The study was performed to evaluate promising wheat genotypes of semi-arid wheat yield trial (SAWYT) for seed yield in different areas of Pakistan. Fifty genotypes with two replications were tested at different locations using alpha lattice design. Data was recorded for seed yield (kg ha^-1) for each genotype. Analysis of variance (ANOVA) revealed that there were significant differences (P≤0.05) among these genotypes. Moreover, ANOVA also revealed that the total sum of squares of variation for the environment (E), genotype (G) and genotype × environment interaction (G×E) was 65.90%, 2.35%, and 13.29% respectively. Furthermore Tukey’s HSD all-pairwise comparison test was conducted to evaluate the variability among genotypes and environment on the basis of their mean yield performance. Genotypes 24 and 43 performed well for yield and stability at all ten locations while other genotypes showed location specific performance. In case of environments, E5 and E8 showed better adaptability for all the genotypes. It was noticed that environments E5 and E8 and genotypes 24 and 43 were superior performers for expressing better output. Moreover, the interaction between G×E was demonstrated by the PCA biplot analysis which highlighted the best genotypes for best environments. All the genotypes exhibited better adaptability in environments E5 and E8. So these locations were suggested as suitable environments for wheat cultivation. In conclusion, it is recommended to consider using environment E5, E8 and genotypes 24 and 43 as selection criteria for developing high-yielding and stable wheat cultivars, as they showed promising performance across multiple locations and environmental conditions.

Keywords: Wheat, yield, environment, stability, genotype × environment interaction