Non-Parametric Stability Approach for Horticultural Crop Varietal Release

Abstract

An attempt has been made to propose a non-parametric stability index for crop varietal release based on the performance of a line for multiple traits coupled with stability. Efficacy of this index has been demonstrated with real time data. It is evident from the results that the rank based non parametric measures computed based on the relative performance of a genotype as compared to others, may be more practically meaningful to come out with stable lines either for release as variety or as a promising line in the ensuing crop hybridization trails. Measure of importance of the traits worked out may also serve as a selection criterion for the breeders in their future hybridization trails. It is suggested to make use of this method in varietal release program and can be extended for Multi-location trail (MLT) based release of crop varieties.