RT Journal Article
SR Electronic
T1 Effect of Viroids on Growth, Yield, and Maturity Indices of Cabernet Sauvignon Grapevines
JF American Journal of Enology and Viticulture
JO Am J Enol Vitic.
FD American Society for Enology and Viticulture
SP 21
OP 24
DO 10.5344/ajev.1996.47.1.21
VO 47
IS 1
A1 J. A. Wolpert
A1 J. A Szychowski
A1 J. S. Semancik
YR 1996
UL http://www.ajevonline.org/content/47/1/21.abstract
AB The effect of viroids was tested by comparing shoot tip cultured (STC), viroid-free Cabernet Sauvignon to STC vines reinoculated with two grapevine yellow speckle viroids (GYSVd-1 and GYSVd-2) and hop stunt viroid (HSVd-g), and to a commercial selection of Cabernet Sauvignon. Growth and yield components were measured over a three year-period (1991-1993) on mature vines in the Napa Valley. On average, vegetative growth was greater on STC vines as a result of heavier shoots. Viroids did not affect yield components but fruit of STC vines was higher in titratable acidity and lower in pH than STC + viroids. In these own-rooted vines, viroids do not cause recognizable "disease."