Fifteen advanced generation mutant lines derived from recurrent mutagenesis (EMS, NG and their combinations) of PB 1, Pusa Sugandha 2 and a popular local scented rice variety Ketakijoha were assessed for seed yield and sixteen physical and cooking quality traits. ORM 250-3 and 228-3 had more longer kernel (9.12mm) than even world's largest kernel (9.04 mm.) genotype PS-4 (Pusa-1121) and the former was also more slender while, the later was breadth-wise equal to PS 4. Induction of mutation in Ketakijoha led to recovery of a very slender kernel (1.55 mm) mutant ORM 242-2 which even excelled in kernel L/B ratio over its grain dimension. ORM 920-3(a PB-1 mutant) and ORM 227-2 (a Pusa Sugandha-2 mutant) with high yield potential and quality features serve as valuable genetic materials their use in further basmati rice breeding programme.