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用SCoT和ISSR标记物评估甜菜中的遗传多样性

Betül Yücel¹, Yeter Çilesiz², Tolga Karaköy³

¹Graduate School of Education, Sivas University of Science and Technology, Sivas 58140, Türkiye.

Plants (Basel, Switzerland)

|February 27, 2026

概括

这项研究使用SCoT (Start Codon Targeted) 和ISSR (Inter Simple Sequence Repeat) 标志物评估了甜菜的遗传多样性. 研究结果显示,高基因变异对于开发改进的甜菜品种和节约资源至关重要.

科学领域:

植物遗传学和育种植物遗传学和育种
分子生物学分子生物学
农业科学农业科学

背景情况:

甜菜 (Beta vulgaris L.) 对全球糖生产至关重要,需要有效利用遗传资源进行育种.
了解遗传多样性和种群结构是提高甜菜育种计划的关键.
现有的遗传资源,包括美国农业部基因库的加入,为改善甜菜品种提供了潜力.

研究的目的:

评估192种甜菜基因型的遗传多样性和种群结构.
为未来的甜菜育种计划确定潜在的遗传资源.
为了比较Start Codon Targeted (SCoT) 和Inter Simple Sequence Repeat (ISSR) 标记器在评估甜菜的遗传变异方面的有效性.

主要方法:

利用了192种甜菜基因型,包括187种美国农业部加入和5种商业品种.
采用了SCoT和ISSR (简单序列重复) 分子标记器.
使用多态波段计数,多态信息内容 (PIC),Nei的遗传多样性,Shannon的指数,树状图分析,结构和主要组件分析 (PCA) 分析数据.

主要成果:

使用5个SCoT和3个ISSR原料生成了68个多态波段 (100%的多态性).
SCoT标记物被证明比ISSR标记物更具信息性,表明了甜菜基因库内的高遗传变异.
种群结构分析揭示了不同的分组 (SCoT的K=4,ISSR的K=3) 与广泛的基因流动的证据.

结论:

结合的SCoT和ISSR标记物对于评估甜菜的遗传多样性是有效和互补的.
该研究发现了显著的遗传变异,为开发高产的甜菜品种提供了基础.
分子数据为指导育种计划和保护必不可少的甜菜遗传资源提供了宝贵的见解.

关键词:

这就是ISSR的ISSR.苏格兰苏格兰遗传多样性遗传多样性糖甜菜糖甜菜糖甜菜变化的变化变化变化.

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