Vol. 76 No: 5

Title:
Estimation of genetic diversity of commercial mango (Mangifera indica L.) cultivars using RAPD markers

Authors:
N.V. HEMANTH KUMAR, P. NARAYANASWAMY, D. THEERTHA PRASAD, G.K. MUKUNDA and SURESH N. SONDUR

pp: 529-533

Abstract:
Fifty mango cultivars were screened using Randomly Amplified Polymorphic DNA (RAPD) markers with decamer primers of arbitrary sequence. Out of the 80 primers screened, ten were selected which gave 139 clear and bright fragments. A dendrogram based on Jaccard's co-efficient of similarity implied a moderate degree of genetic diversity among the cultivars used for experimentation. The hybrids which had one parent in common were placed together. In the cluster, alternate bearers and regular bearers formed separate groups, and the members in each group were very closely linked. Another analysis based on Pearson's co-efficient of similarity revealed a high degree of genetic diversity. In both the analyses, 'Mulgoa' was found to be very distinct. This study showed clearly that cultivars from South India unveiled maximum diversity and indicated the potential of RAPD markers for the identification and management of mango germplasm for breeding purposes.

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