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Physiological response of the grapevine cultivars Touriga Nacional and Touriga Franca to increasing summer stress conditions in the Douro Region

2018Conference paper Open access
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dc.contributor.authorRibeiro, A.C.
dc.contributor.authorBarreales, David
dc.contributor.authorAndrade, João Verdial
dc.contributor.authorRodrigues, M.A.
dc.contributor.authorBlanco-Ward, Daniel
dc.contributor.authorMonteiro, Alexandra
dc.contributor.authorLopes, Myriam
dc.contributor.authorBorrego, Carlos S.
dc.contributor.authorSilveira, Carlos
dc.contributor.authorViceto, Carolina
dc.contributor.authorRocha, Alfredo
dc.contributor.authorFeliciano, Manuel
dc.contributor.authorCastro, João Paulo
dc.contributor.authorMiranda, Ana Isabel
dc.date.accessioned2019-03-06T10:40:58Z
dc.date.available2019-03-06T10:40:58Z
dc.date.issued2018
dc.description.abstractThe behaviour of the cultivars Touriga Nacional and Touriga Franca (Vitis vinifera L.), was studied under increasing summer stress conditions across Douro valley in the Demarcated Region of Douro - Portugal. The Douro region is divided into three climatic subregions: Baixo Corgo (BC), Cima Corgo (CC), and Douro Superior (DS) whose weather characteristics are presented and discussed in this study. In the Douro valley temperature increases and precipitation decreases from West (Baixo Corgo) to East (Douro Superior). Growing season precipitation has a mean value of 193 mm, representing 30% of the annual total (624 mm). Low precipitation values along with high temperatures and high radiation exposure give rise to situations of intense summer water and thermic stress, particularly in the Cima Corgo and Douro Superior subregions. The main objective of this study was to characterize the physiological response of non-irrigated grapevine cultivars Touriga Nacional and Touriga Franca growing under different summer stress conditions in the Douro region, during 2017 growing season. At veraison and ripeness stages, predawn and stem water potential showed a significant trend decrease from BC vines located in Régua to DS vines located in Almendra. Stomatal conductance, net CO2 assimilation rate, transpiration rate followed seasonal patterns similar to water potential. There was a marked reduction in these parameters from the lower to the higher dry site.pt_PT
dc.description.sponsorshipThe authors wish to thank the financial support of the DOUROZONE project (PTDC/AAG-MAA/3335/2014; POCI-01-0145-FEDER-016778) through the Project 3599 – Promoting the scientific production and the technological development, and thematic networks (3599-PPCDT) and through FEDER. Projeto realizado com o apoio da Sogrape Vinhos S.A.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRibeiro, A.C.; Barreales, David; Andrade, João Verdial; Rodrigues, M.A.; Blanco-Ward, Daniel; Monteiro, Alexandra; Lopes, Myriam; Borrrego, Carlos; Silveira, Carlos; Viceto, Carolina; Rocha, Alfredo; Feliciano, Manuel; Castro, João Paulo; Miranda, Ana Isabel (2018). Physiological response of the grapevine cultivars Touriga Nacional and Touriga Franca to increasing summer stress conditions in the Douro Region. In XII Congreso Internacional Terroir. Zaragoza. p. 440-447. ISBN 978-84-09-03040-8pt_PT
dc.identifier.isbn978-84-09-03040-8
dc.identifier.urihttp://hdl.handle.net/10198/19094
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectTouriga Nacionalpt_PT
dc.subjectTouriga Francapt_PT
dc.subjectDouro regionpt_PT
dc.titlePhysiological response of the grapevine cultivars Touriga Nacional and Touriga Franca to increasing summer stress conditions in the Douro Regionpt_PT
dc.typeconference paper
dspace.entity.typePublication
oaire.citation.conferencePlaceZagarozapt_PT
person.familyNameRibeiro
person.familyNameBarreales
person.familyNameAndrade
person.familyNameRodrigues
person.familyNameSilveira
person.familyNameFeliciano
person.familyNameCastro
person.givenNameAntónio C.
person.givenNameDavid
person.givenNameJoão Verdial
person.givenNameManuel Ângelo
person.givenNameCarlos
person.givenNameManuel
person.givenNameJoão Paulo
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person.identifier.orcid0000-0002-5809-413X
person.identifier.orcid0000-0002-5367-1129
person.identifier.orcid0000-0002-9424-174X
person.identifier.orcid0000-0002-3147-4511
person.identifier.orcid0000-0003-0647-8892
person.identifier.ridO-1721-2016
person.identifier.ridX-1640-2018
person.identifier.ridA-8581-2014
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person.identifier.scopus-author-id21233448700
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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