Greengram (Vigna radiata L. Wilczek)

A field experiment was conducted during summer season of 2018 at the college farm, Navsari Agricultural University, Navsari to study the “Production potential of summer greengram [Vigna radiata (L.) Wilczek] to different nutrient management practices under south Gujarat condition”. The soil of the experimental field was clayey in texture having medium to poor drainage, low in available nitrogen and organic carbon and medium in available phosphorus and available potassium.

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An experiment was conducted to study the effectiveness and efficiency of one physical mutagen i.e. gamma rays and two chemical mutagens i.e. ethyl methanesulfonate (EMS) and nitrosoguanidine (NG) in greengram. To study the nature and effect of mutagens in greengram, the percentage of lethality, pollen sterility, frequency of chlorophyll mutations, mutagenic effectiveness, mutagenic efficiency and mutation rates of each mutagen were estimated.

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An experiment was conducted to generate a broad genetic variability through induced mutation using physical and chemical mutagens. Three doses each of gamma rays (20, 40 and 60kR), ethyl methane sulphonate (0.2, 0.4 and 0.6%), nitrosoguanidine (0.005, 0.010, and 0.015%), maleic hydrazide (0.01, 0.02 and 0.03%) and their combinations were administered to the seed of two greengram varieties, Sujata and OBGG-52.

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