An integrated DArT and SSR genetic linkage map of T. monococcum . The vertical bars represent the chromosomes of T. monococcum. The codes on the left are the DArT and SSR marker loci, with corresponding map locations in accumulative genetic distance (cM; Kosambi) on the right. The discrete segments of the vertical chromosomal bars are colour-coded according to the allele colour in the figure legends. He stands for alleles heterozygous for female (MDR308) and male (MDR002) alleles, c for the female (MDR308) alleles in homozygous or heterozygous forms, d for male (MDR002) alleles in homozygous or heterozygous forms, and - for unknown alleles, respectively.