Photosynthetic efficiency of healthy leaf area influenced by angular leaf spot severity in bean field

Detalhes bibliográficos
Autor(a) principal: Canteri, Marcelo Giovanetti
Data de Publicação: 2005
Outros Autores: Godoy, Cláudia Vieira
Tipo de documento: Artigo
Idioma: por
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2291
Resumo: This paper aimed to show the relationship among healthy leaf area, angular leaf spot severity and bean yield, under field conditions, indicating the influence of this relationship on photosynthetic efficiency of leaf tissue remaining on plants. Leaf area and severity of angular leaf spot [Phaeoisariopsis griseola (Sacc.) Ferraris] of bean were weekly assessed, beginning at 30 days after emergence (DAE). Different levels of severity were reached varying the timing of fungicide spraying (fentin hydroxide 0.10% + tebuconazole 0.04%). Variations on total leaf area were consequence of natural variation on plants and also due to different physic and chemical soil conditions among plots. The relation between healthy leaf area duration (HAD) and area under disease progress curve (AUDPC) and yield (g m-2) presented R2=74.8% and healthy area absorption (HAA), AUDPC and yield (g m-2) presented R2=74.7%. Results indicated reduction of yield when severity (AUDPC) was high, even in plots with same level of healthy leaf area. So, the disease influenced the photosynthetic efficiency of healthy leaf area, besides avoiding the production of the necrotic tissue.
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spelling Photosynthetic efficiency of healthy leaf area influenced by angular leaf spot severity in bean fieldInfluência da severidade de mancha angular na eficiência fotossintética da área foliar sadia de feijoeiro, sob condições de campoPhytopatometryPhaeoisariopsis griseolaPhaseolus vulgaris.FitopatometriaPhaeoisariopsis griseolaPhaseolus vulgaris.This paper aimed to show the relationship among healthy leaf area, angular leaf spot severity and bean yield, under field conditions, indicating the influence of this relationship on photosynthetic efficiency of leaf tissue remaining on plants. Leaf area and severity of angular leaf spot [Phaeoisariopsis griseola (Sacc.) Ferraris] of bean were weekly assessed, beginning at 30 days after emergence (DAE). Different levels of severity were reached varying the timing of fungicide spraying (fentin hydroxide 0.10% + tebuconazole 0.04%). Variations on total leaf area were consequence of natural variation on plants and also due to different physic and chemical soil conditions among plots. The relation between healthy leaf area duration (HAD) and area under disease progress curve (AUDPC) and yield (g m-2) presented R2=74.8% and healthy area absorption (HAA), AUDPC and yield (g m-2) presented R2=74.7%. Results indicated reduction of yield when severity (AUDPC) was high, even in plots with same level of healthy leaf area. So, the disease influenced the photosynthetic efficiency of healthy leaf area, besides avoiding the production of the necrotic tissue.O objetivo do trabalho foi demonstrar, em parcelas experimentais sob condições de campo, a relação entre área foliar sadia, severidade de mancha angular e produção em feijoeiro indicando a influência desta relação na eficiência fotossintética do tecido foliar remanescentes nas plantas. Área foliar e severidade de mancha angular [Phaeoisariopsis griseola (Sacc.) Ferraris] de feijoeiro foram avaliadas semanalmente, iniciando-se aos 30 dias após a emergência (DAE). Obtiveram-se diferentes níveis de severidade variando-se a data de início de aplicação da mistura fungicida (fentin hydroxide 0,10% + tebuconazole 0,04%). Variações na quantidade de área foliar foram obtidas em função da variação inerente entre plantas e das diferenças de condições físicoquímicas encontradas no solo das parcelas. A relação entre duração de área foliar sadia (HAD) e a área sob a curva de progresso da doença (AUDPC) e a produção (g m-2) apresentou R2=74,8% e entre e absorção da área foliar sadia (HAA), AUDPC e a produção (g m-2) apresentou R2=74,7%. Os resultados indicaram que houve redução na produção em parcelas com valores altos de AUDPC, mesmo naquelas com mesmo nível de área foliar sadia (HAD), ou seja, a doença influenciou a eficiência fotossintética da área foliar sadia das plantas, além de impedir que a área doente necrosada produzisse.UEL2005-06-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/229110.5433/1679-0359.2005v26n2p179Semina: Ciências Agrárias; Vol. 26 No. 2 (2005); 179-186Semina: Ciências Agrárias; v. 26 n. 2 (2005); 179-1861679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2291/1971Canteri, Marcelo GiovanettiGodoy, Cláudia Vieirainfo:eu-repo/semantics/openAccess2009-10-08T12:41:21Zoai:ojs.pkp.sfu.ca:article/2291Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2009-10-08T12:41:21Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Photosynthetic efficiency of healthy leaf area influenced by angular leaf spot severity in bean field
Influência da severidade de mancha angular na eficiência fotossintética da área foliar sadia de feijoeiro, sob condições de campo
title Photosynthetic efficiency of healthy leaf area influenced by angular leaf spot severity in bean field
spellingShingle Photosynthetic efficiency of healthy leaf area influenced by angular leaf spot severity in bean field
Canteri, Marcelo Giovanetti
Phytopatometry
Phaeoisariopsis griseola
Phaseolus vulgaris.
