Induced Viable Mutants in Vigna mungo (L.) Hepper

Mutations were induced in blackgram (Vigna mungo (L.) Hepper) varieties namely ADT 3, ADT 5 and APK 1. Different types of macro mutants and micro mutants were screened in M2 generation. The frequency and the spectrum of the viable mutants were estimated in M₂ generation both in M₁ plant basis and M₂ seedling basis. The highest frequency of viable mutants was recorded in ADT 3. Mutation spectrum was much wider at 60kR and it was narrow at 50kR. The variety ADT 5 had recorded wider spectrum at 60 kR and APK 1 showed higher spectrum at 50kR.