Black Currant Reversion Virus
Top row, normal black currant leaves
Bottom row, reverted leaves, fewer serrations on the leave edges, reduced number of leaf lobes.
Photo courtesy of Tony Adams and Vicky Knight, HRI, East Malling.
This disease is NOT PRESENT IN NORTH AMERICA. This disease causes economically significant damage by reducing yields of European black currant production.
See: Flower buds are smooth and not as hairy as normal- a flowering season symptom of black currant reversion virus.
See: Flowers have 10 sepals instead of the usual five - a symptom of the severe 'Russian' strain of black currant reversion virus.