Selection for LFZR was the best out of the eight methods for improving LFZ (30.83% **, 24.94% **), SYP−1 (34.04% **, 28.53% **) infection %, and HFC (−15.13% *, −12.03%) from the mid-parent in pop1 and pop2, respectively. The gene discussed is POP1; the disease is infection.