Fig. 3. Average phenotype values in groups classified based on the genotype combinations of DNA markers linked to pairwise epistatic genes. 1 = maternal homozygote, 2 = paternal homozygote. RZ516 in Panel B, RM164 in Panel D, and RG101 in Panels H, I, and J represent qHUS-6, qSTS-5, and qFLS-1, respectively.