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在两种天然玉米种群中对核的营养质量进行全基因组关联分析

Wenting Wan^1,2, Ying Wu^1,2, Die Hu^1,2

¹Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, Ministry of Agriculture and Rural Affairs, College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi China.

Molecular breeding : new strategies in plant improvement

|June 14, 2023

概括

研究人员确定了与玉米谷物质量特征相关的98个显著单核酸多态 (SNP). 这些发现有助于培育具有营养和商业价值的优质玉米品种.

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:

玉米是重要的主食作物,其营养和谷物质量特征影响人类/动物营养和商业价值.
了解这些特征的遗传基础对于开发改进的玉米品种至关重要.

研究的目的:

对玉米的谷物质量特征进行全基因组关联研究 (GWAS).
识别影响蛋白质,油,粉和纤维含量的遗传标记和候选基因.

主要方法:

在两个玉米关联面板 (AM122和AM180) 上进行了全基因组关联分析 (GWAS).
分析涉及四个主要的谷物质量特征:蛋白质,油,粉和纤维含量.
转录组数据整合被用来识别接近显著SNP的候选基因.

主要成果:

98个显著的单核酸多态 (SNP) 与四个谷物质量特征相关 (P < 1 × 10−4).
31个候选基因在内核开发过程中高度表达,在200kb的相关SNP内被确定.
这些基因在有着不同的品质特征的玉米品种之间表达差异.

结论:

已识别的SNP和候选基因为标记器辅助育种提供了宝贵的遗传资源.
候选基因可能通过包括植物激素信号和自在内的途径调节玉米谷物质量.
这项研究为培育高品质玉米品种提供了关键的见解.

关键词:

候选基因是一个候选基因.表达方式表达方式表达方式表达方式表达方式表达方式表达方式表达方式表达方式表达方式表达方式表达方式表达方式全基因组关联分析分析.谷物质量的谷物质量玉米玉米玉米是一种

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