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Los potenciales hídricos de las hojas soleadas fueron menores que los de las hojas sombreadas, alcanzando valores mínimos de ca. En Junio de 2004, K fue determinada para árboles 'Bing'/'Gisela® 5' de 10 años de edad, a partir de mediciones simultáneas de intercambio gaseoso del follaje en forma integrada y potenciales hídricos (Ψ) de hojas individuales (soleadas y sombreadas) y del xilema. Key words: plant water relations, Prunus avium, transpiration, water potential, whole-canopy gas exchange.Ĭomo un paso necesario para la comprensión de la extracción de agua desde el suelo y las relaciones suelo-agua-planta, los componentes de la conductancia hidráulica (K) en árboles adultos de cerezo ( Prunus avium L.) fue evaluada in situ con un método basado en una analogía de la Ley de Ohm. Ψ was observed, suggesting that water storage within the tree is not a significant component of sweet cherry water balance. A weak hysteresis pattern in the daily relationship between whole-canopy transpiration (weighted sunlit and shaded leaves) vs. The analysis of tree K components showed that it was higher on the stem-leaf pathway (150 ± 50 mmol s -1 MPa -1), compared to the root-stem component (100 ± 20 mmol s -1 MPa -1), which is in agreement with literature reports for other fruit trees. Average total hydraulic conductance was 60 ± 6 mmol s -1 MPa -1, presenting a slight decreasing trend as the season progressed. Leaf water potential of sunlit leaves was lower than shaded leaves, reaching minimum values of ca. In June 2004, K was determined for 10-yr-old 'Bing'/'Gisela® 5' trees, from simultaneous measurements of whole canopy gas exchange and leaf (sunlit and shaded) and stem water potentials (Ψ). Accepted: 20 April 2009.Īs a necessary step towards understanding soil water extraction and plant water relationships, the components of hydraulic conductance (K) of mature sweet cherry ( Prunus avium L.) trees were evaluated in situ based on a Ohm´s law analog method. Partial results of this work have been presented in the V International Cherry Symposium, Bursa, Turkey, 2005, and in the V Congreso Internacional de Ingeniería Agrícola (CIACH), Chillán, Chile, 2006. *Corresponding author ( State University, Biological Systems Engineering Department, Pullman, Washington, 99163, USA.ģIrrigated Agriculture Research and Extension Center, WSU-Prosser, WA, 99350, USA. Ricardo Oyarzún 1, Claudio Stöckle 2, and Matthew Whiting 3ġUniversidad de La Serena, Departamento Ingeniería de Minas, Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Benavente 980, La Serena, Chile. It does not store any personal data.Chilean Journal of Agricultural Research 70(1):58-66 (January-March 2010)Īnalysis of Hydraulic Conductance Components in Field Grown, Mature Sweet Cherry TreesĪnálisis de los Componentes de Conductancia Hidráulica en Árboles Maduros de Cerezo Dulce en Condiciones de Campo. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin.
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