The mutagenic effects of different concentrations of sodium azide (0.01%, 0.02% and 0.03%) on winged bean (Psophocarpus tetragonolobus (L.) DC.) varieties II-EC-178313 and 2I-EC-38825 were investigated. The characters studied include ; days to flowering, days to maturity, plant height, number of pods per plant, number of seeds per plant and hundred seed weight in M2 and M3 generation. Both negative and positive shifts in mean values were recorded as a result of the chemical treatment. The results indicate the possibilities of evolving higher yield variants through proper selection. Thus economically important characters like days to maturity, number of pods per plant, number of seeds per plant and hundred seed weight in M3 generation offer scope for selection and improvement.
