Vol. 82 No: 5

Title:
Morphological and molecular analysis of genetic diversity in Jackfruit

Authors:
LUKE SIMON, S. SHYAMALAMMA and P. NARAYANASWAMY

pp: 764-768

Abstract:
RAPD markers were used to estimate genetic diversity in 12 high-yielding jackfruit (Artocarpus heterophyllus Lamk.) accessions obtained from different locations in southern India. Marker data were compared with morphological data obtained over three successive seasons. PCR-amplifiable DNA was isolated using the CTAB method and 171 amplified fragments were obtained using 23 random primers. The genetic dissimilarity matrix was calculated based on Squared Euclidian Distances, which revealed a maximum genetic distance of 7.9% between a clone of ‘Mottavarica’ (‘M₀’), and ‘Chandrahalasu’ from distant locations, while the minimum genetic distance (5%) was between the genotypes (‘M₀’) and ‘Kerala’, indicating their similar geographical origin. Ward's method of cluster analysis grouped all individuals on the dendrogram into two major clusters according to their geographical location. The present study showed low-to-moderate genetic diversity among the 12 jackfruit accessions, which will assist in the identification and management of jackfruit germplasm for breeding purposes.

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