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高分辨率的基因型-表型图识别了TaSPL17控制小麦的谷粒数量和大小

Yangyang Liu^1,2, Jun Chen³, Changbin Yin⁴

¹Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.

|August 28, 2023

概括

这项研究使用了4000万个单核酸多态 (SNP) 来分析小麦形态,识别了TaSPL17作为增强谷物产量的基因. 这项研究有助于小麦遗传改进和候选基因发现.

科学领域:

植物遗传学植物遗传学
农作物科学农作物科学
农业基因组学农业基因组学

背景情况:

大规模的基因型-表型关联研究对于识别作物中的有益等位基因至关重要.
在小麦全基因组关联研究 (GWAS) 中,有限的单核酸多态 (SNPs) 阻碍了标记特征关联检测.
由于对环境的敏感性,对于每条尖子的粒度数的基因已知很少.

研究的目的:

在小麦中对27个尖峰形态特征进行大规模的GWAS.
为了确定尖形态和谷物产量特征的新型遗传关联.
调查TaSPL17在调节谷物产量组件中的作用.

主要方法:

使用大约4000万个过的SNP进行了全基因组关联研究 (GWAS).
分析了27个尖峰形态特征及其子特征.
在TaSPL17基因上研究的单元类型.

主要成果:

在590个关联的峰值中检测到132,086个显著的标记特征关联.
通过分析尖形态的子特征,确定了额外和更强的关联.
发现TaSPL17积极调节谷物大小和数量,通过美里系统发育提高谷物产量.

结论:

尖形态的遗传剖析是检测小麦谷物产量特征信号的强大策略.
TaSPL17通过其对尖状和花状水系发育的影响,在提高谷物产量方面发挥着关键作用.
这项研究为小麦基因改进和候选基因克隆提供了资源.

关键词:

在GWAS中,GWAS就是GWAS.谷物数量谷物数量粒度大小粒度大小粒度大小在 TaSPL17 中使用.小麦小麦小麦的小麦.

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