Development of Novel Blackgram (Vigna mungo (L.) Hepper) Mutants and Deciphering Genotype × Environment Interaction for Yield-Related Traits of Mutants

Blackgram (Vigna mungo (L.) Hepper) yields are noticeably poor due to a shortage of improved varieties and an aggravated narrow genetic base. An attempt was made isolate novel blackgram mutants by selecting for yield-related traits derived through gamma irradiation testing the mutant genotype’s stability across different environments. The irradiated populations M1-M5 were established in background cultivars ADT 3, Co 6, TU 17-9. Desirable selected from M3 M5 generations. It observed M2 that rays showed higher mutagenic efficacy generated good inherited variance traits. M4 three divergent groups each cultivar revealed clustering analysis. number pods per plant, clusters cluster strong direct association with single plant yield could be considered as selection G × E interactions than variation genotype yield. Limited environmental interaction genotypes G24, G16, G36, G30, G17, AMMI, G18 G29, GGE. GGE biplot environment-specific G13 E1 (Aduthurai), G7 E2 (Kattuthottam), G34 E3 (Vamban) also portrayed highly discriminating (E3) representative (E2) Selected this research useful stocks improvement breeding.