The dynamics of radial sap flux density reflects changes in stomatal conductance in response to soil and air water deficit

10 páginas.-- 7 figuras.-- 1 tabla.-- 53 referencias

Detalles Bibliográficos
Autores: Hernández Santana, V., Fernández Luque, José Enrique, Rodríguez-Domínguez, Celia M., Romero Vicente, Rafael, Díaz-Espejo, Antonio
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/127816
Acceso en línea:http://hdl.handle.net/10261/127816
Access Level:acceso abierto
Palabra clave:Irrigation scheduling
Olive
Sap flow
Stomatal conductance
Water stress
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spelling The dynamics of radial sap flux density reflects changes in stomatal conductance in response to soil and air water deficitHernández Santana, V.Fernández Luque, José EnriqueRodríguez-Domínguez, Celia M.Romero Vicente, RafaelDíaz-Espejo, AntonioIrrigation schedulingOliveSap flowStomatal conductanceWater stress10 páginas.-- 7 figuras.-- 1 tabla.-- 53 referenciasWater scarcity in semiarid regions of Europe threatens the sustainability of fruit tree orchards unless irrigation water is optimized and scheduled in deficit irrigation strategies. Stomatal conductance (gs) is one of the best indicators of plant water stress, since it is placed in the crossroad between water and CO2 fluxes at the leaf level. Unfortunately, it is not possible to measure gs automatically and continuously, which reduces its potential for irrigation scheduling. In this work we examined the use of sap flux density (Js) in the outer rings of the sapwood of olive trees as a surrogate of gs. The working hypothesis was that as olive trees are well-coupled to atmosphere because of their small leaves, the ratio of Js to air vapor pressure deficit (D) should correlate well with the dynamics of gs in the canopy. It was also expected that current year, sun exposed leaves were mainly connected to the outer rings of the sapwood, and the oldest, shaded leaves to the inner rings. This was tested by measuring gs in new, sun-exposed leaves vs gs in old, shaded leaves. Both hypotheses were contrasted and our results confirmed that gs can be estimated from Js/D (R2 of the relationships were always higher than 0.8). A wide range of estimated gs values (0.350-0.025molm-2s-1) were derived from Js measurements in an olive orchard under three different irrigation regimes. Results were satisfactory and open the possibility of applying this method to estimate gs and use it either as a reliable water stress indicator or in transpiration and photosynthesis models applied to fruit tree orchards under a wide range of water stress conditions.This experiment was funded by the Spanish Ministry of Science and Innovation, research project AGL2009-11310/AGR and by the Consejería de Economía, Innovación, Ciencia y Empleo, Junta de Andalucía (research project AGR-6456). Dr. Hernandez-Santana benefited from a Juan de la Cierva postdoctoral research fellowship from the Spanish Ministry of Science and Innovation. Thanks are due to the owners of Internacional Olivarera, S.A.U. (Interoliva), for allowing us to make the experiments in the Sanabria orchard.Peer reviewedElsevierMinisterio de Ciencia e Innovación (España)Junta de AndalucíaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201620162016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/127816reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.agrformet.2015.11.013Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1278162026-05-22T06:33:51Z
dc.title.none.fl_str_mv The dynamics of radial sap flux density reflects changes in stomatal conductance in response to soil and air water deficit
title The dynamics of radial sap flux density reflects changes in stomatal conductance in response to soil and air water deficit
spellingShingle The dynamics of radial sap flux density reflects changes in stomatal conductance in response to soil and air water deficit
Hernández Santana, V.
Irrigation scheduling
Olive
Sap flow
Stomatal conductance
Water stress
title_short The dynamics of radial sap flux density reflects changes in stomatal conductance in response to soil and air water deficit
title_full The dynamics of radial sap flux density reflects changes in stomatal conductance in response to soil and air water deficit
title_fullStr The dynamics of radial sap flux density reflects changes in stomatal conductance in response to soil and air water deficit
title_full_unstemmed The dynamics of radial sap flux density reflects changes in stomatal conductance in response to soil and air water deficit
title_sort The dynamics of radial sap flux density reflects changes in stomatal conductance in response to soil and air water deficit
dc.creator.none.fl_str_mv Hernández Santana, V.
Fernández Luque, José Enrique
Rodríguez-Domínguez, Celia M.
Romero Vicente, Rafael
Díaz-Espejo, Antonio
author Hernández Santana, V.
author_facet Hernández Santana, V.
Fernández Luque, José Enrique
Rodríguez-Domínguez, Celia M.
Romero Vicente, Rafael
Díaz-Espejo, Antonio
author_role author
author2 Fernández Luque, José Enrique
Rodríguez-Domínguez, Celia M.
Romero Vicente, Rafael
Díaz-Espejo, Antonio
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Junta de Andalucía
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Irrigation scheduling
Olive
Sap flow
Stomatal conductance
Water stress
topic Irrigation scheduling
Olive
Sap flow
Stomatal conductance
Water stress
description 10 páginas.-- 7 figuras.-- 1 tabla.-- 53 referencias
publishDate 2016
dc.date.none.fl_str_mv 2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/127816
url http://hdl.handle.net/10261/127816
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.agrformet.2015.11.013
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.81155

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