基于DUS测试的绿豆品种多样性与特异性分析OA

In order to optimize the DUS testing of mung bean.provide reference for breeding new varieties of mung bean.In this study,the clustering,diversity,correlation,and coefficient of variation of 31 traits of 24 varieties applying the mung bean new variety testing in 2023 were comprehensively analyzed.The result showed that the genetic diversity of three quality traits(anthocyanin coloration of hypocotyl,anthocyanin coloration of leaflet base,and seed coat luster)was all low,and 83.33%-87.50%of the varieties showed anthocyanin coloration of hypocotyl and leaflet base with glossy seeds,presenting a highly convergent phenotype.Among the 10 quantitative traits,the genetic diversity index of maturity stage was the highest,and the index of main stem villi was the lowest,all tested varieties had a trifoliolate phenotype,the anthocyanin coloration intensity of petiole was dominated by weak expression,and the angle between plant branches and main stem was generally above the medium level.Among the 7 core quantitative traits,the coefficient of variation of plant pod number was the largest(28.53%),and that of pod seed number was the smallest(6.25%).Plant height was extremely significantly positively correlated with the number of main stem nodes,and pod length was extremely significantly positively correlated with 100-seed weight,among which pod length had the greatest positive contribution to 100-seed weight,while plant height and pod number were negatively correlated with 100-seed weight.Cluster analysis divided the 24 varieties into 5 groups,and pod length and pod number had a high degree of differentiation among the groups,so the two traits could be used as the core traits for judging the distinctness of new mung bean varieties.