Diseases

Plum Pox (Sharka)

Prunus americana Marsh.

American plum (Prunus americana) is an important reservoir host of the Plum pox virus (PPV), capable of maintaining high levels of infection and spreading the virus via aphids.

In the reference 6 varieties crop American plum, where this is mentioned in the description.

The species Prunus americana plays a key role in the epidemiology of the disease, acting as a reservoir for the PPV-D strain. Infection with this virus leads to the appearance of chlorotic rings, spots on leaves, vein clearing, as well as curling and deformation of leaf blades. Under experimental conditions, infected plants show marked suppression of overall growth.

No specific resistance genes to the Plum pox virus have been identified in the American plum, which distinguishes it from a number of cultivars of domestic plum. Due to the species' high capacity to serve as a source of viral load for nearby orchards, control measures in risk zones are limited to the removal of infected wild trees and monitoring the phytosanitary status of planting material.

General information about the subject — on the page Plum Pox (Sharka).

Sources8

Varieties of American plum mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.