Multivariate Statistical Analysis of Fruit Characters of Cherry Tomato Germplasm Resources

Twelve fruit characters of 62 cherry tomato germplasm resources were studied by multiple statistical analysis.The result of variation analysis indicated that there were abundant genetic variation among different fruit characters and different germplasm resources.The correlation analysis showed that 8 pairs of characters had extremely significant positive correlation and 7 pairs of characters had extremely significant negative correlation.Four factors which accounted for 74.61 % cumulative contributive rate were extracted by the factor analysis.Sixty-two cherry tomato germplasm resources were classified to 3 groups by cluster analysis,and the third group was evaluated as excellent germplasm.These results can be a basis for the breeding of cherry tomato and accelerating the utilization of these materials.