使用GWAS和哈普洛型块分析检测到的对 durum小麦特征的育种影响
F Taranto1, S Esposito2, F Fania2,3
1Italian National Council of Research (CNR), Institute of Biosciences and Bioresources (IBBR), Bari, Italy.
Frontiers in plant science
|October 5, 2023
概括
对 durum小麦土地品种和品种的基因组分析揭示了28种与重要农业特征相关的定量特征核酸 (QTNs). 这些发现支持使用标记器辅助的选择,以改善 durum小麦的育种和品种登记.
科学领域:
- 植物遗传学 植物遗传学
- 农业科学 农业科学
- 基因组学就是基因组学.
背景情况:
- 坚硬小麦 (Triticum turgidum亚种) 是一种常见的小麦. 硬种的育种已经进化,需要了解其遗传基础.
- 基因组数据的进步为研究特征调节和改进育种策略提供了机会.
研究的目的:
- 评估现代育种对 durum小麦遗传结构的影响.
- 识别DNA标记物用于标记物辅助选择和品种注册.
主要方法:
- 在两个地点评估了123个 durum wheat 加入 (陆地品种,古老和现代品种).
- 分析了34个农学特征,包括UPOV描述符.
- 通过4241个SNP标记和6个多位置GWAS模型进行了关联映射.
主要成果:
- 确定了28种与植物形态和核子特征相关的定量特征核酸 (QTNs).
- 发现黄果 (Q.Yb-6A) 和旗叶绿化 (Q.FGSGls-2B.1) 的强烈关联.
- 在现代品种中观察到增加了半球区的多样性,这表明育种计划的影响.
结论:
- 开发了一组与UPOV描述符相关的具有成本效益的SNP标记器面板,用于品种注册.
- 鉴定到的SNP标记物可以作为硬小麦育种和遗传学的宝贵资源.
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