Most apple cultivars are fruitless on their own, and only if they are pollinated by another compatible cultivar, sufficient fruit set and a suitable crop will result. This experiment was conducted to select the most proper pollinizer for two commercial Iranian apple cultivars of Golab-kohanz and Shafee-abady, favorite because of their special taste and aroma. The effects of five pollinizers, Golab -sahneh, Golab-kohanz, Shafee-abady, Nayon-arangeh, Khorsijan and also open pollination on quantitative and qualitative characteristics of Golab-kohanz and Shafee-abady apple cultivars were studied. The results showed that pollinizers significantly affected the percentage of fruit set, fruit weight and total sugar content in Golab-kohanz c.v. The highest percentages of fruit set, fruit weight and total sugar content were obtained from pollination by Shafee-abady. Pollen sources had significant effect on the percentage of fruit set, fruit weight, diameter, shape, seed number and total sugar content in Shafee-abady c.v. Golab-kohanz as a pollinizer resulted in the highest percentage of fruit set, fruit weight, diameter and sugar content. Fruits, produced by open pollination, carried the highest number of seeds. Golab-kohanz and Shafee-abady were self-incompatible and had a poor fruit set following self-pollination. According to the results Shafee-abady and Nayon-arangeh cvs. are the best pollinizers for Golab-kohanz, while Golab-kohanz and Golab-sahneh are found to be the most appropriate pollinizers for Shafee-abady.
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