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Background and aims: Regulated deficit irrigation and crop load adjustment are viticultural practices used to improve grape and wine composition. Our objective was to evaluate the combined effect of irrigation and crop load levels on leaf photosynthesis, accumulation of non-structural carbohydrates and leaf carbon utilisation during the season. Methods and Results: The trial started in 2006 in a Vitis vinifera L. Malbec vineyard in Mendoza. Two irrigation [ver mas...]
dc.contributor.authorDayer, Silvina
dc.contributor.authorPrieto, Jorge Alejandro
dc.contributor.authorGalat Giorgi, Mirta Eugenia
dc.contributor.authorPerez Peña, Jorge Esteban
dc.date.accessioned2017-10-04T12:35:19Z
dc.date.available2017-10-04T12:35:19Z
dc.date.issued2016
dc.identifier.issn1322-7130 (Print)
dc.identifier.issn1755-0238 (Online)
dc.identifier.otherDOI: 10.1111/ajgw.12180
dc.identifier.urihttp://hdl.handle.net/20.500.12123/1398
dc.identifier.urihttp://onlinelibrary.wiley.com/doi/10.1111/ajgw.12180/abstract
dc.description.abstractBackground and aims: Regulated deficit irrigation and crop load adjustment are viticultural practices used to improve grape and wine composition. Our objective was to evaluate the combined effect of irrigation and crop load levels on leaf photosynthesis, accumulation of non-structural carbohydrates and leaf carbon utilisation during the season. Methods and Results: The trial started in 2006 in a Vitis vinifera L. Malbec vineyard in Mendoza. Two irrigation levels (100% and 25% of reference evapotranspiration) and two crop loads (20 and 10 bunches per vine, set at veraison) were studied. During the 2009/10 season, diurnal dynamics of leaf water potential, photosynthesis and carbohydrate concentration were determined at anthesis, veraison and harvest. Deficit irrigation reduced leaf starch concentration at veraison and increased soluble sugars. High-crop load reduced leaf starch concentration at veraison. Starch turnover was correlated with photosynthesis during the previous day. Conclusions: Deficit irrigation had a greater effect on carbon allocation between soluble sugars and starch than on total carbohydrate production. Effects of deficit irrigation and crop load operated independently. Significance of the Study: This experiment improved our knowledge of carbon assimilation and allocation during the season, which may assist the development of management practices to stabilise yield and fruit composition.eng
dc.formatapplication/pdf
dc.language.isoeng
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.sourceAustralian journal of grape and wine research 22 (1) : 115–123. (February 2016)
dc.subjectVid
dc.subjectGrapevineseng
dc.subjectAlmidón
dc.subjectStarcheng
dc.subjectCarbohidratos
dc.subjectCarbohydrateseng
dc.subjectRiego
dc.subjectIrrigationeng
dc.subject.otherMalbec
dc.subject.otherDéficit de Riego
dc.titleLeaf carbohydrate metabolism in Malbec grapevines : combined effects of regulated déficit irrigation and crop load
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/acceptedVersion
dc.description.origenEEA Mendoza
dc.gic151120
dc.description.filFil: Dayer, Silvina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina
dc.description.filFil: Prieto, Jorge Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina
dc.description.filFil: Galat Giorgi, Mirta Eugenia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina
dc.description.filFil: Perez Peña, Jorge Esteban. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Mendoza; Argentina
dc.subtypecientifico


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