干旱胁迫下普通大豆产量相关性状的遗传分析

IF 6 1区 农林科学 Q1 AGRONOMY Crop Journal Pub Date : 2023-08-01 DOI:10.1016/j.cj.2022.09.015
Lei Wu , Yujie Chang , Lanfen Wang , Liang Ji , Lin Peng , Shumin Wang , Jing Wu
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引用次数: 2

摘要

干旱胁迫严重损害了普通豆类的生产。为了促进普通大豆的抗旱育种,在全基因组水平的标记-性状关联研究中鉴定了分子标记。在两种水分条件下,210份普通大豆材料在成体阶段的11个农艺性状(株高、单株荚数、单株荚粒数、单株种子数、单株产量、荚长、收获指数、荚收获指数、成熟天数、百粒重和种子产量)表现出较大的变异。在水分充足的条件下,荚收获指数的变异系数从6.21%到单株种子数的51.00%,在干旱胁迫下,成熟期的变异系数为4.05%到单株种子数量的40.72%。在一项全基因组关联研究中,119个数量性状基因座与抗旱性相关,其中41个与已知基因座相邻。在这些基因座中,有12个被发现与至少两个性状相关。在Pv01和Pv02上鉴定出三个主要基因座。发现了一组编码MYBs、AREBs、WKRYs和蛋白激酶的候选基因。这些结果揭示了控制抗旱性的有希望的等位基因,为抗旱性的遗传基础提供了线索,并加速了未来提高普通大豆抗旱性的努力。
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Genetic dissection of yield-related traits in response to drought stress in common bean

Drought stress severely impairs common bean production. For facilitating drought-resistance breeding in common bean, molecular markers were identified in a genome-wide level marker–trait association study. A panel of 210 common bean accessions showed large variation in 11 agronomic traits at the adult stage (plant height, pod number per plant, seed number per pod, seed number per plant, seed yield per plant, pod length, harvest index, pod harvest index, days to maturity, hundred-seed weight, and seed yield) under two water conditions. The coefficient of variation ranged from 6.21% for pod harvest index to 51.00% for seed number per plant under well-watered conditions, and from 4.05% for days to maturity to 40.72% for seed number per plant under drought stress. In a genome-wide association study, 119 quantitative-trait loci were associated with drought resistance, including 41 adjacent to known loci. Among these loci, 12 were found to be associated with at least two traits. Three major loci were identified at Pv01 and Pv02. A set of candidate genes were found that encode MYBs, AREBs, WKRYs, and protein kinases. These results reveal promising alleles that control drought resistance, shedding light on the genetic basis of drought resistance and accelerating future efforts for drought resistance improvement in common bean.

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来源期刊
Crop Journal
Crop Journal Agricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
9.90
自引率
3.00%
发文量
638
审稿时长
41 days
期刊介绍: The major aims of The Crop Journal are to report recent progresses in crop sciences including crop genetics, breeding, agronomy, crop physiology, germplasm resources, grain chemistry, grain storage and processing, crop management practices, crop biotechnology, and biomathematics. The regular columns of the journal are Original Research Articles, Reviews, and Research Notes. The strict peer-review procedure will guarantee the academic level and raise the reputation of the journal. The readership of the journal is for crop science researchers, students of agricultural colleges and universities, and persons with similar academic levels.
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