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    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/37065

    Título
    Combined effects of water status and iron deficiency chlorosis on grape composition in non-irrigated vineyards
    Autor
    González García, María RosaAutoridad UVA Orcid
    Hailemichael, Girma
    Martín Peña, PedroAutoridad UVA Orcid
    Catalina Tomás, Álvaro
    Año del Documento
    2019
    Editorial
    Universidade de São Paulo
    Descripción
    Producción Científica
    Documento Fuente
    Scientia Agricola, 2019, vol.76 no.6
    Résumé
    Although 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.
    Palabras Clave
    Clorofila
    Sequía
    Chlorophyll
    Drought
    ISSN
    1678-992X
    Revisión por pares
    SI
    DOI
    10.1590/1678-992x-2018-0084
    Patrocinador
    Ministerio de Economía, Industria y Competitividad (Project RTA2014- 00077-C02-02)
    Junta de Castilla y León (programa de apoyo a proyectos de investigación - Ref. Project VA013P17)
    Version del Editor
    http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001600473&tlng=en
    Idioma
    eng
    URI
    http://uvadoc.uva.es/handle/10324/37065
    Tipo de versión
    info:eu-repo/semantics/draft
    Derechos
    openAccess
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    • DEP57 - Artículos de revista [102]
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    v76n6a04-SA-2018-0084-1.pdf
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    Attribution-NonCommercial-NoDerivatives 4.0 InternacionalExcepté là où spécifié autrement, la license de ce document est décrite en tant que Attribution-NonCommercial-NoDerivatives 4.0 Internacional

    Universidad de Valladolid

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