒重QTL,其LOD值在2.629~6.721之间,表型贡献率变幅为7.306%~17.070%。QTL qRTGW5-2具有较大遗传效应,表型变异贡献率高达17.070%,LOD值为6.721;qRTGW5-2的加性效应源自亲本V 20 B。To obtain the QTL of brown rice grain weight traits,a mapping population of 150 recombination inbred lines which derived from V 20 B/CPSLO 17 genetic background,was applied to analyse QTL location and genetic effects of brown rice grain weight traits under three different environmental conditions.The results showed that a total of six QTLs for rice grain weight traits were found in three environments,their LOD values ranged from 2.629 to 6.721,and the phenotype contribution rate varied from 7.306%to 17.070%.The QTL qRTGW5-2 with major genetic effects,which contributed 17.070%to the phenotypic variances.The LOD values of qRTGW5-2 was 6.721.The additive effect of qRTGW5-2 was derived from the parent V 20 B.

关 键 词：水稻 遗传背景 连锁图谱 QTL 表型贡献率 

分 类 号：S511[农业科学—作物学]