百慕大草 (Cynodon spp.) 的遗传多样性和种群结构 通过基因型测序测序揭示出来的
Lovepreet Singh1, Yanqi Wu2, James D McCurdy1
1Department of Plant and Soil Sciences, Mississippi State University, Mississippi State, MS, United States.
Frontiers in plant science
|June 26, 2023
概括
探索百慕大草 (Cynodon spp.) 的遗传多样性 这对繁殖至关重要. 这项研究使用基因型测序 (GBS) 鉴定了206个加入的特征,揭示了四个不同的亚种群和大量的遗传变异,用于品种的发展.
科学领域:
- 植物遗传学 植物遗传学
- 农业学是一种农业学.
- 生物信息学是一种生物信息学.
背景情况:
- 百慕大草 (Cynodon spp.) 是一种植物. 由于缺乏足够的遗传和表型多样性数据,繁殖受限.
- 了解遗传变异是开发改善草和料品种的关键.
研究的目的:
- 为了遗传地表征一组多样化的百慕大草加入.
- 为了确定种群结构和评估Cynodon spp.内的遗传多样性.
主要方法:
- 组装了全球起源的206个Cynodon加入 (193个C. dactylon,13个C. transvaalensis).
- 使用基因型测序 (GBS) 产生37,496个单核酸多态 (SNP).
- 使用ADMIXTURE,主要成分分析 (PCA) 和家族遗传分析来评估人口结构和多样性.
主要成果:
- 在生殖质面板中确定了四个不同的亚群.
- 亚群包括来自不同来源的C. dactylon,C. transvaalensis和来自特定育种计划的加入.
- 遗传多样性参数 (Nei的遗传距离,近亲繁殖系数,Fst) 显示出很大的差异.
结论:
- 标志性的生殖质面板表现出显著的遗传多样性.
- 这个小组对未来的百慕大草遗传研究和品种开发具有相当大的潜力.
- 这些发现为Cynodon spp.的有针对性的育种策略提供了基础.
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