Leaf morphophysiology of coffee plants under different levels of light restriction

Detalhes bibliográficos
Autor(a) principal: César, Fábio Ricardo Coutinho Fontes
Data de Publicação: 2011
Outros Autores: Matsumoto, Sylvana Naomi, Viana, Anselmo Eloy Silveira, Santos, Marcos Antônio Ferreira, Bonfim, Joice Andrade
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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spelling 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
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