Eighty-one tetraploid cherry selections, including sour cherry (Prunus cerasus L.) and its progenitor species P fruticosa Pall., were compared using simple sequence repeat (SSR) marker analysis to determine the relationship of germplasm collected from Turkey to those collected from Russia and northern and eastern regions of Europe. SSR fragments were produced with all five primer pair - cherry selection combinations. Cherry selections exhibited high levels of polymorphism with 5 to 20 different putative alleles amplified per primer pair. The primer pair PMS 49, isolated from sweet cherry, showed a high level of polymorphism with 20 putative alleles identified. However, SSR analysis was not able to differentiate among some selections.