STABLE GENOTYPES OF RICE FOR SODIC SOILS

Abstract

Stability parameters based on 24 promising rice genotypes were estimated under sodic soil for various traits. The genotypes were severely influenced by the varying levels of sodicity and the G x E interaction was highly significant for all the characters indicating the differential response of the rice genotypes in different sodic environments. Both linear and non- linear components of variation were significant for day. to 50% flowering, height and grain yield, while only non-linear component of variation was found to be significant for ear bearing tillers. The salt tolerant rice variety CSR 18 appeared to be the most stable and ideally adaptable cultivar in all the varying stress enviomments. Other rice genotypes like CSR 11 and CSR 10 proved to be the best adaptable genotypes in highly deteriorated sodie soils. Hence these genotypes could judiciously be used in breeding programme for improving the productivity of rice in sodie soils.