32份贵州大蒜资源农艺性状的聚类分析与评价

Cluster Analysis and Evaluation of Agronomic Characters of 32 Garlic Resources in Guizhou

为充分了解贵州大蒜资源之间的亲缘关系及变异特性,以32份大蒜资源为材料,对其农艺性状的遗传多样性进行分析。结果表明:贵州栽培的大蒜种质资源表型变异丰富,其中,鳞芽数的变异系数最大(50.73%),其次是鳞茎重(38.13%)和鳞茎盘直径(25.82%);数量性状的多样性指数均大于质量性状的多样性指数,且株幅的多样性指数最大(0.95)。农艺性状的聚类分析表明,32份大蒜资源分为两大组群,不同类群相似性较小,亲缘关系较远;同一类群相似性较大,亲缘关系较近。通过综合评价,筛选出较好的育种材料3份。

The genetic diversity of 32 garlic resources in Guizhou were conducted in the present study, the purpose of this study was to analyze the consanguineous relationship of interspecies and the variation of agronomic traits. The results showed that the morphological diversity was high among accessions assessed. The main stem diameter variation was clover number（50.73%）, followed by the blub weight （38.13%） and diameter of short stem（25.82%）. The index of genetic diversity of the agronomic traits of quantitative characteristics was higher than qualitative character, and the largest one was plant width. Based on cluster analysis of agronomic traits and principal components analysis, 32 garlic resources in Guizhou were divided into two groups, and each group had its respective character. Moreover, three breeding materials were selected.