study of compatibility of six sweet cherr (prunus avium l.) cultivars with "shoa-o-saltaneh" cultivar

most sweet cherry (prunus avium l.) cultivars are self-incompatible and have problems of ‎fertilization and fruit set. to produce commercial crops they need compatible and suitable ‎pollinizers. the compatibility of “zarde daneshkadeh”, “protiva”, “sorati lavasan”, “haj-yosefy” ‎and “meshkin shahr” cultivars with “shoa-o-saltaneh” as seed parent studied in a randomized ‎complete block design (rcbd) with three replications. the compatibility of various pollens on ‎‎“shoa-o-saltaneh”, studied with two methods of controlled pollination and observation of pollen ‎tube growth with fluorescence microscopy. the results of the controlled pollination method showed ‎that “meshkin shahr” and “protiva” cultivars are compatible and “zarde daneshkadeh”, “sorati ‎lavasan” and “haj-yosefy” are incompatible. the mean of fruit set in “shoa-o-saltaneh” cultivar ‎using pollen grain of “zarde daneshkadeh”, “protiva”, “sorati lavasan”, “haj-yosefy” and ‎‎“meshkin shahr” were 0, 4.2, 0.2, ,0.4 and 15.7 percent respectively. the results show that sweet ‎cherry cv. “shoaosaltaneh” is a self-incompatible cultivar (fruit set = 0) and it needs compatible and ‎suitable pollinizers for fruit set. the microscopic examination of pollinated flowers showed that ‎pollen tube of “meshkin shahr” cultivar reached to the ovary in 96 hours after pollination. these ‎observations confirm the results from field controlled hybridization.‎