Thermal imaging to detect spatial and temporal variation in the water status of grapevine (Vitis Vinifera L.)

Thermal imaging can detect variation in stomatal conductance and therefore spatial variation in the water status of grapevine. Temporal variation can also be assessed, using indices that relate canopy temperature to reference temperatures, but, as yet, there is no standard approach to obtain these r...

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Detalles Bibliográficos
Autores: Grant, O.M., Ochagavía, H., Baluja, J., Diago, M.P. [0000-0003-4049-0879], Tardáguila, J. [0000-0002-6639-8723]
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Institución:Universidad de La Rioja (UR)
Repositorio:RIUR. Repositorio Institucional de la Universidad de La Rioja
OAI Identifier:oai:portal.dialnet.es:doc/5bbc6864b750603269e80802
Acceso en línea:https://investigacion.unirioja.es/documentos/5bbc6864b750603269e80802
Access Level:acceso abierto
Palabra clave:Grapevine
Thermal imaging
Vitis vinifera
Water potential
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spelling Thermal imaging to detect spatial and temporal variation in the water status of grapevine (Vitis Vinifera L.)Grant, O.M.Ochagavía, H.Baluja, J.Diago, M.P. [0000-0003-4049-0879]Tardáguila, J. [0000-0002-6639-8723]GrapevineThermal imagingVitis viniferaWater potentialThermal imaging can detect variation in stomatal conductance and therefore spatial variation in the water status of grapevine. Temporal variation can also be assessed, using indices that relate canopy temperature to reference temperatures, but, as yet, there is no standard approach to obtain these reference values. Also, the potential of above-canopy imaging is uncertain for vine rows with mainly vertically oriented leaves. Thermal images of the side (vertical leaves) and top (horizontal leaves) of ‘Tempranillo’ (Vitis vinifera L.) grapevine rows were captured on different dates and in different plots in a vineyard in the Rioja, Spain. Reference temperatures were determined separately (i) as the temperature of artificial leaves placed in the grapevine canopy, or (ii) by calculation from the leaf energy budget. With respect to imaging the side of grapevine rows, the two approaches exhibited similar potential to indicate variation in stomatal conductance or stem water potential within a single date and time of day. Over different dates (implying temporal as well as spatial variability) and both sides of the grapevines, the use of the artificial surfaces resulted in stronger correlations between thermal indices and physiological variables than the application of energy budget models. The use of such reference surfaces would allow a standardised approach to thermography. Imaging the top of rows produced some highly significant correlations between thermal indices and physiological variables. Modified artificial leaves could be developed to standardise the determination of reference temperatures, at the same spatial resolution as the leaves of interest. That imaging the top of grapevine canopies provides useful information on water status suggests that aerial imaging could be used to assess spatial variation in water status across entire vineyards. © 2015 Taylor & Francis.2016info:eu-repo/semantics/articleSubtype: Articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://investigacion.unirioja.es/documentos/5bbc6864b750603269e80802reponame:RIUR. Repositorio Institucional de la Universidad de La Riojainstname:Universidad de La Rioja (UR)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1080/14620316.2015.1110991info:eu-repo/semantics/altIdentifier/pissn/1462-0316Thermal imaging to detect spatial and temporal variation in the water status of grapevine (Vitis Vinifera L.), 2016, vol. 91, núm. 1, pág. 44-55info:eu-repo/semantics/openAccessoai:portal.dialnet.es:doc/5bbc6864b750603269e808022026-06-14T12:47:17Z
dc.title.none.fl_str_mv Thermal imaging to detect spatial and temporal variation in the water status of grapevine (Vitis Vinifera L.)
title Thermal imaging to detect spatial and temporal variation in the water status of grapevine (Vitis Vinifera L.)
spellingShingle Thermal imaging to detect spatial and temporal variation in the water status of grapevine (Vitis Vinifera L.)
Grant, O.M.
Grapevine
Thermal imaging
Vitis vinifera
Water potential
title_short Thermal imaging to detect spatial and temporal variation in the water status of grapevine (Vitis Vinifera L.)
title_full Thermal imaging to detect spatial and temporal variation in the water status of grapevine (Vitis Vinifera L.)
title_fullStr Thermal imaging to detect spatial and temporal variation in the water status of grapevine (Vitis Vinifera L.)
title_full_unstemmed Thermal imaging to detect spatial and temporal variation in the water status of grapevine (Vitis Vinifera L.)
title_sort Thermal imaging to detect spatial and temporal variation in the water status of grapevine (Vitis Vinifera L.)
dc.creator.none.fl_str_mv Grant, O.M.
Ochagavía, H.
Baluja, J.
Diago, M.P. [0000-0003-4049-0879]
Tardáguila, J. [0000-0002-6639-8723]
author Grant, O.M.
author_facet Grant, O.M.
Ochagavía, H.
Baluja, J.
Diago, M.P. [0000-0003-4049-0879]
Tardáguila, J. [0000-0002-6639-8723]
author_role author
author2 Ochagavía, H.
Baluja, J.
Diago, M.P. [0000-0003-4049-0879]
Tardáguila, J. [0000-0002-6639-8723]
author2_role author
author
author
author
dc.subject.none.fl_str_mv Grapevine
Thermal imaging
Vitis vinifera
Water potential
topic Grapevine
Thermal imaging
Vitis vinifera
Water potential
description Thermal imaging can detect variation in stomatal conductance and therefore spatial variation in the water status of grapevine. Temporal variation can also be assessed, using indices that relate canopy temperature to reference temperatures, but, as yet, there is no standard approach to obtain these reference values. Also, the potential of above-canopy imaging is uncertain for vine rows with mainly vertically oriented leaves. Thermal images of the side (vertical leaves) and top (horizontal leaves) of ‘Tempranillo’ (Vitis vinifera L.) grapevine rows were captured on different dates and in different plots in a vineyard in the Rioja, Spain. Reference temperatures were determined separately (i) as the temperature of artificial leaves placed in the grapevine canopy, or (ii) by calculation from the leaf energy budget. With respect to imaging the side of grapevine rows, the two approaches exhibited similar potential to indicate variation in stomatal conductance or stem water potential within a single date and time of day. Over different dates (implying temporal as well as spatial variability) and both sides of the grapevines, the use of the artificial surfaces resulted in stronger correlations between thermal indices and physiological variables than the application of energy budget models. The use of such reference surfaces would allow a standardised approach to thermography. Imaging the top of rows produced some highly significant correlations between thermal indices and physiological variables. Modified artificial leaves could be developed to standardise the determination of reference temperatures, at the same spatial resolution as the leaves of interest. That imaging the top of grapevine canopies provides useful information on water status suggests that aerial imaging could be used to assess spatial variation in water status across entire vineyards. © 2015 Taylor & Francis.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
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info:eu-repo/semantics/publishedVersion
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dc.identifier.none.fl_str_mv https://investigacion.unirioja.es/documentos/5bbc6864b750603269e80802
url https://investigacion.unirioja.es/documentos/5bbc6864b750603269e80802
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1080/14620316.2015.1110991
info:eu-repo/semantics/altIdentifier/pissn/1462-0316
Thermal imaging to detect spatial and temporal variation in the water status of grapevine (Vitis Vinifera L.), 2016, vol. 91, núm. 1, pág. 44-55
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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instname:Universidad de La Rioja (UR)
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collection RIUR. Repositorio Institucional de la Universidad de La Rioja
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