Genetic dissection of top three leaf traits in rice using progenies from a japonicaxindica cross

文献类型： 外文期刊

第一作者： Li, Huihui

作者： Li, Huihui;Ma, Juan;Wan, Jianmin;Wang, Jiankang;Yin, Changbin;Li, Huihui;Ma, Juan;Wan, Jianmin;Wang, Jiankang;Zhao, Zhigang;Wang, Zhiquan;Liu, Shijia;Chen, Liangming;Liu, Xi;Tian, Yunlu;Xu, Lidong;Wang, Zhiquan;Zhang, Dashuang;Zhu, Susong;Li, Danting

作者机构：

期刊名称：JOURNAL OF INTEGRATIVE PLANT BIOLOGY （ 影响因子：7.061； 五年影响因子：6.002 ）

ISSN： 1672-9072

年卷期： 2017 年 59 卷 12 期

页码：

收录情况： SCI

摘要： The size of the top three leaves of rice plants is strongly associated with yield; thus, it is important to consider quantitative traits representing leaf size (e.g., length and width) when breeding novel rice varieties. It is challenging to measure such traits on a large scale in the field, and little is known about the genetic factors that determine the size of the top three leaves. In the present study, a population of recombinant inbred lines (RILs) and reciprocal single chromosomal segment substitution lines (SSSLs) derived from the progeny of a japonica Asominorixindica IR24 cross were grown under four diverse environmental conditions. Six morphological traits associated with leaf size were measured, namely length and flag leaf, length and flag, second and third leaves. In the RIL population, 49 QTLs were identified that clustered in 30 genomic region. Twenty-three of these QTLs were confirmed in the SSSL population. A comparison with previously reported genes/QTLs revealed eight novel genomic regions that contained uncharacterized ORFs associated with leaf size. The QTLs identified in this study can be used for marker-assisted breeding and for fine mapping of novel genetic elements controlling leaf size in rice.

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