Further viruses of Prunus in New Zealand

Abstract

The symptoms and incidence of dark green sunken mottle of peach are described, and the relationship of this virus to apple chlorotic leaf spot virus is discussed. Necrotic rusty mottle virus was found infecting three sweet cherry trees and strawberry latent ringspot virus one tree. Sour cherry yellows symptoms were induced in ‘Montmorency’ sour cherry by dual infection with necrotic ringspot and prune dwarf viruses. A previously undescribed transmissible disorder of apricots is recorded. Peach seedling chlorosis is suggested as the name for leaf symptoms transmitted to peach seedlings from symptomless plum and cherry trees.