关键词: 番茄, 表型性状, 遗传多样性

Abstract: Coefficient of variation, correlation analysis, principal component analysis and cluster analysis were carried out on 15 quality traits and 8 quantitative traits of 95 tomato resources. Analysis of the following conclusions,the phenotypic traits of the resources showed rich genetic diversity; Among the quality traits, the highest Shannon-Wiener diversity index was pericarp color at mature （1.235）;The compound leaf length （2.087） and plant height （2.079） were higher quantitative traits, and the highest variation coefficient was single fruit weight （128.6%）. There was a complexinterrelation between traits. The cumulative contribution rate of the first 7 principal components was 76.71%, which contained most of the genetic information of all traits. Based on phenotypic traits, the 95 resources were divided into 5 groups at genetic distances of 5 by the method of intergroup clustering. Group 1 contained 35 resources, which were characterized by high plant height, large single fruit quality and infinite growth habit; Group 4 contained 44 cultivars, and the main characteristics were low fruit weight and high fruit shape index.

Key words: tomato, phenotypic trait, genetic diversity