Genetic Dissection of Milled Rice Grain Shape by Using a Recombinant Inbred Line Population and Validation of qMLWR11.1 and qMLWR11.2

文献类型： 外文期刊

第一作者： Zhang, Liting

作者： Zhang, Liting;Lu, Zhanhua;Pan, Zhaoyang;Chen, Tengkui;Wang, Shiguang;Liu, Wei;Wang, Xiaofei;Wu, Haoxiang;Chen, Hao;Zhan, Yunyi;He, Xiuying;Zhang, Liting;Lu, Zhanhua;Pan, Zhaoyang;Chen, Tengkui;Wang, Shiguang;Liu, Wei;Wang, Xiaofei;Wu, Haoxiang;Chen, Hao;Zhan, Yunyi;He, Xiuying;Zhang, Liting;Lu, Zhanhua;Pan, Zhaoyang;Chen, Tengkui;Wang, Shiguang;Liu, Wei;Wang, Xiaofei;Wu, Haoxiang;Chen, Hao;Zhan, Yunyi;He, Xiuying;Zhang, Liting;Lu, Zhanhua;Pan, Zhaoyang;Chen, Tengkui;Wang, Shiguang;Liu, Wei;Wang, Xiaofei;Wu, Haoxiang;Chen, Hao;Zhan, Yunyi;He, Xiuying

作者机构：

关键词： rice (Oryza sativa L.); appearance quality; milled rice grain shape; MGL; MGW; MLWR; QTL; RIL

期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）

ISSN： 2223-7747

年卷期： 2024 年 13 卷 22 期

页码：

收录情况： SCI

摘要： Grain shape in rice (Oryza sativa L.) is a complex trait governed by multiple quantitative trait loci (QTLs). To dissect the genetic basis of rice shape, QTL analysis was conducted for milled rice grain width (MGW), milled rice grain length (MGL), and milled rice length-to-width ratio (MLWR) using a recombinant inbred line (RIL) population of F-10 and F-11 generations derived from a cross between Yuexiangzhan and Shengbasimiao. A high-density genetic map consisting of 2412 bins was constructed by sequencing 184 RILs, spanning a total length of 2376.46 cM. A total of 19 QTLs related to MGL, MGW, and MLWR were detected under two environments. The range of phenotypic variation attributed to individual QTL ranged from 1.67% to 32.08%. Among those, a novel locus for MGL, MGW and MLWR, designated as qMLWR3.2, was pinpointed within a specific similar to 0.96-Mb region. Two novel loci for MGW and MLWR, qMLWR11.1 and qMLWR11.2, were verified within similar to 1.22-Mb and similar to 0.52-Mb regions using three RIL-developed populations, respectively. These findings lay the foundation for further map-based cloning and molecular design breeding in rice.

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