Co-Authors:
Shulman, Y., Institute of Horticulture, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Nir, G., Institute of Horticulture, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Fanberstein, L., Institute of Horticulture, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Lavee, S., Institute of Horticulture, Agricultural Research Organization, Volcani Center, Bet Dagan, Israel
Abstract:
Cyanamide (H2CN2) solutions and calcium cyanamide (CaCN2) suspensions at 0.25-1.25 M caused a rapid bud opening when applied to dormant intact buds of grapevine (Vitis vinifera L.). The H2CN2 had a more potent effect than the CaCN2. It is suggested that CaCN2 undergoes a partial hydrolysis to hydrogen cyanamide and cyanamide ions which can be the active form and react as the H2CN2 products. H2CN2 and other treatments such as wounding, hot water, dinitro-ortho-cresol (DNOC) and thiourea, increased sprouting of grapevine cuttings. Apart from thiourea, all the treatments enhanced respiration. The involvement of dormancy in blocking respiration and its possible removal is discussed. © 1983.