Fig. 6. Gene frequency in the final selected population following 10 cycles of selection. 1, 2, and 3 represent the three genetic models, i.e., partial dominance yield genes (AD1), partial or overdominance yield genes (AD2), and digenic epistasis yield genes (ADE); a, b, and c correspond to the three initial populations identified by gene frequencies 0.1, 0.5 and 0.9, respectively.