Vol. 5, Issue 1 (2020)
Studies on genetic variability induced by chemical mutagens on seed characters in winged bean [Psophocarpus tetragonolobus (L) DC]
Author(s): AS Sonavane
Abstract: In the present investigation two cultivars/varieties of winged bean (Psophocarpus tetragonolobus (L.) DC. namely II-EC-178313 and 2I-EC-38825 were used for mutagenic treatment of Ethyl methane sulfonate (EMS) and Sodium Azide (SA) to study the effect on hundred seed weight, seed coat colour and development of anthocyanin pigment on stem (anthostem mutant) characters. In both the cultivars/varieties of winged bean in M2 and M3 generation a mixed trend of positive and negative shift in mean values was observed in all the mutagenic treatments for the number of pods per plant and hundred seed weight. In the present study the anthostem mutant as well as the mutants which shows variation in seed coat colour were observed in both the cultivars/varieties of winged bean. The heritability assessed for days to first pod bearing, number of pods, hundred seed weight and seed yield per plant in M2 and M3 generation in both the cultivars/varieties of winged bean. The high estimates of heritability in yield and yield characters have been found to be useful from plant breeders view point as this would enable him to base his selection on the phenotypic performance.