Genetic divergence between sub-accessions of the melon using molecular markers

The melon (Cucumis melo L.) is one of the most important horticultural crops in northeast Brazil. Thecharacterisation germplasm an effi cient process for managing plant genetic resources, as it contributes to better conservationand improved use breeding programs. In present study, divergence between sub-accessions takenfrom traditional agriculture semi-arid region Brazil was evaluated using ISSR and RAPD markers, verifying level ofagreement with botanical classifi cation. Twenty-six preserved Active Germplasm Bank Cucurbitaceae forthe Brazil, located at Embrapa Semiárido Petrolina, Pernambuco, were analysed. binary matrix molecular datawas used obtain dissimilarities complement Jaccard index. representedin dendrograms generated UPGMA method. Twenty-eight primers 26 polymorphic. A totalof 686 fragments obtained, which 451 mean polymorphism markers greater thanthat markers. number considered suffi accurately determine diversity. ISSRdendrogram allowed formation three groups, dendrogram, four joint groups. Thestudy demonstrated variability sub-accessions, strong association characterisation madeby taxonomic cation genotypes under study.