Accelerated ageing test was carried over in four rice fallow blackgram varieties viz., LBG 20, VBN I, ADT 3 and ADT 5. The seeds were subjected to 15% moisture content and stored at 45 C. Periodically seeds were taken out and subjected to observations like germination percentage, seedling vigour, speed of germinatiop and electrical conductivitY. The results revealed that VBN. 1 is good storer, have more viable and vigorous seeds as compared to others. The study also mdlcated that electrical conductivity could be taken as an indicator of seed viability in blackgram.