Comparative multimodal statistical analysis for Yield Stability in Mutant populations of Rice (Oryza sativa L.) var. ADT (R) 47

Rice is an important staple food for half of the world’s population. Genetic erosion was caused by the development of high-yielding cultivars and the extensive cultivation of these kinds. Mutation breeding is promising not only for creating and utilizing the new variability but also an indispensable approach through which yield might be improved without altering the existing desirable characters. Induced mutations, have offered a single and short alternative to conventional breeding that includes isolation, screening, selection and testing generation after generation. A multi-model approach employing BLUP-based simultaneous selection, to assess the stability and performance of ADT 47 mutants genotypes with respect to the grain yield was performed. All members of the AMMI (Additive Main Effects and Multiplicative Interaction) family were less accurate than BLUP (Best linear unbiased prediction). BLUP approach involved the estimation of Harmonic mean of genotypic values (HMGV) which is used to infer both yield and stability, Relative performance of genotypic values (RPGV) involved in the estimation of mean yield and genotypic adaptability), harmonic mean of the relative performance of genotypic values (HMRPGV) tangled to evaluate stability, adaptability, and yield simultaneously. Comparing all the calculated indices, mutants viz., 160-39-1, 200-30-3, 250-36-1, 200-69-1 were highly stable for plant yield along with ADT47 control variety.