Factors affecting density of airborne Gibberella zeae inoculum
Autor(a) principal: | |
---|---|
Data de Publicação: | 2005 |
Outros Autores: | , |
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. |
id |
SBF-3_223ed3c6e9d569b8732eb19629fc21bc |
---|---|
oai_identifier_str |
oai:scielo:S0100-41582005000100009 |
network_acronym_str |
SBF-3 |
network_name_str |
Fitopatologia Brasileira |
repository_id_str |
|
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 |
_version_ |
1754734650209599488 |