Genotype - Environment Interaction and GGE bi-plot Analysis for Grain Yield, Yield Components, and other Agronomic Traits in Bread Wheat (Triticum aestivum L.)

This research was carried out to identify high-yielding and stable genotypes from 160 bread wheat genotypes using GGE biplot analysis during 2023 and 2024 cropping seasons at two locations. The experiment was conducted using an alpha lattice design with two replications. Genotype, environment and genotype × environment interactions (GE) were found statistically significant at p≤0.0001 level for all investigated traits. Among the tested genotypes, G84, G146, G52, G34 and G48 were identified as the top five best-yielding and highly stable genotypes. Among the tested environments, Dabat 2024 was identified as an ideal environment for grain yield performance evaluation. Environmental clustering identified two mega-environments and this information is highly valuable for breeders in selecting appropriate genotypes for both specific and broad adaptations within wheat breeding programs.