Accumulation of Ca in several fleshy fruit is often supposed to depend, among others, by climatic variables
driving fruit transpiration. This study tests the whole causal chain hypothesis: VPD
→
fruit transpiration
→
Ca accumulation. Also there are evidences that relationship between fruit transpiration and Ca
content is not always clear, hence the hypothesis that low VPD reduces the fraction of xylemic water
destined to transpiration was tested by examining the water budget of fruit