RT Journal Article
SR Electronic
T1 Effect of Defoliation on Carbohydrate Metabolism in Thompson Seedless and Perlette Grapevines
JF American Journal of Enology and Viticulture
JO Am J Enol Vitic.
FD American Society for Enology and Viticulture
SP 347
OP 349
DO 10.5344/ajev.1980.31.4.347
VO 31
IS 4
A1 Bruno Marangoni
A1 Kay Ryugo
A1 H. P. Olmo
YR 1980
UL http://www.ajevonline.org/content/31/4/347.abstract
AB Perlette and Thompson Seedless vines were hand defoliated on August 1, just prior to harvest of the Perlette crop. Two other sets of Thompson Seedless vines were defoliated by hand and a chemical defoliant, Endothall, on September 13, four days prior to harvest. The total carbohydrate content on shoots of Thompson Seedless defoliated early was temporarily depleted. The depletion is attributed to the drain caused by the maturing crop. The reserves were partially replenished by the new leaves which emerged. Late defoliation had little influence on the carbohydrate reserves and did not induce new shoot growth.