highly significantp ≤ 0.001
Genotypic Variation and General and Specific Combining Ability Analyses Under each and across the research conditions, G, E, GEI, set (groups of five inbred lines with different genetic backgrounds, each serving as both a male in one set and as a female parent in another set), and set by E interactions were highly significant ( p ≤ 0.001 ) for GY and other traits ( Table 1 and Table 2 ).