Induced Modifications by the Installation of Open Systems on Stem Water Potential and Leaf Conductance in Grapevine and Peach
DOI:
https://doi.org/10.59741/agraria.v10i3.471Keywords:
Prunus persica L. Batsch, Vitis vinifera L., transpiration, lysimeter, water stressAbstract
By studying fruit tree transpiration in field-wide tree, it is necessary to consider the use of open systems for real estimate transpiration rates to provide reliable water consumption similar to that which would a lysimeter. The aim of this study was to evaluate the modifications in duced by the installation of open systems on stem water potential and leaf conductance in vine and peach, and the peach tree transpiration. We used peach (Prunus persica L. Batsch) trees cv. O Henry on a root stock Montclar and grapevine (Vitis vinifera L. cv. Pinot noir) on SO4 rootstock, which were placed in open systems, while a third was left open to air as a witness. The variables evaluated were temperature, stomatal conductance, water potential and transpiration. The temperature inside the chamber was consistently superior to the external environment. Peach trees placed within chambers sowed a stem water potential more negative than the control. Stomatal conductance of the vines were placed in the chambers showed higher values than outdoor plants. It is concluded that the location of an open system significantly increases the transpiration of the plants contained therein. Likely, the increase in transpiration, detected with the use of an open system can induce a certain level of water stress in the case of sensitive plants to evaporative demand.
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