Leaf morphophysiology of coffee plants under different levels of light restriction
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Coffee Science (Online) |
Texto Completo: | https://coffeescience.ufla.br/index.php/Coffeescience/article/view/132 |
Resumo: | The aim of this study was to evaluate the morphophysiological behavior of coffee leaves (Coffea arabica L.) maintained under different levels of artificial shading in initial vegetative phase. The experiment was carried out from January to June/2007, in agricultural field of Universidade Estadual do Sudoeste da Bahia – UESB, Vitória da Conquista, Bahia, Brazil. Four trials were carried out maintaining shading conditions (30, 50 and 70% of sun light radiance) and at a full sunlight, during 90 days after plantlet emergence. For each assay, Catuaí (IAC144), Catucaí 2SL and Acauã varieties were evaluated, following a randomized block design, considering number of leaves, leaf area, leaf relative water content, leaf water potential, number of ordinary epidermis and stomata cell and stomata index. Shading levels affect the water status of coffee plants, resulting in alterations of morphophysiology of leaves. Increase of leaf water content occurs simultaneously with decrease of modulus of water potential and proline content, denoting an interaction between shading and water content to coffee plants. Higher proline content was verified in Catuaí leaves in comparison to Catucaí variety. With light restriction there was a reduction of ordinary epidermis cell and stomata density. Upward of leaf area and leaf number was observed when the light restriction was similar or lower to 42,86 and 25,0 %, respectively. |
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Leaf morphophysiology of coffee plants under different levels of light restrictionMorfofisiologia foliar de cafeeiro sob diferentes níveis de restrição luminosaShadingstomatalight radianceSombreamentoestômatosluminosidadeThe aim of this study was to evaluate the morphophysiological behavior of coffee leaves (Coffea arabica L.) maintained under different levels of artificial shading in initial vegetative phase. The experiment was carried out from January to June/2007, in agricultural field of Universidade Estadual do Sudoeste da Bahia – UESB, Vitória da Conquista, Bahia, Brazil. Four trials were carried out maintaining shading conditions (30, 50 and 70% of sun light radiance) and at a full sunlight, during 90 days after plantlet emergence. For each assay, Catuaí (IAC144), Catucaí 2SL and Acauã varieties were evaluated, following a randomized block design, considering number of leaves, leaf area, leaf relative water content, leaf water potential, number of ordinary epidermis and stomata cell and stomata index. Shading levels affect the water status of coffee plants, resulting in alterations of morphophysiology of leaves. Increase of leaf water content occurs simultaneously with decrease of modulus of water potential and proline content, denoting an interaction between shading and water content to coffee plants. Higher proline content was verified in Catuaí leaves in comparison to Catucaí variety. With light restriction there was a reduction of ordinary epidermis cell and stomata density. Upward of leaf area and leaf number was observed when the light restriction was similar or lower to 42,86 and 25,0 %, respectively.Objetivou-se, neste estudo, avaliar o comportamento morfofisiológico de variedades de cafeeiros arábica (Coffea arabica L.), em fase vegetativa inicial, cultivadas sob diferentes níveis de restrição luminosa artificial. O experimento foi conduzido no período de janeiro a junho do ano de 2007, no campo agropecuário da Universidade Estadual do Sudoeste da Bahia – UESB, em Vitória da Conquista, BA. Quatro ensaios foram definidos por níveis de 30, 50 e 70 % de restrição luminosa e a pleno sol, mantidas durante os primeiros 90 dias após emergência das plântulas. Para cada ensaio, o comportamento das variedades Catuaí (IAC 144), Catucaí 2SL, e Acauã foi avaliado, seguindo-se o delineamento de blocos casualizados, sendo avaliado o número de folhas, área foliar, teor relativo de água na folha, potencial hídrico foliar, teor foliar de prolina, número de células epidérmicas, número de estômatos e índice estomático. Os níveis de restrição luminosa afetaram o status hídrico dos cafeeiros, alterando a morfofisiologia dos mesmos. Para a variedade Catuaí, o maior teor de prolina foliar foi determinado em relação à variedade Catucaí. Com a elevação da restrição de luz ocorreu redução da densidade estomática, do número de células epidérmicas ordinárias e do índice estomático. Níveis de restrição de luz até 42,86 e 25,0 % favoreceram a elevação da área foliar e do número de folhas, respectivamente.Editora UFLA2011-03-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://coffeescience.ufla.br/index.php/Coffeescience/article/view/132Coffee Science - ISSN 1984-3909; Vol. 5 No. 3 (2010); 262-271Coffee Science; Vol. 5 Núm. 3 (2010); 262-271Coffee Science; v. 5 n. 3 (2010); 262-2711984-3909reponame:Coffee Science (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLAporhttps://coffeescience.ufla.br/index.php/Coffeescience/article/view/132/pdfCopyright (c) 2011 Coffee Science - ISSN 1984-3909https://creativecommons.org/info:eu-repo/semantics/openAccessCésar, Fábio Ricardo Coutinho FontesMatsumoto, Sylvana NaomiViana, Anselmo Eloy SilveiraSantos, Marcos Antônio FerreiraBonfim, Joice Andrade2013-02-24T12:37:15Zoai:coffeescience.ufla.br:article/132Revistahttps://coffeescience.ufla.br/index.php/CoffeesciencePUBhttps://coffeescience.ufla.br/index.php/Coffeescience/oaicoffeescience@dag.ufla.br||coffeescience@dag.ufla.br|| alvaro-cozadi@hotmail.com1984-39091809-6875opendoar:2024-05-21T19:53:31.775888Coffee Science (Online) - Universidade Federal de Lavras (UFLA)true |
