Pear vein yellows
Disease
Pear vein yellows
Apple Stem Pitting Virus (ASPV)
Distribution: Common to all fruit-growing regions in eastern North America; it is the most common virus disease of pear.
Photos
Faint yellow vein banding with red mottling.
William Howell, Washington St. Univ.
A
Faint, yellow vein banding, particularly of the secondary veins on current year’s growth, is the most common symptom. Red mottling or the development of necrotic spots of various intensities may also accompany vein-banding symptoms (A); the specific symptoms are dependent upon the particular strain of the virus.