To screen out high-quality melon germplasm resources,genetic diversity analysis and evaluation were conduct-ed on 65 existing melon germplasm resources at Jilin Vegetable and Flower Science Research Institute.The investiga-tion,statistics,and data analysis were conducted on the main fruit traits.Through genetic analysis of the fruit,it was found that the coefficient of variation ranged from 16.62% to 59.25%,and the diversity index ranged from 4.11 to 4.38.Correlation analysis was conducted on the fruit traits of cantaloupe,with 22 traits showing extremely significant correla-tion and 2 traits showing significant correlation.Principal component analysis was conducted on the fruit traits of melon resources,and five principal component factors were selected at a cumulative contribution rate of 84.19%,namely sugar acid factor,mass factor,phenotype factor,fruit stem factor,and quality factor.Cluster analysis was conducted on the fruit traits of cantaloupe,and 65 cantaloupes were clustered into three major groups at a Euclidean distance of 12.5.Through comprehensive evaluation score calculation,10 varieties with good traits were selected,including Kagari Musk,Q196,Rajasthan Honey Melon,FY39,Bambi Western Melon,Q174,Q171,Rich Sweetness 132,Milu,Q163,which had excellent quality and moderate fruit mass.
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