Dissection of genetic architecture of rice plant height and heading date by multiple-strategy-based association studies

文献类型： 外文期刊

第一作者： Zhou, Liyuan

作者： Zhou, Liyuan;Liu, Shouye;Xu, Haiming;Zhou, Liyuan;Liu, Shouye;Xu, Haiming;Wu, Weixun;Chen, Daibo;Zhan, Xiaodeng;Zhu, Aike;Zhang, Yingxin;Cheng, Shihua;Cao, Liyong;Wu, Weixun;Chen, Daibo;Zhan, Xiaodeng;Zhu, Aike;Zhang, Yingxin;Cheng, Shihua;Cao, Liyong;Lou, Xiangyang

作者机构：

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2016 年 6 卷

页码：

收录情况： SCI

摘要： Xieyou9308 is a certified super hybrid rice cultivar with a high grain yield. To investigate its underlying genetic basis of high yield potential, a recombinant inbred line (RIL) population derived from the cross between the maintainer line XieqingzaoB (XQZB) and the restorer line Zhonghui9308 (ZH9308) was constructed for identification of quantitative trait SNPs (QTSs) associated with two important agronomic traits, plant height (PH) and heading date (HD). By re-sequencing of 138 recombinant inbred lines (RILs), a total of similar to 0.7 million SNPs were identified for the association studies on the PH and HD. Three association mapping strategies (including hypothesis-free genome-wide association and its two complementary hypothesis-engaged ones, QTL-based association and gene-based association) were adopted for data analysis. Using a saturated mixed linear model including epistasis and environmental interaction, we identified a total of 31 QTSs associated with either the PH or the HD. The total estimated heritability across three analyses ranged from 37.22% to 45.63% and from 37.53% to 55.96% for the PH and HD, respectively. In this study we examined the feasibility of association studies in an experimental population (RIL) and identified several common loci through multiple strategies which could be preferred candidates for further research.

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