Poster Session: Biology and Disease Management - Bacteriology
10-P
Effect of Necrosis and Crown Gall Caused by Agrobacterium vitis on Graft Take and Root Development of Grapevines.
D. CANIK OREL (1), T. J. Burr (2)
(1) Ankara University, Ankara, , Turkey; (2) Cornell University NYSAES, Geneva, NY, U.S.A.
In this study investigated the effects of Agrobacterium vitis caused necrosis and crown gall on graft take of grapevines. Grafts were inoculated with tumorogenic and non-tumorogenic strains that differed according to their necrosis capacity on young grapevine shoots and tumorigenic capacity on grapevines in the greenhouse. Cabernet sauvignon grafts were inoculated with three different cell concentrations of the strains of. In addition the base of the cuttings were also treated with the bacterial suspensions prior to rooting in perlite. Graft take and the presence of crown gall and the degree of root formation and necrosis were determined eight weeks after inoculation. We determined significant effects of the different strains on graft take, the degree of crown gall and on root development and necrosis.