Genotype X Environment Interaction for Yield and Maturity In Soybean

Ten genetically diverse soybean strains, derived from six different crosses, along with three checks were evaluated for genotype x environment (G x E) interaction for yield and maturity under eight environments. The pooled analysis of variance for both the traits indicated highly significant differences between genotypes, environments and G x E interaction. Significant G x E interaction suggested the linear function of the additive environment effects and allowed for evaluation of genotypes for stability across the environments. The investigation revealed that the genotypes P1-1-1-1 (PK1053 x P7-1-1), P12-2-1 (SL284 x Bragg), P1–4 (SL284 x Bragg) and P4-1-2-3-3 (Himso333 x NRC2) were desirable and stable across the environments, while the strain P1–3 (SL284 x Bragg) was responsive to poor environments for seed yield. The genotypes, P12-3-3 (SL284 x Bragg) and P4-1-2-3-3 (Himso333 x NRC2) were the most stable across the environments for early maturity, whereas the genotype P1-1-1-1 (PK1053 x P7-1-1) was adapted to poor environments. Overall, the genotypes P1-1-1-1, P12-2-1, P1–4, P4-1-2-3-3 and P12-3-3 and P4-1-2-3-3 exhibited stability and general adaptability across the environments for high yield and early maturity, respectectively.