Genotype x Environment Interaction and Stability Studies in Late Sown Bread Wheat (Triticum aestivum L. em Theil)

Abstract

Forty nine genotypes of wheat were evaluated in three different environments for number of seeds/spike, 1000grain weight, number of productive tillers/m2 and grain yield/plot. Mean performances between genotypes and environments were significant indicating substantial variability among genotypes and environments for all the characters except number of productive tiller/m2 • Highly significant variance due to environment + (GxE) revealed that genotypes interacted considerably with environmental conditions. Though both linear and non-linear components of GxE interaction played important role in the expression of number of seeds/spike and 1000-grain weight, the linear component was larger in magnitude. Number of productive tiller/m2 and grain yield/plot showed highly significant variance due to non-linear component. Considering the three parameters of stability for each character, the genotypes namely PS 461, DW 1104, DL 97-8, DW 1106 and HP 1744 were found to be stable across the environments for yield as well as component traits.