Abstract
Tokay clusters were enclosed in black or brown waxed bags after berry set. No coloration developed in the absence of light, and only a small amount of color in the light that penetrated the brown bags. Bagged Thompson Seedless clusters warmed up more slowly during the first part of the day, and cooled off more slowly. Bagging had little or no effect on maturation. Tokay berries colored normally, even if subjected to darkness from the period of berry shatter to the time coloration begins. When light was excluded from portions of clusters by bagging or from portions of berries by wrapping in aluminum foil, only the exposed portions colored. Forty varieties of Vitis vinifera were bagged during the season of growth. All clusters colored about like the unbagged controls except Tokay and Sultanina Rose, which remained green in the dark, and Emperor, which developed only a slight pinkish tinge in the dark.
- Copyright 1960 by the American Society for Enology and Viticulture
Sign in for ASEV members
ASEV Members, please sign in at ASEV to access the journal online.
Sign in for Institutional and Non-member Subscribers
Log in using your username and password
Pay Per Article - You may access this article (from the computer you are currently using) for 2 day for US$10.00
Regain Access - You can regain access to a recent Pay per Article purchase if your access period has not yet expired.