Fitopatometria
Phaeoisariopsis griseola
Phaseolus vulgaris.
title_short Photosynthetic efficiency of healthy leaf area influenced by angular leaf spot severity in bean field
title_full Photosynthetic efficiency of healthy leaf area influenced by angular leaf spot severity in bean field
title_fullStr Photosynthetic efficiency of healthy leaf area influenced by angular leaf spot severity in bean field
title_full_unstemmed Photosynthetic efficiency of healthy leaf area influenced by angular leaf spot severity in bean field
title_sort Photosynthetic efficiency of healthy leaf area influenced by angular leaf spot severity in bean field
author Canteri, Marcelo Giovanetti
author_facet Canteri, Marcelo Giovanetti
Godoy, Cláudia Vieira
author_role author
author2 Godoy, Cláudia Vieira
author2_role author
dc.contributor.author.fl_str_mv Canteri, Marcelo Giovanetti
Godoy, Cláudia Vieira
dc.subject.por.fl_str_mv Phytopatometry
Phaeoisariopsis griseola
Phaseolus vulgaris.
Fitopatometria
Phaeoisariopsis griseola
Phaseolus vulgaris.
topic Phytopatometry
Phaeoisariopsis griseola
Phaseolus vulgaris.
Fitopatometria
Phaeoisariopsis griseola
Phaseolus vulgaris.
description This paper aimed to show the relationship among healthy leaf area, angular leaf spot severity and bean yield, under field conditions, indicating the influence of this relationship on photosynthetic efficiency of leaf tissue remaining on plants. Leaf area and severity of angular leaf spot [Phaeoisariopsis griseola (Sacc.) Ferraris] of bean were weekly assessed, beginning at 30 days after emergence (DAE). Different levels of severity were reached varying the timing of fungicide spraying (fentin hydroxide 0.10% + tebuconazole 0.04%). Variations on total leaf area were consequence of natural variation on plants and also due to different physic and chemical soil conditions among plots. The relation between healthy leaf area duration (HAD) and area under disease progress curve (AUDPC) and yield (g m-2) presented R2=74.8% and healthy area absorption (HAA), AUDPC and yield (g m-2) presented R2=74.7%. Results indicated reduction of yield when severity (AUDPC) was high, even in plots with same level of healthy leaf area. So, the disease influenced the photosynthetic efficiency of healthy leaf area, besides avoiding the production of the necrotic tissue.
publishDate 2005
dc.date.none.fl_str_mv 2005-06-30
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://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2291
10.5433/1679-0359.2005v26n2p179
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2291
identifier_str_mv 10.5433/1679-0359.2005v26n2p179
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2291/1971
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 UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 26 No. 2 (2005); 179-186
Semina: Ciências Agrárias; v. 26 n. 2 (2005); 179-186
1679-0359
1676-546X
reponame:Semina. Ciências Agrárias (Online)
instname:Universidade Estadual de Londrina (UEL)
instacron:UEL
instname_str Universidade Estadual de Londrina (UEL)
instacron_str UEL
institution UEL
reponame_str Semina. Ciências Agrárias (Online)
collection Semina. Ciências Agrárias (Online)
repository.name.fl_str_mv Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)
repository.mail.fl_str_mv semina.agrarias@uel.br
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