APPEARANCE OF A DISEASE ON JAPANESE PLUM VARIETIES IN GREECE RESSEMBLING THAT OF CHLOROTIC LEAF ROLL: TRANSMISSION OF THE DISEASE BY GRAFTING

In the last years a serious disease on Japanese plum varieties has been observed in the Naoussa area whose the main symptoms are early bud break, discoloration of cambial zone, bark and wood necrosis, gumming and stem pitting. The symptoms of that disease are very like to these of chlorotic leaf roll. The disease has been transmitted by grafting to trees of plum, peach and apricot. Therefore it is most likely that its pathogen is a virus or mycoplasma.