Grapevine Berry Shrivelling, Water Loss and Cell Death: Increasing challenge for growers in the context of climate change
Résumé
Berry shrivel is an important phenomenon that occurs when grape berries lose more water through transpiration and xylem back-flow to the plant than is imported through the phloem during late ripening. 9,17 Berry shrivel can have a signifcant economic impact, reducing yield by more than 25 percent with consequences on berry composition and the resulting wine quality. Its occurrence is expected to increase due to predicted climate change, shifting grape development and ripening into warmer periods. The severity can be accelerated by heat waves and drought events.