Abstract
This study was designed to define a sampling protocol for fall acclimation experiments in Concord grapevines. Vineyard parameters which were investigated included vine size, number of clusters per shoot, exposure of shoots to sunlight, and node position on current season's growth. Primary buds and canes at the canopy exterior, well exposed to sunlight, were 6.5°C and 6.0°C hardier, respectively, than similar tissues from poorly exposed shoots on the canopy interior. Nodes from basal positions on shoots acclimated sooner than those from apical positions, especially early in the acclimation period (late August) and differences in hardiness between basal and apical positions were as great as 5.5°C for primary buds and 4.5°C for canes. Hardiness differences due to both sunlight exposure and node position were closely and inversely related to water content of the tissues. Neither vine size nor the number of clusters per shoot had an important effect on acclimation.
- Received May 1984.
- Copyright 1985 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.