Fig. 1. The possible segregation patterns in the F₁, F₂, F₃, and BC₁F₁ generations of crosses between Fagropyrum homotropicum homostyly (h) and F. esculentum pin (p) using the two-gene model with the following gene notation: two alleles at the first locus, S^h homostyly and s pin; two alleles at the second locus, S_c homostyly and s_c pin. The proposed genotype for F. homotropicum is S^hS^hS_cS_c. The proposed genotypes for F. esculentum pin plants are (1) ssS_cS_c, (2) sss_cs_c, and (3) ssS_cs_c.