Parametri ambientali - traspirazione e contenuto di calcio delle bacche di Cabernet sauvignon [Emilia Romagna].
1994
Boselli M. | Oddi G. | Volpe B.
Studies on relationship between transpiration and calcium accumulation in low transpiration organs like fruits, attained to contradictory results. In order to study some of the factors influencing calcium accumulation in developing grape berries (Vitis vinifera L.) has been carried out a trial on cv. Cabernet sauvignon plants. Leaves were picked up every 15 days to evaluate water status by means of RWC from 20 days after full bloom and until harvest (110 days later). At the same time transpiration of berries at 8 a.m. and 2 p.m. and soil water content were measured. Berries transpiration decreased between 20-110 days after full bloom and was influenced by meteorological condition and soil moisture. Berries transpiration was lower with good soil idratation, when was promoted leaves transpiration. Linkage between transpired water per berry and calcium accumulation in berry was not confirmed. Calcium content in berries was higher at 2 p.m. only until 50-65 days after full bloom, whereas was higher at 8 a.m. after this time.
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