STUDY OF POLLEN GRAINS VIABILITY AND GEINATION AND RELATION WITH SELF AND OPEN POLLINATION FOR SEX CULTIVARS FROM APPLE MALUS PUMILA MILL

Abstract

This experiment was conducted in local orchard, Abu-Ghraib district for 2006 season while the second season was carried out in local orchard-Falluja district 60 to the west of Baghdad to study the pollen grains viability and germination and also study the set percentage in self and open pollination treatment for Apple cultivar Anna, Aujami, Sharabi, Hajari, Magrabi and Fatimi.The percentage of pollin viability of Anna pollen grains were significantly superior than other cultivars and the percentage was 90.7% and 95.0% while the percentage of pollen grains germination was 70.53% and 75.26% for both seasons.The percentage of self pollination in the Magrabi cultivar was higher than other cultivars and it reached 25.26% and 28.76%,while this percentage was decreased in the cultivar Anna to 1.96% and 0.00% during both seasons respectively. This percentage was increased in the open pollination for the Fatimi cultivar up to 68.00% and 67.33% while it decreased in Anna cultivar to 27.2 and 28.63% for both seasons respectively.