GENETICS OF SEED LUSTER AND JOINT INHERITANCE OF SEED-COAT COLOR AND SEED LUSTER IN MUNGBEAN (VIGNA-RADIATA (L) WILCZEK)

A digenic duplicate interaction was involved in the inheritance of seed lustre (dull vs. shiny), dullness being dominant over shiny. While the expression of shiny lustre needed homozygosity of recessive alleles at both the loci, presence of dominant gene at either of the loci was enough for developing dull seed lustre. Symbols, D1 and D2 are proposed for the genes of dullness, and d1 and d2 for their recessive alleles. An analysis of the joint segregaion of seed-coat colour and seed lustre revealed that the loci for the former acted and inherited independently of those for the latter.