Factors affecting density of airborne Gibberella zeae inoculum

Detalhes bibliográficos
Autor(a) principal: Del Ponte,Emerson M.
Data de Publicação: 2005
Outros Autores: Fernandes,José Maurício C., Pierobom,Carlos R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Fitopatologia Brasileira
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000100009
Resumo: Fusarium head blight (FHB) is a disease of increasing concern in the production of wheat (Triticum aestivum). This work studied some of the factors affecting the density of airborne Gibberella zeae inoculum. Spore samplers were placed at the edge of a field in order to observe spore deposition over a period of 45 days and nights in September and October, the period that coincides with wheat flowering. Gibberella zeae colonies were counted for each period and values transformed to relative density. A stepwise regression procedure was used to identify weather variables helpful in predicting spore cloud density. In general, a predominant night-time spore deposition was observed. Precipitation and daily mean relative humidity over 90% were the factors most hightly associated with peak events of spores in the air. Models for predicting spore cloud density simulated reasonably well with the fluctuation of airborne propagules during both night and day, with potential to be integrated into an FHB risk model framework.
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spelling Factors affecting density of airborne Gibberella zeae inoculumFusarium graminearumaerobiologyspore dispersalepidemiologyFusarium head blight (FHB) is a disease of increasing concern in the production of wheat (Triticum aestivum). This work studied some of the factors affecting the density of airborne Gibberella zeae inoculum. Spore samplers were placed at the edge of a field in order to observe spore deposition over a period of 45 days and nights in September and October, the period that coincides with wheat flowering. Gibberella zeae colonies were counted for each period and values transformed to relative density. A stepwise regression procedure was used to identify weather variables helpful in predicting spore cloud density. In general, a predominant night-time spore deposition was observed. Precipitation and daily mean relative humidity over 90% were the factors most hightly associated with peak events of spores in the air. Models for predicting spore cloud density simulated reasonably well with the fluctuation of airborne propagules during both night and day, with potential to be integrated into an FHB risk model framework.Sociedade Brasileira de Fitopatologia2005-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000100009Fitopatologia Brasileira v.30 n.1 2005reponame:Fitopatologia Brasileirainstname:Sociedade Brasileira de Fitopatologia (SBF)instacron:SBF10.1590/S0100-41582005000100009info:eu-repo/semantics/openAccessDel Ponte,Emerson M.Fernandes,José Maurício C.Pierobom,Carlos R.eng2005-03-18T00:00:00Zoai:scielo:S0100-41582005000100009Revistahttp://www.scielo.br/fbONGhttps://old.scielo.br/oai/scielo-oai.php||sbf-revista@ufla.br1678-46770100-4158opendoar:2005-03-18T00:00Fitopatologia Brasileira - Sociedade Brasileira de Fitopatologia (SBF)false
dc.title.none.fl_str_mv Factors affecting density of airborne Gibberella zeae inoculum
title Factors affecting density of airborne Gibberella zeae inoculum
spellingShingle Factors affecting density of airborne Gibberella zeae inoculum
Del Ponte,Emerson M.
Fusarium graminearum
aerobiology
spore dispersal
epidemiology
title_short Factors affecting density of airborne Gibberella zeae inoculum
title_full Factors affecting density of airborne Gibberella zeae inoculum
title_fullStr Factors affecting density of airborne Gibberella zeae inoculum
title_full_unstemmed Factors affecting density of airborne Gibberella zeae inoculum
title_sort Factors affecting density of airborne Gibberella zeae inoculum
author Del Ponte,Emerson M.
author_facet Del Ponte,Emerson M.
Fernandes,José Maurício C.
Pierobom,Carlos R.
author_role author
author2 Fernandes,José Maurício C.
Pierobom,Carlos R.
author2_role author
author
dc.contributor.author.fl_str_mv Del Ponte,Emerson M.
Fernandes,José Maurício C.
Pierobom,Carlos R.
dc.subject.por.fl_str_mv Fusarium graminearum
aerobiology
spore dispersal
epidemiology
topic Fusarium graminearum
aerobiology
spore dispersal
epidemiology
description Fusarium head blight (FHB) is a disease of increasing concern in the production of wheat (Triticum aestivum). This work studied some of the factors affecting the density of airborne Gibberella zeae inoculum. Spore samplers were placed at the edge of a field in order to observe spore deposition over a period of 45 days and nights in September and October, the period that coincides with wheat flowering. Gibberella zeae colonies were counted for each period and values transformed to relative density. A stepwise regression procedure was used to identify weather variables helpful in predicting spore cloud density. In general, a predominant night-time spore deposition was observed. Precipitation and daily mean relative humidity over 90% were the factors most hightly associated with peak events of spores in the air. Models for predicting spore cloud density simulated reasonably well with the fluctuation of airborne propagules during both night and day, with potential to be integrated into an FHB risk model framework.
publishDate 2005
dc.date.none.fl_str_mv 2005-02-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000100009
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582005000100009
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-41582005000100009
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Fitopatologia
publisher.none.fl_str_mv Sociedade Brasileira de Fitopatologia
dc.source.none.fl_str_mv Fitopatologia Brasileira v.30 n.1 2005
reponame:Fitopatologia Brasileira
instname:Sociedade Brasileira de Fitopatologia (SBF)
instacron:SBF
instname_str Sociedade Brasileira de Fitopatologia (SBF)
instacron_str SBF
institution SBF
reponame_str Fitopatologia Brasileira
collection Fitopatologia Brasileira
repository.name.fl_str_mv Fitopatologia Brasileira - Sociedade Brasileira de Fitopatologia (SBF)
repository.mail.fl_str_mv ||sbf-revista@ufla.br
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