您好，欢迎访问安徽省农业科学院 机构知识库！

Construction of High-Density Genetic Map and QTL Mapping for Grain Shape in the Rice RIL Population

文献类型： 外文期刊

作者： Wei, Minyi 1 ; Luo, Tongping 1 ; Huang, Dahui 1 ; Ma, Zengfeng 1 ; Liu, Chi 1 ; Qin, Yuanyuan 3 ; Wu, Zishuai 1 ; Zhou, Xiaolong 1 ; Lu, Yingping 4 ; Yan, Liuhui 1 ; Qin, Gang 1 ; Zhang, Yuexiong 1 ;

作者机构： 1.Guangxi Acad Agr Sci, Rice Res Inst, Guangxi Key Lab Rice Genet & Breeding, Nanning 530007, Peoples R China

2.State Key Lab Conservat & Utilizat Subtrop Agrobio, Nanning 530004, Peoples R China

3.Guangxi Acad Agr Sci, Agr Sci & Technol Informat Res Inst, Nanning 530007, Peoples R China

4.Guangxi Acad Agr Sci, Liuzhou Res Ctr Agr Sci, Liuzhou Branch, Liuzhou 545000, Peoples R China

关键词： rice; recombinant inbred lines; high-density genetic map; grain shape; QTL mapping

期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）

ISSN：

年卷期： 2023 年 12 卷 16 期

页码：

收录情况： SCI

摘要： Grain shape is an important agronomic trait directly associated with yield in rice. In order to explore new genes related to rice grain shape, a high-density genetic map containing 2193 Bin markers (526957 SNP) was constructed by whole-genome resequencing of 208 recombinant inbred (RILs) derived from a cross between ZP37 and R8605, with a total genetic distance of 1542.27 cM. The average genetic distance between markers was 0.76 cM, and the physical distance was 201.29 kb. Quantitative trait locus (QTL) mapping was performed for six agronomic traits related to rice grain length, grain width, length-to-width ratio, thousand-grain weight, grain cross-sectional area, and grain perimeter under three different environments. A total of 39 QTLs were identified, with mapping intervals ranging from 8.1 kb to 1781.6 kb and an average physical distance of 517.5 kb. Among them, 15 QTLs were repeatedly detected in multiple environments. Analysis of the genetic effects of the identified QTLs revealed 14 stable genetic loci, including three loci that overlapped with previously reported gene positions, and the remaining 11 loci were newly identified loci associated with two or more environments or traits. Locus 1, Locus 3, Locus 10, and Locus 14 were novel loci exhibiting pleiotropic effects on at least three traits and were detected in multiple environments. Locus 14, with a contribution rate greater than 10%, influenced grain width, length-to-width ratio, and grain cross-sectional area. Furthermore, pyramiding effects analysis of three stable genetic loci showed that increasing the number of QTL could effectively improve the phenotypic value of grain shape. Collectively, our findings provided a theoretical basis and genetic resources for the cloning, functional analysis, and molecular breeding of genes related to rice grain shape.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：安徽省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台