Table 2. Segregation ratios and association with HR phenotype of five markers used to genotype the whole BC1S1 population (n = 695). Alleles at each marker are given a symbol based on the phenotype of the accession from which they derive: ”R” is for the SF48-O1 allele, the resistant parent. ”S” is for the DG1-S1 allele, the susceptible parent.