Abstract
Physical (gamma rays) and chemical (EMS) mutagens and combination of these two (Gamma-+-EMS) reduced the percentage of germination, survival, seedling growth, drymatter production and seed fertility in bengalgram with increase in dose of mutagens. EMS produced greater reduction than gamma rays. Combination treatments showed enhanced effect com- pared to single treatments. Among the varieties CO. I was more sensitive than G 62404. A linear dependence for all the characters studied on dosage was evident in both the varieties. The same trend was noted in the induction of chlorophyll mutations. Chemical mutagen was more potent in inducing chlorophyll mutations.
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