Induced mutagenesis in Green gram (Vigna radiata (L.) Wilczek)

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Research Paper 12/01/2023
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Induced mutagenesis in Green gram (Vigna radiata (L.) Wilczek)

V. Prabakaran, P. Manivel, S. Parvathi, S. Palanivel
J. Bio. Env. Sci.22( 1), 66-73, January 2023.
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Induced mutagenesis was carried out in an important protein rich pulse crop (Vigna radiata (L.) Wilczek). The seeds of green gram variety Co-6 were treated with different concentrations of sodium azide. The mutagen treated seeds were sown in the field to observe M1 characteristics. The sodium azide treated seeds were subjected to amino acid analysis. Totally 19 amino acids were recorded in control and sodium azide treated samples. In the process of sodium azide treatments a few amino acids were increased and some amino acids were decreased than control. The M1 parameters such as germination and survival percentage, plant height, days taken for flowering, number of pods/plant, length of pods, number of seeds/pod and hundred seeds weight were decreased with increasing concentrations sodium azide and all the growth parameters showed negative trend when compared to control. The M1 seeds were collected separately based on concentrations of sodium azide and stored for raising next generation after the harvest. The M1 seeds were sown in the field to raise M2 generation, and in M2 population, the different types of chlorophyll and viable mutants were noticed, such as chlorina, xantha, viridis, and viable mutants such as tall, dwarf, leaf, pod and early flowering mutants were noticed in various treatments of sodium azide. In addition with chlorophyll and viable mutants several initial leaflet modifications like trifoliate, tetrafoliate and pentafoliate leaflets had been observed in mutagenic treatment with sodium azide. The present study is a basis for evolving mutant varieties in green gram with altered agronomic traits.


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