A similarity matrix based on the proportion of shared RAPD fragments was used to establish the level of relatrelatedness between improved cultivars. The pairwise Jaccard’s coefficients for the genetic similarities among the 16 cultivars are presented in Tab. 2. Relatively high similarity index was observed in ‘Ghaem-1’ vs ‘Ghaem-2’, ‘Champa’ vs ‘Amol-3’, ‘Fajr’ vs ‘Nemat’, ‘Shafagh’ vs ‘Sepidrood’ cultivar pairs comparing to the other cultivar pairs. The lowest similarity index were observed in ‘Hashemi’ vs ‘Pouya’ (0.59) followed by ‘Hashemi’ vs either of cultivars ‘Neda’, ‘Champa’, ‘Amol-3’ and ‘Ghaem-1’ (Tab. 2).