水稻籼粳杂种育性的QTL分析  

QTL Analysis for Fertility of Indica-Japonica Hybrids in Rice

作　　者：林荔辉[1] 王爱梅[1] 周元昌[1] 官华忠[1] 蒋云林[1] 吴建梅[1] 吴为人[2] 

机构地区：[1]福建农林大学作物科学学院,福建福州350002 [2]福建农林大学生命科学学院,福建福州350002

出　　处：《中国水稻科学》2011年第6期594-598,共5页Chinese Journal of Rice Science

基　　金：福建省教育厅重点资助项目(JK2009011);福建省科技厅重大专项资助项目(2008NZ0201)

摘　　要：以籼稻保持系珍汕97B和粳稻保持系辽91B为亲本,构建了一个包含176个单株的F2群体及123个SSR标记的遗传图谱,在3种环境下联合检测控制花粉育性和小穗育性的QTL。共检测到3个控制花粉育性的主效应(加性效应和显性效应)QTL(qPF3、qPF5和qPF6)和4个控制小穗育性的主效应QTL(qSF3、qSF5、qSF6和qSF8),其中qPF5与qSF5、qPF6与qSF6均为同一个QTL,为重要的育性QTL。另外,检测到3对花粉育性和4对小穗育性QTL间互作,说明上位性效应对籼粳杂交后代的育性具有重要作用。An F2 population consisting of 176 individuals was developed from a cross between an indica maintainer line Zhenshan 97B and a japonica maintainer line Liao 91B and a genetic map containing 123 SSR markers was constructed based on the population.Pollen fertility and spikelet fertility were investigated in three seasons.Three main-effect（additive effect and dominant effect） quantitative trait loci（QTLs） for pollen fertility（qPF3,qPF5 and qPF6） and four main-effect QTLs for spikelet fertility（qSF3,qSF5,qSF6 and qSF8） were detected.Among them,qPF6 and qSF6,and qPF5 and qSF5,important QTLs for rice fertility,were mapped on the same locations.In addition,three pairs of QTL interaction for pollen fertility and four pairs for spikelet fertility were detected,suggesting that epistatic effects play important roles in the fertility of indica-japonica hybrids.

关 键 词：水稻 籼粳杂种 数量性状基因座 花粉育性 小穗育性 

分 类 号：S511[农业科学—作物学]