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resumen

Resumen
Knowledge about heat acclimation in perennial plants is limited. Our hypotheses were (i) that high temperature during budswell before budbreak elicits acclimation in grapevines that is mediated by greater water transport capacity, and (ii) that water deficit modulates acclimation to high temperature. We compared field grown Malbec grapevines heated before budbreak during 3 or 15 days with untreated controls. We also combined these thermal regimes with two [ver mas...]
dc.contributor.authorGalat Giorgi, Mirta Eugenia
dc.contributor.authorKeller, Markus
dc.contributor.authorSadras, Victor Oscar
dc.contributor.authorRoig Junent, Fidel Alejandro
dc.contributor.authorPerez Peña, Jorge Esteban
dc.date.accessioned2020-09-30T12:21:30Z
dc.date.available2020-09-30T12:21:30Z
dc.date.issued2020-09
dc.identifier.issn0168-1923
dc.identifier.otherhttps://doi.org/10.1016/j.agrformet.2020.108173
dc.identifier.urihttp://hdl.handle.net/20.500.12123/7989
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0168192320302756
dc.description.abstractKnowledge about heat acclimation in perennial plants is limited. Our hypotheses were (i) that high temperature during budswell before budbreak elicits acclimation in grapevines that is mediated by greater water transport capacity, and (ii) that water deficit modulates acclimation to high temperature. We compared field grown Malbec grapevines heated before budbreak during 3 or 15 days with untreated controls. We also combined these thermal regimes with two water regimes, well-watered and water deficit. The heat treatment was applied to vines enclosed in individual chambers. Under well-watered conditions, 3 days of heating during budswell were enough to increase number and diameter of primary xylem vessels in the emerging shoots, leaf stomatal density, transpiration, CO2 assimilation, shoot hydraulic conductance, specific shoot hydraulic conductivity, rates of shoot growth, leaf and lateral shoot appearance. Water deficit, while influencing xylem architecture, before budbreak did not alter the temperature effects on the water transport capacity. In vines with water deficit before budbreak, shoot hydraulic conductance was correlated with primary vessel number and total area of vessels, while in well-watered vines, with vessel size and total area of vessels. Irrigation practices need to manage this tradeoff between adaptation to elevated temperature and increased risk of hydraulic failure in plants with more and larger xylem vessels.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherElsevieres_AR
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_AR
dc.sourceAgricultural and Forest Meteorology 295 : 108173 (December 2020)es_AR
dc.subjectVides_AR
dc.subjectGrapevineseng
dc.subjectCambio Climáticoes_AR
dc.subjectClimate Changeeng
dc.subjectRelaciones Planta Aguaes_AR
dc.subjectPlant Water Relationseng
dc.subjectTemperaturaes_AR
dc.subjectTemperatureeng
dc.subjectBrotes
dc.subjectShootseng
dc.titleHigh temperature during the budswell phase of grapevines increases shoot water transport capacityes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Mendozaes_AR
dc.description.filFil: Galat Giorgi, Mirta Eugenia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentinaes_AR
dc.description.filFil: Keller, Markus. Washington State University. Department of Horticulture; Estados Unidoses_AR
dc.description.filFil: Sadras, Victor Oscar. South Australian Research & Development Institute; Australia. University of Adelaide. School of Agriculture, Food and Wine; Australiaes_AR
dc.description.filFil: Roig Junent, Fidel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Departamento de Dendrocronología e Historia Ambiental; Argentinaes_AR
dc.description.filFil: Perez Peña, Jorge Esteban. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentinaes_AR
dc.subtypecientifico


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