Abstract
Several cultivars of Vitis vinifera L. grapevines were exposed to 3.6 ± 2.5 m sec-1 wind for six days or to 10.7 ± 3.0 m sec-1 wind for two days in a phytotron to determine effects on stomatal behavior and vine water relations. Stomatal conductances (Cs) and transpiration rates (Tr) decreased in response to both wind treatments. These responses disappeared within one day for all cultivars when the 3.6 ± 2.5 m sec-1 wind was stopped; however, the effects on Cs and Tr continued for longer periods for some cultivars when the 10.7 ± 3.0 m sec-1 wind stopped. Leaf water potentials were not affected by either wind treatment. When vines were preconditioned with 0.9 to 1.3 m sec-1 winds prior to the 3.6 m sec-1 wind treatment, no differences in Cs and Tr were observed compared to vines not receiving prior wind conditioning.
- Received January 1984.
- Copyright 1984 by the American Society for Enology and Viticulture
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