Effect of Epibrassinolide, Gibberellic acid and Naphthalene Acetic Acid on Pollen Germination of Some Pomegranate Cultivars

This research was carried out on ‘Caner I', ‘Caner II' cultivars and type ‘26–3' grown at the pomegranate collection orchard located at Dardanos campus of Çanakkale Onsekiz Mart University, Çanakkale, Turkey. Plant growth regulators, epibrassinolide (Epi–B1) at 0.001, 0.01 and 0.1 ppm, gibberellic acid (GA3) at 25, 50 and 100 ppm and naphthalene acetic acid (NAA) at 0.5, 1.0 and 2.5 ppm concentrations were applied to the pollen germination medium. Pollen germination experiments were done using agar in the petri method. Ratios of male (sterile) and hermaphrodite (fertile) flower types were determined on ‘Caner I', ‘Caner II' cultivars and type ‘26–3'. Effects of the plant growth regulators on pollen germination ratios were assessed on both types of flowers. Approximately, 25% hermaphrodite and 75%male flowers were found on the cultivars and the type. The highest pollen germination percentages were obtained from the 0.1 ppm Epi–Bl application.