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玉米 (Zea maysL.) 的遗传剖析使用全基因组关联研究的微量元素特征

Hang Zhu^1,2,3,4, Ruiqiang Lai^1,2, Weiwei Chen^2,3,5

¹Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China.

BMC plant biology

|December 7, 2023

概括

这项研究确定了玉米中,铁和的定量特征核酸 (QTNs). 这些发现有助于培育具有增强营养微量元素含量的玉米品种.

科学领域:

农业科学农业科学
遗传学是一个遗传学.
植物育种植物育种

背景情况:

玉米 (Zea mays L.) 是一个全球主食作物,对食品和料至关重要.
玉米中的生物微量元素是营养增强的重要育种目标.

研究的目的:

检测玉米粒中与 (Mn),铁 (Fe) 和 (Mo) 含量相关的定量特征核酸 (QTNs).
为了确定优异的等位基因和预测交叉组合,开发生物强化玉米品种.

主要方法:

使用了两个全基因组关联研究 (GWAS) 模型:MLM_Q+K和MLM_PCA+K.
在三个环境中分析了170个玉米材料,以检测QTN.
根据QTN同位点和表型值确定优质等位基和预测交叉组合.

主要成果:

在各种环境中检测到共602个QTN (87个为Mn,205个为Fe,310个为Mo).
从8个 (Mn),10个 (Fe) 和26个 (Mo) 显著的QTNs中确定了44个高级等位基因.
预计11个交叉组合更高的Mn,Fe,Mo,或多元素含量.

结论:

这项研究为高微量元素玉米的分子标记器辅助育种提供了理论基础.
确定了参与玉米元素运输和积累的候选基因.
有助于开发高品质的玉米品种,富含必要的微量元素.

关键词:

候选基因是一个候选基因.交叉的组合交叉的组合在GWAS中,GWAS就是GWAS.玉米玉米玉米是一种一个微量元素的痕迹.

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