The positive effect of skin transpiration in peach fruit growth

<b>Nutritional status, yield and composition of peach fruit subjected to the application of organic compost

“…A portion of the N taken up by the roots can be distributed to the fruits, which increase their DM throughout the vegetative and productive cycle of the peach tree and, consequently, serve as a N sink (Baldi et al, 2010c;Morandi et al, 2010;Rosa et al, 2009). However, during the 2008 crop season, the application of organic compost did not affect the total P, K, Ca, and Mg contents in the fruits (Table 5), which agreed with the results of the total contents in the whole leaves (Table 4).…”

Fruit Transpiration: Mechanisms and Significance for Fruit Nutrition and Growth

“…However, recently a role of fruit water loss for the phloem unloading into fruit has been proposed. Water losses induce a decrease in fruit water potential (more negative) via an increase in the osmotic concentration and a decrease in the turgor pressure (Morandi et al, 2010b). In this physiological model, as more water is lost by a fruit, more water can be drawn from the phloem and the xylem streams into the fruit itself.…”

“…However, other regulatory factors, like environmental conditions, related to time of the day, and stem/fruit water potential gradients, may affect fruit inflows. During the central part of the day, the xylem import to the fruit is low, likely due to the high amount of water directed to transpiring leaves, which reach lower water potentials (Morandi et al, 2010b). Xylem inflows cannot balance the high transpiration water losses, with the consequence that fruit shrink (Morandi et al, 2007), increase their concentration and decrease their turgor pressure.…”

“…Xylem inflows cannot balance the high transpiration water losses, with the consequence that fruit shrink (Morandi et al, 2007), increase their concentration and decrease their turgor pressure. This may facilitate translocation and bulk flow phloem unloading into fruit tissues relating fruit transpiration to phloem import, hence transpiration may be viewed as important in determining fruit daily imports of water and dry matter (Morandi et al, 2010b).…”

“…Applying the same cubic model to the K results gave an r 2 value of only 0.13. Morandi et al, 2010b).…”