ISSR analysis of genetic diversity among cultivated eggplant and wild relatives.

The genetic relationship and diversity of 44 eggplants,Solanum melongena L.,germplasms and 4 wild relatives were analyzed by ISSR method.One hundred and fifty-three of 186 bands were amplified by 20 ISSR primers,about 82.2% being polymorphisms.Fourty-eight germplasms were clustered into 5 groups by genetic similar index from 0.52 to 0.98,and the wild species were different from eggplants.Also 44 eggplant cultivars had a high genetic similarity and a narrow genetic diversity.At the same time,the results showed that the cluster was related to the fruit shape of eggplants and origin areas,but not to the fruit colour.