不同环境条件下水稻株高的QTL定位分析  

Mapping of Quantitative Traits Loci for Plant Height of Rice under Different Environments

作　　者：叶少平[1] 李杰勤[1] 张启军[1] 赵兵[1] 李平[1] 

机构地区：[1]四川农业大学水稻研究所

出　　处：《四川农业大学学报》2006年第1期20-24,共5页Journal of Sichuan Agricultural University

基　　金：国家863计划资助项目(2003AA212030)。

摘　　要：用水稻测序品种培矮64s和Nipponbare为亲本构建的含137个SSR标记的连锁遗传图谱和(培矮64s/Nipponbare)F2、F2∶3群体的180个单株(株系)对水稻的株高性状进行了2年2点的QTL定位分析。2年2点共检测到8个QTL分别位于第1、2、3、4、5、7、10染色体,表型贡献率6.9%～47.7%。F2群体(成都试点)共检测到6个QTL,分布在第1、1、3、4、5、7染色体上,F2∶3群体(海南试点)共检测到4个QTL,分布在第1、2、4、10染色体上,其中位于第1、4染色体上的qPH1-2和qPH4为重复检测到的QTL。对所定位QTL的价值、用QTL定位预测基因的功能等进行了探讨。Quantitative trait loci （QTL） for plant height of rice were mapped under two envirorments in 2003 and 2004 by means of F2 and F2：3 populations consisted of 180 plants （lines） from the cross between two genome sequenced rice varieties ＂Peiai64s＂ and ＂Nipponbare＂, and a genetic linkage map including 137 SSR markers constituted by （Peiai 64s/Nipponbare） F2 population. A total of eight QTLs for plant height were identified in chromosmes 1, 2, 3, 4, 5, 7 and 10, with 6.9%-47.7% of phenotypic percentage of eontribution; Six QTLs were identified in chromosomes 1, 1, 3, 4, 5 and 7 in F2 population in Chengdu, and four QTLs in chromosomes 1, 2, 4 and 10 in F2：3 population in Hainan. In these QTLs, two QTLs qPH1 - 2 and qPH4 located in chromosomes 1 and 4 were repeatedly identified. Finally, the worth of mapping QTLs and prediction of gene function by QTL mapping etc. were discussed.

关 键 词：水稻测序品种 SSR 株高 QTL定位 

分 类 号：S511.01[农业科学—作物学]