Identification and Fine Mapping of a Stably Expressed QTL for Cold Tolerance at the Booting Stage Using an Interconnected Breeding Population in Rice

文献类型： 外文期刊

第一作者： Zhu, Yajun

作者： Zhu, Yajun;Chen, Kai;Chen, Tianxiao;Xu, Jianlong;Li, Zhikang;Zhu, Yajun;Chen, Kai;Mi, Xuefei;Xu, Jianlong;Zhu, Yajun;Chen, Kai;Xu, Jianlong;Li, Zhikang;Ali, Jauhar;Ye, Guoyou

作者机构：

期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）

ISSN： 1932-6203

年卷期： 2015 年 10 卷 12 期

页码：

收录情况： SCI

摘要： Cold stress is one of the major abiotic stresses that impede rice production. A interconnected breeding (IB) population consisted of 497 advanced lines developed using HHZ as the recurrent parent and eight diverse elite indica lines as the donors were used to identify stably expressed QTLs for CT at the booting stage. A total of 41,754 high-quality SNPs were obtained through re-sequencing of the IB population. Phenotyping was conducted under field conditions in two years and three locations. Association analysis identified six QTLs for CT on the chromosomes 3, 4 and 12. QTL qCT-3-2 that showed stable CT across years and locations was fine-mapped to an approximately 192.9 kb region. Our results suggested that GWAS applied to an IB population allows better integration of gene discovery and breeding. QTLs can be mapped in high resolution and quickly utilized in breeding.

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