Relationship between the physical (middle) and gender-specific genetic maps (left and right) of scaffold 117 in Family 545. This scaffold was positioned in the peritelomeric region of chromosome XIX. We detected recombination suppression in the upper 706-kb region of this scaffold containing an overabundant number of NBS-LRR genes. In contrast, the lower 257-kb region is rich with recombination hotspots in both the maternal and paternal parents. Moreover, genotyping revealed more heterozygous loci in the maternal genotype than in the paternal genotype on this scaffold. Values in parentheses are χ2 statistics for tests of segregation distortion. Alleles from the maternal parent showed strong and consistent segregation distortion, whereas alleles from the paternal parent generally conformed to Mendelian expectations (χ2 critical value = 3.84 for α ≤ 0.05).
