A peach linkage map integrating RFLPs, SSRs, RAPDs, and morphological markers

A linkage map was obtained using a BC1 progeny (Prunus persica x (P. persic a x P. ferganensis)). The map is composed of 109 loci (74 RFLPs, 17 SSRs, 1 6 RAPDs, and two morphological traits) distributed in 10 linkage groups. Lo ci, segregating in five different ratios, were integrated in the map with J oinMap 2.0 software. The map covers 521 cM of the peach genome. The average distance between adjacent loci is 4.8 cM. Two monogenic traits, flesh adhe sion (F/f) and leaf glands (E/e), were placed on the map. Thirty-two loci i n common with a saturated linkage map of Prunus allowed a comparative analy sis to be made between the two maps. Homologies were found among the respec tive linkage groups. No relevant differences were observed in the linear or der of the common loci.