Mapping population comprised 76 F`3` individuals from a cross between accessions from Turkey (G1777) and Iran. Position of centromere inferred by telocentric analysis. A common set of probes mapped on the short arm of chromosome 5 in two populations of T. monococcum and on 5DS in a population of T. aestivum revealed colinear loci (also generally colinear with 5HS in barley). However, the XNor locus had different locations in different species. A = G1777 allele; B = G2528 allele; H = heterozygous; C = B or H; D = A or H; - = missing datum.