Genotypic distribution of QTL in the fth family under four marker types in mapping interval (k, k+1), adapted with modification from Table 1, Li et al. (2007).

Note: , where nf is the size of the fth family. Qf is the allele in the fth parent, and Q0 is the allele in the common parent. , , , and , where , and are the recombination frequencies in the fth family between marker j and the putative QTL, between the putative QTL and marker j+1, and between markers j and j+1, respectively. “+” and “-” denote two types of homozygote for the marker genotype. and represent the distributions for the two QTL genotypes QfQf and q0q0 in the fth family, respectively. All missing marker types were assigned to either the common parent genotype, or the non common parent genotype through an imputation algorithm that considers the linkage relationship between markers within each family [37]; thus this table assumes no missing genotypic data.