GWAS Mediated Elucidation of Heterosis for Metric Traits in Cotton (Gossypium hirsutum L.) Across Multiple Environments
文献类型: 外文期刊
第一作者: Sarfraz, Zareen
作者: Sarfraz, Zareen;Iqbal, Muhammad Shahid;Geng, Xiaoli;Iqbal, Muhammad Sajid;Nazir, Mian Faisal;Ahmed, Haris;He, Shoupu;Jia, Yinhua;Pan, Zhaoe;Zhu, Haiyong;Pang, Baoyin;Wang, Liru;Sun, Junling;Du, Xiongming;Ahmad, Saghir;Sun, Gaofei;Wang, Qinglian;Zhang, Xin;Qin, Hongde;Yi, Xianda;Liu, Jinhai;Yang, Jinlong;Cai, Zhongmin;Zhou, Guanyin;Liu, Hui;Yang, Jun;Ma, Zhiying;Li, Zhikun;Xu, Dongyong;Zhang, Jinbiao;Li, Lin;Zhang, Xuelin;Huang, Aifen
作者机构:
关键词: GWAS; heterosis; F-1 hybrid; hQTNs; multiple environments; upland cotton
期刊名称:FRONTIERS IN PLANT SCIENCE ( 影响因子:5.754; 五年影响因子:6.612 )
ISSN: 1664-462X
年卷期: 2021 年 12 卷
页码:
收录情况: SCI
摘要: For about a century, plant breeding has widely exploited the heterosis phenomenon-often considered as hybrid vigor-to increase agricultural productivity. The ensuing F-1 hybrids can substantially outperform their progenitors due to heterozygous combinations that mitigate deleterious mutations occurring in each genome. However, only fragmented knowledge is available concerning the underlying genes and processes that foster heterosis. Although cotton is among the highly valued crops, its improvement programs that involve the exploitation of heterosis are still limited in terms of significant accomplishments to make it broadly applicable in different agro-ecological zones. Here, F-1 hybrids were derived from mating a diverse Upland Cotton germplasm with commercially valuable cultivars in the Line x Tester fashion and evaluated across multiple environments for 10 measurable traits. These traits were dissected into five different heterosis types and specific combining ability (SCA). Subsequent genome-wide predictions along-with association analyses uncovered a set of 298 highly significant key single nucleotide polymorphisms (SNPs)/Quantitative Trait Nucleotides (QTNs) and 271 heterotic Quantitative Trait Nucleotides (hQTNs) related to agronomic and fiber quality traits. The integration of a genome wide association study with RNA-sequence analysis yielded 275 candidate genes in the vicinity of key SNPs/QTNs. Fiber micronaire (MIC) and lint percentage (LP) had the maximum number of associated genes, i.e., each with 45 related to QTNs/hQTNs. A total of 54 putative candidate genes were identified in association with HETEROSIS of quoted traits. The novel players in the heterosis mechanism highlighted in this study may prove to be scientifically and biologically important for cotton biologists, and for those breeders engaged in cotton fiber and yield improvement programs.
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