水稻抽穗期性状QTL的全基因组关联定位分析  

Genome-wide association dissection of QTLs for heading date traits in rice

作　　者：林晋军 姚威 彭沙莎 刘文韬 陈文凤 白宇龙 瞿媛 刘雄伦[1,2] 刘金灵[1,2] LIN Jinjun;YAO Wei;PENG Shasha;LIU Wentao;CHEN Wenfeng;BAI Yulong;QU Yuan;LIU Xionglun;LIU Jinling(College of Agronomy,Hunan Agricultural University,Changsha,Hunan 410128,China;Hunan Provincial Key Laboratory of Crop Gene Engineering,Changsha,Hunan 410128,China)

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]作物基因工程湖南省重点实验室,湖南长沙410128

出　　处：《湖南农业大学学报（自然科学版）》2021年第3期283-290,共8页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：湖南省重大科技专项(2015NK1001–1);湖南农业大学人才引进计划(14YJ01);湖南省作物种质创新与资源利用重点实验室科学基金项目(18KFXM01)。

摘　　要：以253份水稻种质为材料,评价了群体材料的抽穗期特性,利用全基因组关联分析法对水稻抽穗期相关数量性状位点(QTL)进行定位。结果表明:种质群体抽穗期为45~100d,变异系数为13.12%~13.39%,广义遗传率为50.94%;全基因组关联分析定位了29个与抽穗期相关的QTL,共60个显著关联SNP;预测15个QTL有23个与抽穗期调控相关的候选基因,分别编码类似于成花素的磷脂酰乙醇胺结合蛋白、C2H2/CCCH/B-box类锌指蛋白和MYB/MADS/PHD-finger/AP2类转录因子。253 rice germplasm accessions from worldwide were used to evaluate the phenotype variation of heading date,and detect quantitative trait locus(QTL)responsible for heading date.The results revealed that the heading date of the rice accessions varied from 45-100 days with a variation coefficient of 13.12%-13.39%and a broad heritability of 50.94%.And,60 significant associated SNPs responding to 29 QTLs for heading date were detected with genome-wide association analysis(GWAS)method.23 candidate genes within 15 QTLs intervals possibly associated with heading date were predicted,of which encodes the putative proteins including plant florin-like phosphatidylethanolamine binding protein,zinc finger proteins with the motif of C2H2/CCCH/B-box,and transcription factors containing MYB/MADS/PHD-finger/AP2 domains.

关 键 词：水稻 抽穗期 数量性状位点 全基因组关联分析 

分 类 号：S511.01[农业科学—作物学]