AN ALTERNATIVE APPROACH TO ANALYSIS OF GENOTYPIC ADAPTATION IN RICE

Abstract

Twelve rice varieties grown under 30 environments were evaluated for their adaptation through different approaches. Stratification of environments and considering mean yield of the genotypes in different grades of environment, the metroglyph analysis was done which showed that five genotypes were agronomically superior with wide adaptation and one with specific adaptation to favourable environments. This metroglyph analysis of stratified environmental average is considered to be a simple method which may be used even in preliminary evaluation of crop genotypes for their adaptation.