The positive effect of skin transpiration in peach fruit growth

Copyright 2010 Elsevier GmbH. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Journal of plant physiology. - 1979. - 167(2010), 13 vom: 01. Sept., Seite 1033-7
1. Verfasser: Morandi, Brunella (VerfasserIn)
Weitere Verfasser: Manfrini, Luigi, Losciale, Pasquale, Zibordi, Marco, Corelli-Grappadelli, Luca
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2010
Zugriff auf das übergeordnete Werk:Journal of plant physiology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Water 059QF0KO0R
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520 |a The effect of fruit transpiration on the mechanisms driving peach (Prunus persica (L.) Batsch) daily growth was investigated. In peach, fruit water losses increase during the season and might play a key role in determining fruit growth. Skin transpiration was reduced during the cell expansion stage by enclosing fruit in plastic bags fitted with holes. In the first year, diameter changes of bagged and control fruit were precisely monitored for 15 days, and percentage dry matter and soluble solids content were determined during the experiment and at harvest. In the second year, midday fruit water potential, daily patterns of fruit growth and of vascular and transpiration flows were monitored. Bagging reduced fruit daily growth on some days, and negatively affected both fruit dry matter percentage and soluble solids content. Fruit transpiration rate was reduced during the midday hours, thus increasing midday fruit water potential and lowering xylem inflows. In accordance with the Münch hypothesis on traslocation, these conditions likely decreased the necessary gradient needed for the transport of phloem sap to sink organs, as in the afternoon, bagged fruit showed lower phloem inflows. These data suggest that skin transpiration in peach has a positive effect on fruit growth, as it enhances fruit phloem import 
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700 1 |a Manfrini, Luigi  |e verfasserin  |4 aut 
700 1 |a Losciale, Pasquale  |e verfasserin  |4 aut 
700 1 |a Zibordi, Marco  |e verfasserin  |4 aut 
700 1 |a Corelli-Grappadelli, Luca  |e verfasserin  |4 aut 
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