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Gas exchange performance and oxidative stress indicators in olive tree under different deficit irrigation strategies

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dc.contributor.authorGonçalves, Alexandre
dc.contributor.authorSilva, Ermelinda
dc.contributor.authorMartins, Sandra
dc.contributor.authorBrito, Cátia
dc.contributor.authorPinto, Luís
dc.contributor.authorRocha, Luís
dc.contributor.authorPavia, Ivo
dc.contributor.authorLuzio, Ana
dc.contributor.authorDinis, Lia Tânia
dc.contributor.authorFernandes-Silva, Anabela
dc.contributor.authorRodrigues, M.A.
dc.contributor.authorMoutinho-Pereira, José
dc.contributor.authorCorreia, Carlos M.
dc.date.accessioned2018-02-05T16:17:36Z
dc.date.available2018-02-05T16:17:36Z
dc.date.issued2017
dc.description.abstractThe predicted scenario of global warming anticipates severe summer conditions in the Mediterranean basin, with low water availability and excessive heat load. hlence, in arder to overcome the constrains that will affect olive groves and its socioeconomic value, new cropping practices focusing on water use efficiency must be investigated. In this work we aimed to investigate water management practices that can ensure the adequate compromise between yield and the quality of olive products. The study was conducted in Quinta do Prado, Lodões, Vila Flor (41°20'13. 3"N, 7°05'54. 2"W) and different irrigation strategies where investigated: full irrigation (Fl), equivalent to 100% of crop evapotranspiration (ETc), as control treatment, sustained déficit irrigation (SDI; 30% of ETc) and regulated déficit irrigation (RDI; 80% of ETc in phases l and III offruit growth and 10% of ETc in pit hardening stage). The impact of the treatments on leaf gás exchange and oxidative stress indicators during the 2016 summer was evaluated. The results indicate that both déficit irrigation strategies (DIS) allowed to maintain similar values of photosynthetic and transpjration rate and stomatal conductance as in Fl treatment, even in the afternoon period, although occasionally lower values were recorded during summer, namely in RDI plants. Meanwhile, despite the great disparity in the amount of water used among treatments, there were no significant differences in the degree of oxidative stress, judging by the comparative values of photosynthetic pigments, soluble proteins, total thiols and electrolyte leakage. Thus, the DIS used in this study allow an adequate physiological activity of olive trees and give new insights about the effect of these strategies in olive orchards. Since the field trial is located in a commercial farm, production costs, returns, and also fruit quality parameters are being recorded, analysis of which might give an economic insight regarding the sustainability of the implemented techniques.pt_PT
dc.description.sponsorshipThis work was funded by the INTERACT project - "Integrative Research in Environment, Agro-Chains and Technology", no. NORTE-01-0145-FEDER-000017, in its lines of research entitled ISAC and VitalityWINE, co-financed by the European Regional Development Fund (ERDF) through NORTE 2020 (North Regional Operational Program 2014/2020). EM (PD/BD/128274/2017), CB (PD/BD/52543/2014), LR (PD/BD/113612/2015) and IP (PD/BD/113611/2015) acknowledge the financiai support provided by the FCTPortuguese Foundation for Science and Technology, under the Doctoral Programme "Agricultural Production Chains from fork to farm" (PD/00122/2012).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGonçalves, Alexandre; Silva, Ermelinda; Martins, S.; Brito, Cátia; Pinto, Luís; Rocha, Luís; Pavia, I.; Luzia, A.; Dinis, L.; Fernandes-Silva, Anabela; Rodrigues, M.A.; Moutinho-Pereira, José; Correia, Carlos (2017). Gas exchange performance and oxidative stress indicators in olive tree under different deficit irrigation strategies. In VIII Congresso Ibérico de Ciências Hortícolas. Coimbra. ISBN 978-972-8936-27-3pt_PT
dc.identifier.isbn978-972-8936-27-3
dc.identifier.urihttp://hdl.handle.net/10198/15548
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationPD/00122/2012pt_PT
dc.relationMitigation measures to improve physiology and productivity of olive trees under abiotic stresses
dc.relationEFEITO DA APLICAÇÃO DE CAULINO E ACIDO SALICILICO NA MITIGAÇÃO DO STRESS ESTIUAL EM OLIVEIRA
dc.relationSELENIUM BIOFORTIFICATION, EFFECTS IN REGULATION, PHYSIOLOGICAL AND MOLECULAR FUNCTIONS IN PORTUGUESE TRITICUM AESTIVUM CULTIVARS GROWN ON ACID SOILS UNDER WATER-STRESS CONDITIONS
dc.relationAGRONOMIC BIOFORTIFICATION OF WHEAT WITH MICRONUTRIENTS FOR HIGHER YEILD, NUTRITIONAL VALUE AND PLANT STRESS RESISTANCE
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectClimate changept_PT
dc.subjectCropping practicespt_PT
dc.subjectOlea europaeapt_PT
dc.subjectPhotosynthesispt_PT
dc.subjectWater managementpt_PT
dc.titleGas exchange performance and oxidative stress indicators in olive tree under different deficit irrigation strategiespt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleMitigation measures to improve physiology and productivity of olive trees under abiotic stresses
oaire.awardTitleEFEITO DA APLICAÇÃO DE CAULINO E ACIDO SALICILICO NA MITIGAÇÃO DO STRESS ESTIUAL EM OLIVEIRA
oaire.awardTitleSELENIUM BIOFORTIFICATION, EFFECTS IN REGULATION, PHYSIOLOGICAL AND MOLECULAR FUNCTIONS IN PORTUGUESE TRITICUM AESTIVUM CULTIVARS GROWN ON ACID SOILS UNDER WATER-STRESS CONDITIONS
oaire.awardTitleAGRONOMIC BIOFORTIFICATION OF WHEAT WITH MICRONUTRIENTS FOR HIGHER YEILD, NUTRITIONAL VALUE AND PLANT STRESS RESISTANCE
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//PD%2FBD%2F128274%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//PD%2FBD%2F52543%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//PD%2FBD%2F113612%2F2015/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/FARH/PD%2FBD%2F113611%2F2015/PT
oaire.citation.conferencePlaceCoimbrapt_PT
oaire.citation.endPage177pt_PT
oaire.citation.startPage177pt_PT
oaire.citation.titleVIII Congresso Ibérico de Ciências Hortícolaspt_PT
oaire.fundingStreamFARH
person.familyNameRodrigues
person.givenNameManuel
person.identifier.ciencia-id371D-DF0D-8D68
person.identifier.orcid0000-0002-5367-1129
person.identifier.ridO-1721-2016
person.identifier.scopus-author-id35270106800
project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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