dc.title.none.fl_str_mv |
Leaf morphophysiology of coffee plants under different levels of light restriction Morfofisiologia foliar de cafeeiro sob diferentes níveis de restrição luminosa |
title |
Leaf morphophysiology of coffee plants under different levels of light restriction |
spellingShingle |
Leaf morphophysiology of coffee plants under different levels of light restriction César, Fábio Ricardo Coutinho Fontes Shading stomata light radiance Sombreamento estômatos luminosidade |
title_short |
Leaf morphophysiology of coffee plants under different levels of light restriction |
title_full |
Leaf morphophysiology of coffee plants under different levels of light restriction |
title_fullStr |
Leaf morphophysiology of coffee plants under different levels of light restriction |
title_full_unstemmed |
Leaf morphophysiology of coffee plants under different levels of light restriction |
title_sort |
Leaf morphophysiology of coffee plants under different levels of light restriction |
author |
César, Fábio Ricardo Coutinho Fontes |
author_facet |
César, Fábio Ricardo Coutinho Fontes Matsumoto, Sylvana Naomi Viana, Anselmo Eloy Silveira Santos, Marcos Antônio Ferreira Bonfim, Joice Andrade |
author_role |
author |
author2 |
Matsumoto, Sylvana Naomi Viana, Anselmo Eloy Silveira Santos, Marcos Antônio Ferreira Bonfim, Joice Andrade |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
César, Fábio Ricardo Coutinho Fontes Matsumoto, Sylvana Naomi Viana, Anselmo Eloy Silveira Santos, Marcos Antônio Ferreira Bonfim, Joice Andrade |
dc.subject.por.fl_str_mv |
Shading stomata light radiance Sombreamento estômatos luminosidade |
topic |
Shading stomata light radiance Sombreamento estômatos luminosidade |
description |
The aim of this study was to evaluate the morphophysiological behavior of coffee leaves (Coffea arabica L.) maintained under different levels of artificial shading in initial vegetative phase. The experiment was carried out from January to June/2007, in agricultural field of Universidade Estadual do Sudoeste da Bahia – UESB, Vitória da Conquista, Bahia, Brazil. Four trials were carried out maintaining shading conditions (30, 50 and 70% of sun light radiance) and at a full sunlight, during 90 days after plantlet emergence. For each assay, Catuaí (IAC144), Catucaí 2SL and Acauã varieties were evaluated, following a randomized block design, considering number of leaves, leaf area, leaf relative water content, leaf water potential, number of ordinary epidermis and stomata cell and stomata index. Shading levels affect the water status of coffee plants, resulting in alterations of morphophysiology of leaves. Increase of leaf water content occurs simultaneously with decrease of modulus of water potential and proline content, denoting an interaction between shading and water content to coffee plants. Higher proline content was verified in Catuaí leaves in comparison to Catucaí variety. With light restriction there was a reduction of ordinary epidermis cell and stomata density. Upward of leaf area and leaf number was observed when the light restriction was similar or lower to 42,86 and 25,0 %, respectively. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-03-31 |
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://coffeescience.ufla.br/index.php/Coffeescience/article/view/132 |
url |
https://coffeescience.ufla.br/index.php/Coffeescience/article/view/132 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://coffeescience.ufla.br/index.php/Coffeescience/article/view/132/pdf |
dc.rights.driver.fl_str_mv |
Copyright (c) 2011 Coffee Science - ISSN 1984-3909 https://creativecommons.org/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2011 Coffee Science - ISSN 1984-3909 https://creativecommons.org/ |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Editora UFLA |
publisher.none.fl_str_mv |
Editora UFLA |
dc.source.none.fl_str_mv |
Coffee Science - ISSN 1984-3909; Vol. 5 No. 3 (2010); 262-271 Coffee Science; Vol. 5 Núm. 3 (2010); 262-271 Coffee Science; v. 5 n. 3 (2010); 262-271 1984-3909 reponame:Coffee Science (Online) instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Coffee Science (Online) |
collection |
Coffee Science (Online) |
repository.name.fl_str_mv |
Coffee Science (Online) - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
coffeescience@dag.ufla.br||coffeescience@dag.ufla.br|| alvaro-cozadi@hotmail.com |
_version_ |
1799874918392791040 |