Gas exchanges in grapevines under water stress regime. II. Photorespiration and varietal behavior

Detalhes bibliográficos
Autor(a) principal: Regina, Murillo de Albuquerque
Data de Publicação: 1999
Outros Autores: Carbonneau, Alain
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/5137
Resumo: The photorespiration in grapevines (Vitis vinifera L.) leaves subjected to a water stress regime was analysed with the purpose of characterizing the behavior of different cultivars. Two-year old plants were used, grafted on Fercal, planted in plastic pots and cultivated in controlled environment. The photorespiration was calculated from leaf gas exchange measurements taken by means of a portable infrared CO2 analyser (LCA3-ADC), working in an open circuit. The absolute photorespiration values varied little among cultivars and level of irrigation, whereas the carboxylation efficiency and the CO2 compensation point were highly affected by the water stress, thereby evidencing different varietal sensitivity levels. The occurrence of a nonstomatal inhibition of the photosynthesis was verified affecting in a specific way the cultivars analysed. The Chardonnay adapted itself better to the water stress conditions as opposed to the high sensitivity on the part of Sémillon and Ugni blanc.
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spelling Gas exchanges in grapevines under water stress regime. II. Photorespiration and varietal behaviorTrocas gasosas em videira sob regime de estresse hídrico. II. Fotorrespiração e comportamento varietalcarboxylation efficiency; photosynthesis; selection of cultivars; Vitis viniferaeficiência da carboxilação; fotossíntese; seleção de cultivares; Vitis viniferaThe photorespiration in grapevines (Vitis vinifera L.) leaves subjected to a water stress regime was analysed with the purpose of characterizing the behavior of different cultivars. Two-year old plants were used, grafted on Fercal, planted in plastic pots and cultivated in controlled environment. The photorespiration was calculated from leaf gas exchange measurements taken by means of a portable infrared CO2 analyser (LCA3-ADC), working in an open circuit. The absolute photorespiration values varied little among cultivars and level of irrigation, whereas the carboxylation efficiency and the CO2 compensation point were highly affected by the water stress, thereby evidencing different varietal sensitivity levels. The occurrence of a nonstomatal inhibition of the photosynthesis was verified affecting in a specific way the cultivars analysed. The Chardonnay adapted itself better to the water stress conditions as opposed to the high sensitivity on the part of Sémillon and Ugni blanc.Analisou-se a fotorrespiração em folhas de videira (Vitis vinifera L.) submetidas a um regime de estresse hídrico, com o objetivo de caracterizar o comportamento de diferentes cultivares. Foram utilizadas plantas de dois anos, enxertadas sobre o porta-enxerto Fercal, plantadas em vasos plásticos e cultivadas em ambiente controlado. A fotorrespiração foi calculada a partir de medidas das trocas gasosas foliares. Os valores absolutos da fotorrespiração variaram pouco entre cultivares e nível de irrigação; já a eficiência da carboxilação e o ponto de compensação ao CO2 foram bastante afetados pelo estresse hídrico, o que revela diferentes níveis de sensibilidade varietal. Foi verificada a ocorrência de inibição não-estomática da fotossíntese, afetando diferencialmente as cultivares analisadas. Destacou-se, ainda, a maior adaptação da Chardonnay às condições de estresse hídrico, em oposição à grande sensibilidade da Sémillon e da Ugni blanc. Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraRegina, Murillo de AlbuquerqueCarbonneau, Alain1999-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5137Pesquisa Agropecuaria Brasileira; v.34, n.1, jan. 1999; 37-41Pesquisa Agropecuária Brasileira; v.34, n.1, jan. 1999; 37-411678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5137/2329info:eu-repo/semantics/openAccess2010-07-15T13:45:12Zoai:ojs.seer.sct.embrapa.br:article/5137Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-07-15T13:45:12Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Gas exchanges in grapevines under water stress regime. II. Photorespiration and varietal behavior
Trocas gasosas em videira sob regime de estresse hídrico. II. Fotorrespiração e comportamento varietal
title Gas exchanges in grapevines under water stress regime. II. Photorespiration and varietal behavior
spellingShingle Gas exchanges in grapevines under water stress regime. II. Photorespiration and varietal behavior
Regina, Murillo de Albuquerque
carboxylation efficiency; photosynthesis; selection of cultivars; Vitis vinifera
eficiência da carboxilação; fotossíntese; seleção de cultivares; Vitis vinifera
title_short Gas exchanges in grapevines under water stress regime. II. Photorespiration and varietal behavior
title_full Gas exchanges in grapevines under water stress regime. II. Photorespiration and varietal behavior
title_fullStr Gas exchanges in grapevines under water stress regime. II. Photorespiration and varietal behavior
title_full_unstemmed Gas exchanges in grapevines under water stress regime. II. Photorespiration and varietal behavior
title_sort Gas exchanges in grapevines under water stress regime. II. Photorespiration and varietal behavior
author Regina, Murillo de Albuquerque
author_facet Regina, Murillo de Albuquerque
Carbonneau, Alain
author_role author
author2 Carbonneau, Alain
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Regina, Murillo de Albuquerque
Carbonneau, Alain
dc.subject.por.fl_str_mv carboxylation efficiency; photosynthesis; selection of cultivars; Vitis vinifera
eficiência da carboxilação; fotossíntese; seleção de cultivares; Vitis vinifera
topic carboxylation efficiency; photosynthesis; selection of cultivars; Vitis vinifera
eficiência da carboxilação; fotossíntese; seleção de cultivares; Vitis vinifera
description The photorespiration in grapevines (Vitis vinifera L.) leaves subjected to a water stress regime was analysed with the purpose of characterizing the behavior of different cultivars. Two-year old plants were used, grafted on Fercal, planted in plastic pots and cultivated in controlled environment. The photorespiration was calculated from leaf gas exchange measurements taken by means of a portable infrared CO2 analyser (LCA3-ADC), working in an open circuit. The absolute photorespiration values varied little among cultivars and level of irrigation, whereas the carboxylation efficiency and the CO2 compensation point were highly affected by the water stress, thereby evidencing different varietal sensitivity levels. The occurrence of a nonstomatal inhibition of the photosynthesis was verified affecting in a specific way the cultivars analysed. The Chardonnay adapted itself better to the water stress conditions as opposed to the high sensitivity on the part of Sémillon and Ugni blanc.
publishDate 1999
dc.date.none.fl_str_mv 1999-01-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/5137
url https://seer.sct.embrapa.br/index.php/pab/article/view/5137
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/5137/2329
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 Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.34, n.1, jan. 1999; 37-41
Pesquisa Agropecuária Brasileira; v.34, n.1, jan. 1999; 37-41
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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