ISHS Acta Horticulturae 395: Dormancy and the related Problems of Deciduous Fruit Trees
REST-BREAKING OF 'DELAWARE' GRAPE |
| Author: | H. Gemma |
| Keywords: | ACC, Budbreak, Dormancy, Ethylene, Grape, Low pressure |
| Abstract:
Numerous studies were conducted to determine the effects of low temperature and other environmental factors on releasing 'Delaware' grapes from rest. Although, low atmospheric pressure (76 Torr) was not as effective as exogenous applications of ethylene, our results indicate that 1–3 weeks of atmosphere stress can affect budbreak. This response is ascribed to a physiological phenomena mediated by ethylene, resulting from the conversion of 1-aminocyclopropane-1-carboxylic acid (ACC). It is suggested that ethylene may be the rest-breaking hormone. | |
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