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针对玉米 (Zea mays L.) 中的与树茎抗性相关的特征进行全基因组关联研究

Bangtai Wang^1,2, Meili Yang¹, Hua Guo^1,2

¹Hebi Academy of Agricultural Sciences, Hebi, 458031, Henan, China.

|January 3, 2024

概括

这项研究确定了29个与玉米茎存放抗性特征相关的显著SNP,如直径,长度,皮肤强度和干物质. 突出了参与细胞结构和应激反应的关键基因,有助于未来的繁殖工作.

科学领域:

植物遗传学和育种.
农业学是一种农业学.
玉米的遗传学玉米的遗传学

背景情况:

干茎直径,长度,皮层透度阻力和干物质含量对于玉米存放阻力至关重要.
了解这些特征的遗传基础对于改善作物稳定性至关重要.

研究的目的:

为了识别与玉米茎特征相关的遗传标记,相关的抵御性.
探索影响玉米茎质量和稳定的候选基因.

主要方法:

全基因组关联研究 (GWAS) 使用来自377个玉米杂交系的461,053个SNP.
分析了三个生长阶段的茎状特征 (,谷粒填充,成熟).
混合线性模型和通用线性模型分析以检测显著的SNP和候选基因.

主要成果:

确定了29个与茎直径,长度,皮肤透力和干物质含量相关的显著SNP.
检测出参与植物结构,信号转导,离子运输和细胞壁合成的候选基因.
突出的是Zm00001d014449和Zm00001d005300 (MYB44) 它们在茎发育和应力抵抗方面的作用.

结论:

这项研究加深了对玉米茎存放抗性的遗传结构的理解.
提供了有价值的遗传资源和理论指导,用于在玉米育种计划中使用标记器辅助的选择,旨在增强存放耐药性.

关键词:

干物质含量干物质含量全基因组关联研究研究.住宿阻力住宿阻力住宿阻力玉米玉米玉米是一种子的特征子的特征

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相关概念视频

Genome-wide Association Studies-GWAS

Genome-wide Association Studies-GWAS

Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...