highly significantp < 0.001
Analysis of Variance across Stress and Non-Stress Environments Results of the combined analysis of variance (ANOVA) for grain yield and other traits across the multiple stress environments showed highly significant ( p < 0.001) mean squares for environments (E), periods, hybrids (period), hybrids (period) × E interactions, and E × period interactions for all measured traits, except for the period mean squares for ear rot, and E × period mean squares for root lodging and stay green characteristics ( Table 3 ).