Linking sap flow and trunk diameter measurements to assess water dynamics of Touriga-Nacional grapevines trained in cordon and Guyot systems
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/21628 |
Resumo: | The present research aimed to evaluate the water dynamics of grapevines trained in Cordon and Guyot systems by coupling sap flow and trunk diameter measurements under Mediterranean climate conditions. The study was conducted in a vineyard with Touriga-Nacional located at the Douro Valley, Portugal, during 2017. The results showed daily trunk diameter fluctuations (TDFs), with the contraction, recovery and increment phases and higher sap flow (SF) rates at earlier stages. Under harsh pedoclimatic conditions, SF was reduced and TDF flattened. Rehydration and stomatal mechanisms were mostly associated with these responses. Guyot vines showed higher changes in TDF for the same SF values, whereas the TDFs of Cordon vines remained practically unchanged over maturation. Guyot vines generally showed increased values of cumulative increment and maximum daily trunk shrinkage. Although Guyot vines had a similar leaf area index (LAI), they showed higher SF/LAI ratios than Cordon vines. These results highlight the e ect of the shorter length of the hydraulic pathways of the Guyot training system, in contrast to the higher trunk and the permanent horizontal branch (cordon) of the Cordon training system, indicating good adaptation to local pedoclimatic conditions. The study pointed to the complementary use of both techniques in the evaluation of grapevine water dynamics |
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Linking sap flow and trunk diameter measurements to assess water dynamics of Touriga-Nacional grapevines trained in cordon and Guyot systemsDouro Demarcated Regionplant-based sensorstraining systemVitis viniferaThe present research aimed to evaluate the water dynamics of grapevines trained in Cordon and Guyot systems by coupling sap flow and trunk diameter measurements under Mediterranean climate conditions. The study was conducted in a vineyard with Touriga-Nacional located at the Douro Valley, Portugal, during 2017. The results showed daily trunk diameter fluctuations (TDFs), with the contraction, recovery and increment phases and higher sap flow (SF) rates at earlier stages. Under harsh pedoclimatic conditions, SF was reduced and TDF flattened. Rehydration and stomatal mechanisms were mostly associated with these responses. Guyot vines showed higher changes in TDF for the same SF values, whereas the TDFs of Cordon vines remained practically unchanged over maturation. Guyot vines generally showed increased values of cumulative increment and maximum daily trunk shrinkage. Although Guyot vines had a similar leaf area index (LAI), they showed higher SF/LAI ratios than Cordon vines. These results highlight the e ect of the shorter length of the hydraulic pathways of the Guyot training system, in contrast to the higher trunk and the permanent horizontal branch (cordon) of the Cordon training system, indicating good adaptation to local pedoclimatic conditions. The study pointed to the complementary use of both techniques in the evaluation of grapevine water dynamicsMDPIRepositório da Universidade de LisboaMalheiro, Aureliano C.Pires, MafaldaConceição, NunoClaro, Ana M.Dinis, Lia-TâniaMoutinho-Pereira, José2021-07-16T10:45:32Z20202020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/21628engAgriculture 2020, 10, 31510.3390/agriculture10080315info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:51:06Zoai:www.repository.utl.pt:10400.5/21628Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:06:10.908304Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Linking sap flow and trunk diameter measurements to assess water dynamics of Touriga-Nacional grapevines trained in cordon and Guyot systems |
title |
Linking sap flow and trunk diameter measurements to assess water dynamics of Touriga-Nacional grapevines trained in cordon and Guyot systems |
spellingShingle |
Linking sap flow and trunk diameter measurements to assess water dynamics of Touriga-Nacional grapevines trained in cordon and Guyot systems Malheiro, Aureliano C. Douro Demarcated Region plant-based sensors training system Vitis vinifera |
title_short |
Linking sap flow and trunk diameter measurements to assess water dynamics of Touriga-Nacional grapevines trained in cordon and Guyot systems |
title_full |
Linking sap flow and trunk diameter measurements to assess water dynamics of Touriga-Nacional grapevines trained in cordon and Guyot systems |
title_fullStr |
Linking sap flow and trunk diameter measurements to assess water dynamics of Touriga-Nacional grapevines trained in cordon and Guyot systems |
title_full_unstemmed |
Linking sap flow and trunk diameter measurements to assess water dynamics of Touriga-Nacional grapevines trained in cordon and Guyot systems |
title_sort |
Linking sap flow and trunk diameter measurements to assess water dynamics of Touriga-Nacional grapevines trained in cordon and Guyot systems |
author |
Malheiro, Aureliano C. |
author_facet |
Malheiro, Aureliano C. Pires, Mafalda Conceição, Nuno Claro, Ana M. Dinis, Lia-Tânia Moutinho-Pereira, José |
author_role |
author |
author2 |
Pires, Mafalda Conceição, Nuno Claro, Ana M. Dinis, Lia-Tânia Moutinho-Pereira, José |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Malheiro, Aureliano C. Pires, Mafalda Conceição, Nuno Claro, Ana M. Dinis, Lia-Tânia Moutinho-Pereira, José |
dc.subject.por.fl_str_mv |
Douro Demarcated Region plant-based sensors training system Vitis vinifera |
topic |
Douro Demarcated Region plant-based sensors training system Vitis vinifera |
description |
The present research aimed to evaluate the water dynamics of grapevines trained in Cordon and Guyot systems by coupling sap flow and trunk diameter measurements under Mediterranean climate conditions. The study was conducted in a vineyard with Touriga-Nacional located at the Douro Valley, Portugal, during 2017. The results showed daily trunk diameter fluctuations (TDFs), with the contraction, recovery and increment phases and higher sap flow (SF) rates at earlier stages. Under harsh pedoclimatic conditions, SF was reduced and TDF flattened. Rehydration and stomatal mechanisms were mostly associated with these responses. Guyot vines showed higher changes in TDF for the same SF values, whereas the TDFs of Cordon vines remained practically unchanged over maturation. Guyot vines generally showed increased values of cumulative increment and maximum daily trunk shrinkage. Although Guyot vines had a similar leaf area index (LAI), they showed higher SF/LAI ratios than Cordon vines. These results highlight the e ect of the shorter length of the hydraulic pathways of the Guyot training system, in contrast to the higher trunk and the permanent horizontal branch (cordon) of the Cordon training system, indicating good adaptation to local pedoclimatic conditions. The study pointed to the complementary use of both techniques in the evaluation of grapevine water dynamics |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020 2020-01-01T00:00:00Z 2021-07-16T10:45:32Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.5/21628 |
url |
http://hdl.handle.net/10400.5/21628 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Agriculture 2020, 10, 315 10.3390/agriculture10080315 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799131154970836992 |