Gas exchanges in grapevines under water stress regime. II. Photorespiration and varietal behavior
Autor(a) principal: | |
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Data de Publicação: | 1999 |
Outros Autores: | |
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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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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1793416666464387072 |