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Title

Quantifying the photosynthesis limitation imposed by deficit irrigation in olive trees with a novel methodology based on measurements of sap flux density

AuthorsHernández Santana, V. ; Fernández Luque, José Enrique ; Gutiérrez-Gordillo, S.; Montero de Espinosa, Antonio ; Pérez-Arcoiza, A.; Raya-Sereno, M.D.; Díaz-Espejo, Antonio
Issue Date18-Oct-2016
PublisherUniversidad de Navarra
CitationQuantifying the photosynthesis limitation imposed by deficit irrigation in olive trees with a novel methodology based on measurements of sap flux density 43-50 (2016)
AbstractWith the ultimate goal of achieving more resilient agricultural systems through deficit irrigation practices managed with a reliable and sensitive indicator of water stress, we conducted an experiment in olive trees with the following specific objectives: (1) to calibrate and validate a method to estimate stomatal conductance (gs) and photosynthesis (AN) automatically based on sap flux density measurements (Js) measurements and (2) to quantify the AN limitations produced by soil water content and vapor pressure deficit in a super-intensive olive orchard. Results show that gs can be determined from Js measurements directly and that the approach is sensitive enough to allow us inferring how stomata respond to soil water content controlled by irrigation and vapor pressure deficit and quantify their limitation on AN. The main advantages of this method are that it provides absolute values of gs, with physiological meaning to interpret plant water stress and that AN limitation imposed by deficit irrigation can easily quantified from the calculated values.
Description4 páginas.-- 3 figuras.-- 6 referencias.-- Comunicación oral presentada en el XIII Simposio Hispano-Portugués de Relaciones Hídricas en las Plantas “Aprendiendo a optimizar el uso del agua en las plantas para hacer de nuestro entorno un ambiente más sostenible” Libro de resúmenes . 18 – 20 de octubre de 2016 Pamplona (España).-- Organizado por El Grupo de Fisiología del Estrés en Plantas (Unidad asociada al CSIC)
Publisher version (URL)http://hdl.handle.net/10171/47486
URIhttp://hdl.handle.net/10261/159886
Identifiersisbn: 978-84-8081-525-3
Appears in Collections:(IRNAS) Libros y partes de libros
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