52份大蒜种质资源农艺性状评价与聚类分析OA

To investigate the characteristics of garlic germplasm resources,thereby providing a theoretical reference for garlic variety selection and breeding innovation in Linyi City,12 agronomic traits of 52 garlic germplasm resources were surveyed.The coefficient of variation was calculated,and correlation analysis,principal component analysis,and cluster analysis were conducted.The results showed that the coefficients of variation for the 12 agronomic traits ranged from 3.5%to 30.1%,with varying degrees of correlation among the traits.The principal component analysis indicated that the majority of information regarding the 12 agronomic traits was contained in the first three principal components,with a cumulative contribution rate of 90.55%,representing traits related to bulb development,garlic bolt growth,and growth period,respectively.Cluster analysis classified the 52 garlic germplasm resources into two major groups and five sub-groups.Among them,sub-group Ia was identified as early-bolt type,sub-group Ic as bolt-bulb dual-purpose type,and sub-group IIa as bulb-bolt dual-purpose type.Based on the comprehensive scores of the 52 garlic germplasm resources,9 garlic germplasm resources suitable for different purposes were selected.In conclusion,the 9 excellent germplasm resources with different uses screened in this study not only enriches the gene bank of garlic breeding in Linyi City,but also provides important material support for the diversified development and optimization of variety structure of local garlic industry.