Abstract
Twenty three plum (Prunus sp.) genotypes were studied to assess the overall degree of polymorphism, detect similarities among important pomological, fruit quality and yield parameters. Sixteen variables were scored and subjected to multivariate analysis. Results showed a considerable phenotypic diversity among plum genotypes. The cluster analysis classified genotypes into two major groups according to their potential characteristics. The first group was found superior in terms of fruit morphological and yield related characteristics and second group in fruit quality attributes. Principal component analysis (PCA) revealed that traits positively related to fruit length, diameter, volume, weight, pulp thickness, stone length, stone diameter, stone weight, reducing sugars and total sugars, and negatively related to fruit firmness, acidity, non reducing sugars, juice content and fruit yield accounted for a large proportion of the observed variability. The genotypes Prune, Grand Duke, Italian Plum, President Plum, Mariposa, Beauty and Santa Rosa were found unique for fruit and yield attributing traits.
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