Comprehensive Evaluation of the Adaptability of 15 Tomato Germplasm Resources in Xinjiang

【Objective】 To fully explore the growth characteristics of existing tomato germplasm resources. 【Methods】 15 tomato germplasm resources introduced from different ecological regions were used as materials to determine 31 traits including agronomic traits, some appearance quality and fruit traits in different fertility periods, and their performance in Xinjiang was comprehensively evaluated using principal component analysis, correlation analysis and cluster analysis. 【Results】 The results showed that the 31 traits could be simplified into 6 principal components, which were fruit appearance, leaf traits, yield factor, quality factor, etc. The cumulative contribution rate reached 87.9%; the test materials were divided into 3 taxa by using Euclidean distance and class average method, and taxon I included 7 varieties, which had shorter plant height, more ventricles and higher yield per plant. Taxon II consisted of 6 varieties, which had moderate height, stout stalks, large single fruit weight, large transverse and longitudinal diameters, large leaf length and width, and high single plant yield, and the overall performance of this type of varieties was good. The varieties of this type had better appearance and quality. 【Conclusion】