Effects of Some Plant Growth Regulators on Bud Burst and Rooting of Vitis Vinifera L. CV. Chaush Cuttings

Abstract

This experiment was carried out to determine the effects of GA₃, (50, 100, 200 and 400 ppm); CEPA (100, 200, 400 and 800 ppm); CCC and B-9 (500, 1000 and 2000 ppm) on bud burst and rooting of Chaush cv. cuttings taken during imposed dormancy (at the end of February under Central Anatolia conditions). GA₃ at 50 ppm, CEPA at all concentrations, and B-9 at 500 and 1000 ppm markedly delayed bud burst. CCC treatments hastened bud growth significantly. All growth regulators had no significant effect on % bud break. GA₃ treatments and B-9 at 1000 and 2000 ppm definitely inhibited root formation. CEPA treatments markedly delayed root formation, decreased % rooting and fresh root weight per cutting. CCC treatments had no effect on bud burst and % rooting but only 2000 ppm markedly increased fresh root weight per cutting.