绿豆种质资源农艺性状和SSR分子标记的遗传多样性分析
李小雷 , 王雪 , 宗海龙 , 鲍红春 , 白重阳
内蒙古农业大学学报(自然科学版) ›› 2026, Vol. 47 ›› Issue (5) : 8 -16.
绿豆种质资源农艺性状和SSR分子标记的遗传多样性分析
Analysis of Genetic Diversity in Agronomic Traits and SSR Molecular Markers of Mung Bean Germplasm Resources
绿豆的研究水平远远落后于大宗作物,在品种选育方面进展缓慢,为了多种手段相结合探究绿豆遗传多样性,本研究利用田间形态性状标记和SSR分子标记相结合的手段对来自不同地区的91份绿豆种质资源进行遗传多样性分析。结果表明,复叶叶形和荚宽遗传多样性最大,复叶叶形和单株荚数的变异系数最大。质量性状和数量性状的平均遗传多样性指数分别为0.599 3、1.951 6,平均变异系数分别为0.326 9、0.245 5。表型性状UPGMA聚类可将材料分为5个类群。第Ⅰ类群与第Ⅲ类群综合表现较好;对不同种质材料进行主成分分析,共有11个主成分的特征值大于1,累积贡献率为70.752%,91份绿豆材料中综合表现最好的品种是CL0009。6对SSR引物共检测出23个多态性条带,通过SSR分子标记可将绿豆种质资源分为6个类群。本研究结果可为绿豆新品种培育提供理论参考。
Research on mung bean (Vigna radiata) trails significantly lags behind that of major crops, resulting in relatively slow progress in variety development. To investigate the genetic diversity of mung bean, this study analyzed 91 germplasm accessions from different regions using a multi-faceted approach that combined field-based morphological markers and SSR molecular markers. Morphological traits exhibited the highest level of genetic diversity, with compound leaf shape and pod width showing the largest coefficients of variation (CVs). The mean genetic diversity indices for qualitative and quantitative traits were 0.599 3 and 1.951 6, respectively, with corresponding mean CVs of 0.326 9 and 0.245 5. UPGMA clustering based on phenotypic traits categorized the accessions into five clusters, with Clusters I and III showing superior overall performance. Principal component analysis (PCA) of the germplasm accessions identified eleven principal components (PCs) with eigenvalues greater than 1, collectively explaining 70.752% of the total variance. Among the 91 mung bean accessions, CL0009 exhibited the best overall performance. Additionally, six pairs of SSR primers detected 23 polymorphic bands, classifying the mung bean germplasm accessions into six clusters. These results provided a theoretical basis for mung bean variety breeding and improvement.
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内蒙古农业大学博士科研启动基金项目(BJ08-8)
国家自然科学基金项目(31302021)
内蒙古自治区自然科学基金项目(2010MS0502)
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