Genome-wide association study for boll weight in Gossypium hirsutum races

文献类型： 外文期刊

第一作者： Wang, Yuanyuan

作者： Wang, Yuanyuan;Guo, Xinlei;Sun, Runrun;Tao, Ye;Li, Baihui;Wang, Qinglian;Xu, Yanchao;Cai, Xiaoyan;Zhou, Zhongli;Hou, Yuqing;Liu, Fang;Cai, Xiaoyan;Liu, Fang;Qin, Tengfei;Liu, Fang

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关键词： G. hirsutum race; Boll weight; Genome-wide association study; Single-nucleotide polymorphism

期刊名称：FUNCTIONAL & INTEGRATIVE GENOMICS （ 影响因子：2.9； 五年影响因子：3.3 ）

ISSN： 1438-793X

年卷期： 2023 年 23 卷 4 期

页码：

收录情况： SCI

摘要： High yield has always been an essential target in almost all of the cotton breeding programs. Boll weight (BW) is a key component of cotton yield. Numerous linkage mapping and genome-wide association studies (GWAS) have been performed to understand the genetic mechanism of BW, but information on the markers/genes controlling BW remains limited. In this study, we conducted a GWAS for BW using 51,268 high-quality single-nucleotide polymorphisms (SNPs) and 189 Gossypium hirsutum accessions across five different environments. A total of 55 SNPs significantly associated with BW were detected, of which 29 and 26 were distributed in the A and D subgenomes, respectively. Five SNPs were simultaneously detected in two environments. For TM5655, TM8662, TM36371, and TM50258, the BW grouped by alleles of each SNP was significantly different. The +/- 550 kb regions around these four key SNPs contained 262 genes. Of them, Gh_A02G1473, Gh_A10G1765, and Gh_A02G1442 were expressed highly at 0 to 1 days post-anthesis (dpa), - 3 to 0 dpa, and - 3 to 0 dpa in ovule of TM-1, respectively. They were presumed as the candidate genes for fiber cell differentiation, initiation, or elongation based on gene annotation of their homologs. Overall, these results supplemented valuable information for dissecting the genetic architecture of BW and might help to improve cotton yield through molecular marker-assisted selection breeding and molecular design breeding.

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