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An attempt to quantify grapevine water stress in a mediterranean environment

2001Conference object Open access
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dc.contributor.authorLopes, C.M.
dc.contributor.authorVicente-Paulo, J.
dc.contributor.authorSantos, T.
dc.contributor.authorRodrigues, M.L.
dc.contributor.authorBarroso, J.
dc.contributor.authorChaves, M.M.
dc.date.accessioned2022-01-12T11:28:32Z
dc.date.available2022-01-12T11:28:32Z
dc.date.issued2001
dc.description.abstractAiming to quantify the effects of the intensity and duration of grapevine water stress, physiological and agronomical data from an irrigation experiment conducted during 1999 at Alentejo, south of Portugal, with the red variety Aragonez (syn. Tempranillo) were correlated with an water stress index (Sψ). This index was calculated by the integral of predawn leaf water potential below –0.2 MPa between bloom and harvest. Significant relationships were found between the Sψ, yield components and berry composition. The multiple regression analysis shows that the Sψ in the period bloom-veraison has a higher contribution to explain the variation in berry weight, anthocyanins and phenolics concentration than the Sψ in the period veraison-harvest. The knowledge of those relationships, together with the relationship between available soil water content and predawn leaf water potential, may allow the adequate management of soil water availability to optimise the yield/quality ratio for each ecological situationpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLopes, C.M., Vicente-Paulo, J., Santos, T., Rodrigues, M.L., Barroso, J. e Chaves, M. M., 2001. An attempt to quantify grapevine water stress in a mediterranean environment. Compte Rendu XII émes Journées GESCO, Agro Montpellier/ENSAM, Montpellier, França, 3-7 Julho, Vol. 1: 43-48pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.5/23011
dc.language.isoengpt_PT
dc.publisherGESCOpt_PT
dc.subjectpredawn leaf water potentialpt_PT
dc.subjectwater stress indexpt_PT
dc.subjectTempranillopt_PT
dc.titleAn attempt to quantify grapevine water stress in a mediterranean environmentpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceMontpellier, Françapt_PT
oaire.citation.titleCompte Rendu XII émes Journées GESCO, Agro Montpellier/ENSAMpt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT

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