Fig. 2. The possible segregation patterns in the F₁, F₂, F₃, and BC₁F₁ of crosses between Fagropyrum homotropicum homostyly (h) and F. esculentum thrum (t) using the following gene notation: three alleles at the first locus, S thrum, 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 thrum plants are (1) SsScSc, (2) Ssscsc, and (3) SsScsc.