Melia dubia, an important agroforestry tree species,
although it has its diversity hotspot in north-eastern
states of India, it has been found to be dispersed in
various other states as well. Therefore, to detect gene
flow between populations, 185 genotypes from different geographical origins were sampled to identify and
study the occurrence of admixtures using 60 Simple
Sequence Repeats (SSRs) generating definite and reproducible bands. Bayesian structure analysis grouped
genotypes into 6 (best ∆K = 6) genetic groups. Through
membership likelihoods (Q >/< 0.60), admixture analysis revealed 175 genotypes to be highly pure, whereas
the remaining 10 were mixed indicating genetic mixing. The present study highlights the efficiency of SSRs
for the molecular portrayal of M. dubia and assessing
its genetic diversity for genetic improvement through
effective breeding schemes.