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dc.contributor.authorGonzález García, María Rosa 
dc.contributor.authorHailemichael, Girma
dc.contributor.authorMartín Peña, Pedro 
dc.contributor.authorCatalina Tomás, Álvaro
dc.date.accessioned2019-07-16T11:46:45Z
dc.date.available2019-07-16T11:46:45Z
dc.date.issued2019
dc.identifier.citationScientia Agricola, 2019, vol.76 no.6es
dc.identifier.issn1678-992Xes
dc.identifier.urihttp://uvadoc.uva.es/handle/10324/37065
dc.descriptionProducción Científicaes
dc.description.abstractAlthough water deficit and iron deficiency chlorosis are common environmental stresses in the Mediterranean area, few data are reported in the literature on their effects on vineyards, when acting simultaneously. The main objective of this research was to study the combined effects of iron deficiency and water status on vigor, yield and fruit composition in rainfed vineyards. Moreover, the investigation aimed to evaluate the feasibility of using foliar chlorophyll content (Chl) and predawn leaf water potential (LWP), measured at veraison, to assess potential quality of grapes in the framework of precision viticulture. For this, 24 non-irrigated ‘Tempranillo’ vineyard subzones were monitored in Ribera del Duero (North-Central Spain) during three consecutive seasons (2011-2013). The analysis of variance and principal component analysis showed that malic acid concentrations of the must were impacted only by Chl, whereas total soluble solids and total acidity were mainly modified by LWP. Both water and iron status reduced yield and berry weight and had additive effects on extractable anthocyanin content in grapes, total polyphenol index and color density of the must. In all seasons, the ratio Chl/LWP had a better predicting value for quality parameters of these grapes than leaf area index, Chl or LWP individually. The present work demonstrates the potential interest of physiological indexes combining water status and foliar chlorosis as indicators of grape phenolic potential in rainfed vineyards affected by iron deficiency.es
dc.format.mimetypeapplication/pdfes
dc.language.isoenges
dc.publisherUniversidade de São Pauloes
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subject.classificationClorofilaes
dc.subject.classificationSequíaes
dc.subject.classificationChlorophylles
dc.subject.classificationDroughtes
dc.titleCombined effects of water status and iron deficiency chlorosis on grape composition in non-irrigated vineyardses
dc.typeinfo:eu-repo/semantics/articlees
dc.identifier.doi10.1590/1678-992x-2018-0084es
dc.relation.publisherversionhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001600473&tlng=enes
dc.identifier.publicationfirstpage473es
dc.identifier.publicationissue6es
dc.identifier.publicationlastpage480es
dc.identifier.publicationtitleScientia Agricolaes
dc.identifier.publicationvolume76es
dc.peerreviewedSIes
dc.description.projectMinisterio de Economía, Industria y Competitividad (Project RTA2014- 00077-C02-02)es
dc.description.projectJunta de Castilla y León (programa de apoyo a proyectos de investigación - Ref. Project VA013P17)es
dc.identifier.essn1678-992Xes
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.type.hasVersioninfo:eu-repo/semantics/draftes


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