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遗传多样性和人口结构分析江西省Pinus elliottii的生殖质资源

Min Yi¹, Rong Hu¹, Wending Huang¹

¹Jiangxi Provincial Key Laboratory of Subtropical Forest Resources Cultivation, 2011 Collaboration Innovation Center of Jiangxi Typical Trees Cultivation and Utilization, College of Forestry, Jiangxi Agricultural University, Nanchang 330045, China.

Life (Basel, Switzerland)

|November 27, 2024

概括

松树 (Pinus elliottii) 具有很高的遗传多样性,在种群中最多的变异. 这一发现支持高树脂品种的有针对性的育种和可持续的资源管理.

科学领域:

森林遗传学森林遗传学
植物育种植物育种
分子生态学分子生态学

背景情况:

了解Pinus elliottii的遗传多样性对于有效的育种计划至关重要.
评估不同来源类型 (引入,第一周期,改进) 的遗传趋势是可持续资源管理的关键.

研究的目的:

为了比较和评估Pinus elliottii来源的遗传多样性和趋势.
为江西省松树 (Pinus elliottii) 的先进遗传改进和可持续利用提供基础.

主要方法:

使用EST-SSR标记来分析417个Pinus elliottii个体的遗传多样性和种群结构.
使用了分子变异分析 (AMOVA),结构软件,主要坐标分析 (PCoA) 和UPGMA集群.

主要成果:

在19个SSR位点中确定了103个等位基因,表明中度至高的遗传多样性 (I=0.862,He=0.457).
发现97.90%的遗传变异发生在原产地内,差异化低 (Fst=0.016) 和高基因流 (Nm=15.715).
结构,PCoA和UPGMA分析揭示了两个不同的基因组.

结论:

松树的生殖质资源表现出丰富的遗传多样性,主要是在来源范围内.
高树脂切割松的育种计划应该优先考虑具有高遗传多样性的种群,并在它们中选择优秀的个体.
研究结果支持可持续利用和开发高树脂产量品种.

关键词:

松树 (Pinus elliottii) 是一个有趣的植物.在SSR标记器上.繁殖策略繁殖策略遗传差异化遗传差异化遗传多样性遗传多样性种子质资源的种子质资源.

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