Measurements of leaf blade and berry transpiration were carried out on Cabernet sauvignon (Vitis vinifera L.). At the same time samples of leaf blade, petioles and berries were picked up and their Ca concentration was determined. Leaf blade and berry transpiration rate changed during growth phases of berries. Under lower soil water availability, berry transpiration decreased proportionally to the decrease of leaf transpiration, whereas at higher soil water availability berry traspiration values was not influenced by higher leaf traspiration rate. Final values of transpiration rate had no influence on Ca concentration (mg/g f.w.), or on Ca content (% d.m.) of berries, which confirms previous results obtained in grapes under different environmental conditions and in apple.
Influence of transpiration on Ca-concentration in berries and leaves of Cabernet sauvignon (Vitis vinifera L.).
BOSELLI, MAURIZIO;
1996-01-01
Abstract
Measurements of leaf blade and berry transpiration were carried out on Cabernet sauvignon (Vitis vinifera L.). At the same time samples of leaf blade, petioles and berries were picked up and their Ca concentration was determined. Leaf blade and berry transpiration rate changed during growth phases of berries. Under lower soil water availability, berry transpiration decreased proportionally to the decrease of leaf transpiration, whereas at higher soil water availability berry traspiration values was not influenced by higher leaf traspiration rate. Final values of transpiration rate had no influence on Ca concentration (mg/g f.w.), or on Ca content (% d.m.) of berries, which confirms previous results obtained in grapes under different environmental conditions and in apple.
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