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在热应激环境下,Aegilops tauschii衍生的普通小麦种群中的丰富的谷物矿物质

Amir Ibrahim Ismail Emam^1,2, Nasrein Mohamed Kamal^3,4, Yasir Serag Alnor Gorafi^2,5

¹United Graduate School of Agricultural Sciences, Tottori University, Tottori, 680-8553, Japan.

Scientific reports

|February 15, 2025

概括

这项研究确定了小麦 (Triticum aestivum L.) 在热应激下增加矿物质含量的遗传变异. 几种多重合成衍生品 (MSD) 产品线显示矿物质度明显更高,为气候适应性作物提供了潜力.

科学领域:

农业科学农业科学
植物遗传学植物遗传学
营养科学营养科学

背景情况:

谷物填充期间的热应激会对小麦产量和质量产生负面影响.
关于影响小麦在热应激下矿物质积累的遗传因素的知识有限.

研究的目的:

在热应力下评估13种矿物度和千粒粒重量的小麦多重合成衍生物 (MSD) 的遗传变异.
使用全基因组关联研究 (GWAS) 识别与矿物质含量相关的基因组区域.

主要方法:

在苏丹的热应激田地条件下,在两个季节内评估了145种小麦MSD基因型.
利用全基因组关联研究 (GWAS) 来分析矿物度和千核重量的标记特征关联 (MTA).

主要成果:

在MSD线条之间观察到矿物质度的显著变化,一些线条显示矿物质含量比对照线条高30-50%.
确定了188个显著的MTA,其中 (Mg), (Mn), (P) 和 (Ba) 有着显著的关联.
发现了可能参与矿物质运输和热应激反应的候选基因.

结论:

多种合成衍生品 (MSD) 在热应力下矿物质积累方面表现出大量的遗传变异.
GWAS成功地确定了基因组区域和候选基因,以改善小麦的矿物质含量和耐热性.
这些发现为提高营养质量和适应气候变化的小麦品种的育种提供了基础.

关键词:

生物强化是一种生物强化.干旱地区是干旱地区.遗传多样性遗传多样性全基因组的关联.耐热性耐热性耐热性

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