Final diagnosis


Potato virus S (PVS)

Vein deepening, roughening and bronzed appearance of a potato leaf infected by <b><i>Potato Virus S</i></b> (PVS) (on the right); healthy potato leaf (on the left).
Tips of the leaflets inclined downwards of a potato plant. <b><i>Potato Virus S</i></b> (PVS)