1. UC IPM
Necrotic strains of <I>Potato virus Y</I> cause the development of necrotic arcs or rings on the surface of tubers. The necrosis extends into the tuber flesh.
Necrotic strains of Potato virus Y cause the development of necrotic arcs or rings on the surface of tubers. The necrosis extends into the tuber flesh.
Credit: Philip B. Hamm