硬小麦 (Triticum durum Desf.) 的表型演变 基于SNP,形态特征,UPOV描述符和与内核相关的特征
Stefania Marzario1, Rita Sica1, Francesca Taranto2
1School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Potenza, Italy.
Frontiers in plant science
|September 13, 2023
概括
这项研究使用SNP数据和农学特征分析了陆地品种和品种之间的 durum小麦遗传多样性. 这些发现揭示了不同的遗传群体,并突出了环境对特征的影响,为未来的育种策略提供了信息.
科学领域:
- 农业科学 农业科学
- 遗传学 遗传学 是一个
- 植物育种 植物育种
背景情况:
- 坚硬小麦是全球重要的作物,特别是在地中海地区.
- 利用陆地品种,旧品种和现代品种的遗传变异对于 durum小麦的繁殖进步至关重要.
研究的目的:
- 为了全面分析123种 durum小麦加入的遗传结构演变.
- 评估陆地品种,古老和现代品种之间的遗传多样性和种群结构.
- 评估基因型和环境对各种植物和核特征的影响.
主要方法:
- 使用的Illumina iSelect 15K小麦SNP阵列用于基因定型123种 durum小麦加入.
- 评估了33种植物和核的特征,包括国际植物新品种保护联盟 (UPOV) 的描述符.
- 主要组件的差别分析 (DAPC),贝叶斯人口结构,混合ANOVA和PCAmix多变量分析.
主要成果:
- 根据材料类型确定了五个不同的基因组,反映了繁殖策略.
- 通过环境相互作用 (GEI) 检测出大多数农业形态和质量特征的显著基因型.
- 发现每核的核数和谷物蛋白质含量具有较低的遗传性,这表明对环境的影响很大.
- 植物的高度,转向时间和内核特征是群体差异化的主要驱动因素.
结论:
- 这项研究提供了关于 durum wheat 的遗传多样性及其演变的宝贵见解.
- 了解基因架构和环境影响对于有效的 durum小麦育种至关重要.
- 数据有助于管理和利用可能因选择而丧失的宝贵遗传资源.
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