Symptoms of PVY on Potato Varieties
Click on the green, underlined variety name to access the symptom picture gallery for that variety. Picture captions identify the PVY strain and photo location.
|All Red||Freedom Russet||NorDonna||Shepody|
|Alturas||French Fingerling||Norland||Silverton Russet|
|Atlantic||Frito Lay 1833||Pike||Snowden|
|Beacon Chipper||Green Mountain||Ranger Russet||Umatilla Russet|
|Blazer Russet||Highland Russet||Reba||Waneta (=NY138)|
|Cal White||Irish Cobbler||Red Gold||Western Russet|
|Canela Russet||Katahdin||Red LaSoda||White Pearl|
|Chieftain||Kennebec||Red Norland||Yukon Gem|
|Classic Russet||Keuka Gold||Rio Grande Russet||Yukon Gold|
|Dakota Pearl||Langlade||Russet Burbank|
|Dark Red Norland||Marcy||Russet Norkotah|
|Defender||Megachip||Russet Norkotah Line CO 8|
Strains of PVY being found in North America
O - the ordinary or common strain. Typically causes severe symptoms on foliage but no tuber defects. Diagnosed by serological (ELISA) tests as an O strain.
N - the tobacco necrosis strain. Typically causes mild symptoms on potato foliage and no tuber defects. Diagnosed by serological (ELISA) tests as an N strain.
NTN - the tuber necrosis strain. Typically causes mild symptoms on foliage but can cause PTNRD (potato tuber necrotic ringspot disease). Diagnosed by serological (ELISA) tests as an N strain.
N-Wi (N:O) - the recombinant strain. Typically causes mild symptoms on foliage and no tuber defects. Diagnosed by serological (ELISA) tests as an O strain.