Diversity of pomegranate (Punica granatum L.) germplasm in Tunisia

Thirty pomegranate (Punica granatum L.) accessions were studied to determin e the overall degree of polymorphism and to detect similarities among genot ypes. PCA and cluster analysis showed a considerable phenotypic and genetic diversity in the local pomegranate germplasm. Some polyclonal varieties we re identified and cases of homonymy were detected. The geographic origin wa s not a determinant criterion for cultivars clustering. Parameters with hig h discriminating values were those related to fruit size and color and juic e characteristics. Factors affecting pomegranate germplasm diversity are di scussed.