Genetic diversity among the gamma ray induced mutants of groundnut, Arachis hypogaea cultivar, TAG 24

摘要

Cultivated groundnut is known to be vulnerable to several stresses due to its narrow genetic base. The present study was carried out to generate genetic variability through gamma ray mutagenesis in groundnut using the most popular, highly productive and widely adapted Trombay groundnut cultivar, TAG 24. In all, 77 true breeding mutants for various characters were isolated. High yielding potential along with different yield contributing parameters of these induced mutants were ascertained across the seasons. Mutant TGM16 produced consistently higher yields across the four generations apart from its superiority in seed size, shelling percentage and oil content. Besides, five mutants distinctively showed an improvement for shelling percentage and ninemutants for seed size compared to parent. Induced mutants were genetically diverse both in rainy and summer seasons due to greater genetic variability created for plant height, pod and seed yield and seed size through gamma ray mutagenesis.