Mapping QTLs for Drought Tolerance at Seedling Stage in Rice Using Doubled Haploid Population

被引：11
|
作者：
Xu Qun [1 ]
Yuan Xiao-ping [1 ]
Yu Han-yong [1 ]
Wang Yi-ping [1 ]
Tang Sheng-xiang [1 ]
Wei Xing-hua [1 ]
机构：
[1] China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Zhejiang, Peoples R China
来源：
RICE SCIENCE | 2011年 / 18卷 / 01期
关键词：
rice; drought tolerance; doubled haploid population; quantitative trait locus;
D O I：
10.1016/S1672-6308(11)60004-8
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
QTLs for drought tolerance at the rice seedling stage were analyzed using a doubled haploid (DH) population consisted of 251 lines from the cross between a japonica parent Maybelle and an indica parent Baiyeqiu. A genetic linkage map with 226 SSR marker loci was constructed. Single-locus analysis following composite interval mapping (CIM) detected a total of five QTLs located on five different chromosomes of rice. Four QTLs were also detected following two-locus analysis, resolving two pairs of epistatic QTLs (E-QTLs) with positive and additive genetic effects. The results indicated that the alleles from the parent Baiyeqiu contributed DH population to improve drought tolerance at the seedling stage.
引用
收藏
页码：23 / 28
页数：6
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