The genus Dendrobium Swartz belonging to tribe Dendrobieae, sub-tribe Dendrobinae of the family Orchidaceae comprises about
1200 species. In India, it is represented by 102 species. Molecular analysis of genetic diversity has been investigated by using
SDS-PAGE and RAPD markers in Dendrobium herbaceum, D. microbulbon, and D. moschatum. Samples collected trom two
different geographical areas i.e., from (Kerala and Karnataka) showed variations in their molecular characters. The sampies
collected from Kerala at an elevation of 985 m showed few and lesser mole cular weights of protein bands, whereas the sampies
collected from Karnataka at an elevation of 825 m showed more number of protein bands and maximum number of protein banas.
The DNA protein bands were more in number and prominent from the samples collected from Karnataka. RAPO and SDS proten
profile data indicate the inter-population diversity in between these two sites. This can be attributed to the ecological ano
climatic conditions prevailed in these two reference sites of South India.