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Potato spindle tuber pospiviroid

(click on the images to enlarge them)

 

Potato spindle tuber viroid (PSTVd):
healthy and diseased tubers, cv. Nicola
Plant Protection Service, Wageningen (NL)

Symptoms of PSTVd.
Biolog. Bundesanstalt
Braunschweig (DE)

Reduced size and yield of potato
tubers (healthy tubers on right).

   

Symptoms in pot-grown tomato plant.
CSL, York (GB) - British Crown

Typical aerial symptoms of PSTVd on
potato cv. Kennebec (in centre); healthy
plants (left and right) - R.P. Singh (CA)

PSTVd on potato; top to bottom: cv. Saco healthy, Saco infected, cv. Kennebec healthy, Kennebec infected - USDA (US)

 

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