基因组范围的关联研究在多亲玉米种群中的内核行号
Yizhu Wang1, Fengyun Ran1, Xingfu Yin2
1College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201, China.
International journal of molecular sciences
|March 28, 2024
概括
这项研究确定了277个定量特征位点 (QTL) 和53个单核酸多态 (SNP),与玉米的内核行号 (KRN) 相关. 发现了7个调节KRN的新型候选基因,推进了高产混合物开发.
科学领域:
- 植物遗传学 植物遗传学
- 农作物科学 农作物科学
- 农业生物技术 农业生物技术
背景情况:
- 核心行号 (KRN) 是一种影响谷物产量的关键玉米特征.
- 了解KRN的遗传机制对于开发优秀的杂交品种和杂交品种至关重要.
研究的目的:
- 确定与KRN相关的定量特征位置 (QTL) 和单核酸多态 (SNP).
- 通过共定位QTL和SNP来确定调节KRN的候选基因.
- 探索参与KRN形成的途径,并使用基因本体学 (GO) 和基因和基因组的京都百科全书 (KEGG) 分析确定关键候选基因.
主要方法:
- 经过八代人的自私,开发出了一个多亲玉米种群.
- 在三年内在五个环境中表型化KRN.
- 使用高质量的基因型数据进行了链接和全基因组关联分析.
- 利用基因表达,GO和KEGG丰富分析来识别候选基因.
主要成果:
- 确定了277个与KRN相关的显著QTL和53个显著SNP.
- 确定了五个特定的SNP (例如,SNP-177304649) 很可能与KRN有关.
- 鉴定了七个与KRN相关的新型候选基因 (例如Zm00001d022420,Zm00014a012929),其中六个是使用B73参考基因组识别的,一个是使用Mo17.
结论:
- 这项研究提供了关于这七个基因与玉米中KRN的关联的第一份报告.
- 这些发现为了解KRN的遗传控制提供了理论基础.
- 这些见解对于通过异质化开发高产玉米杂交品种有价值.
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