Uredospore density of Puccinia triticina races on infection efficiency in wheat

Detalhes bibliográficos
Autor(a) principal: Turra,Camila
Data de Publicação: 2017
Outros Autores: Reis,Erlei Melo, Barcellos,Amarilis Labes
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Summa phytopathologica (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-54052017000100046
Resumo: ABSTRACT Wheat leaf rust caused by the fungus Puccinia triticina may lead to damage of up to 62%. This study aimed to test the effect of different uredospore concentrations on the infectious process of four physiological races. The races MFJ-MN, MFT-MT 4002 S, TPT-HT and TDP-HT were inoculated, when the first leaf was expanded in the seedling stage, on cultivars Ônix, Abalone, Morocco and Quartzo, respectively. The tested concentrations were 0.0; 5 x 103; 10 x 103; 20 x 103 and 40 x 103 uredospores/mL mineral oil (Soltrol). After inoculation, seedlings were kept in a growth chamber at 20°C ± 2, near 100% humidity, in the dark, for 20 hours. Fifteen days after inoculation, the density of uredia/leaf was evaluated. The concentration of 40 x 103 uredospores/mL resulted in a disease intensity that allows safe differentiation between susceptible and resistant cultivars in the seedling stage, without causing leaf senescence due to high uredinium density.
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spelling Uredospore density of Puccinia triticina races on infection efficiency in wheatInoculum concentrationleaf rustphysiologic racescultivar reactionTriticum aestivumABSTRACT Wheat leaf rust caused by the fungus Puccinia triticina may lead to damage of up to 62%. This study aimed to test the effect of different uredospore concentrations on the infectious process of four physiological races. The races MFJ-MN, MFT-MT 4002 S, TPT-HT and TDP-HT were inoculated, when the first leaf was expanded in the seedling stage, on cultivars Ônix, Abalone, Morocco and Quartzo, respectively. The tested concentrations were 0.0; 5 x 103; 10 x 103; 20 x 103 and 40 x 103 uredospores/mL mineral oil (Soltrol). After inoculation, seedlings were kept in a growth chamber at 20°C ± 2, near 100% humidity, in the dark, for 20 hours. Fifteen days after inoculation, the density of uredia/leaf was evaluated. The concentration of 40 x 103 uredospores/mL resulted in a disease intensity that allows safe differentiation between susceptible and resistant cultivars in the seedling stage, without causing leaf senescence due to high uredinium density.Grupo Paulista de Fitopatologia2017-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-54052017000100046Summa Phytopathologica v.43 n.1 2017reponame:Summa phytopathologica (Online)instname:Grupo Paulista de Fitopatologiainstacron:GPF10.1590/0100-5405/1965info:eu-repo/semantics/openAccessTurra,CamilaReis,Erlei MeloBarcellos,Amarilis Labeseng2017-09-25T00:00:00Zoai:scielo:S0100-54052017000100046Revistahttp://www.scielo.br/sphttps://old.scielo.br/oai/scielo-oai.phpsumma@fca.unesp.br1980-54540100-5405opendoar:2017-09-25T00:00Summa phytopathologica (Online) - Grupo Paulista de Fitopatologiafalse
dc.title.none.fl_str_mv Uredospore density of Puccinia triticina races on infection efficiency in wheat
title Uredospore density of Puccinia triticina races on infection efficiency in wheat
spellingShingle Uredospore density of Puccinia triticina races on infection efficiency in wheat
Turra,Camila
Inoculum concentration
leaf rust
physiologic races
cultivar reaction
Triticum aestivum
title_short Uredospore density of Puccinia triticina races on infection efficiency in wheat
title_full Uredospore density of Puccinia triticina races on infection efficiency in wheat
title_fullStr Uredospore density of Puccinia triticina races on infection efficiency in wheat
title_full_unstemmed Uredospore density of Puccinia triticina races on infection efficiency in wheat
title_sort Uredospore density of Puccinia triticina races on infection efficiency in wheat
author Turra,Camila
author_facet Turra,Camila
Reis,Erlei Melo
Barcellos,Amarilis Labes
author_role author
author2 Reis,Erlei Melo
Barcellos,Amarilis Labes
author2_role author
author
dc.contributor.author.fl_str_mv Turra,Camila
Reis,Erlei Melo
Barcellos,Amarilis Labes
dc.subject.por.fl_str_mv Inoculum concentration
leaf rust
physiologic races
cultivar reaction
Triticum aestivum
topic Inoculum concentration
leaf rust
physiologic races
cultivar reaction
Triticum aestivum
description ABSTRACT Wheat leaf rust caused by the fungus Puccinia triticina may lead to damage of up to 62%. This study aimed to test the effect of different uredospore concentrations on the infectious process of four physiological races. The races MFJ-MN, MFT-MT 4002 S, TPT-HT and TDP-HT were inoculated, when the first leaf was expanded in the seedling stage, on cultivars Ônix, Abalone, Morocco and Quartzo, respectively. The tested concentrations were 0.0; 5 x 103; 10 x 103; 20 x 103 and 40 x 103 uredospores/mL mineral oil (Soltrol). After inoculation, seedlings were kept in a growth chamber at 20°C ± 2, near 100% humidity, in the dark, for 20 hours. Fifteen days after inoculation, the density of uredia/leaf was evaluated. The concentration of 40 x 103 uredospores/mL resulted in a disease intensity that allows safe differentiation between susceptible and resistant cultivars in the seedling stage, without causing leaf senescence due to high uredinium density.
publishDate 2017
dc.date.none.fl_str_mv 2017-03-01
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=S0100-54052017000100046
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-54052017000100046
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0100-5405/1965
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 Grupo Paulista de Fitopatologia
publisher.none.fl_str_mv Grupo Paulista de Fitopatologia
dc.source.none.fl_str_mv Summa Phytopathologica v.43 n.1 2017
reponame:Summa phytopathologica (Online)
instname:Grupo Paulista de Fitopatologia
instacron:GPF
instname_str Grupo Paulista de Fitopatologia
instacron_str GPF
institution GPF
reponame_str Summa phytopathologica (Online)
collection Summa phytopathologica (Online)
repository.name.fl_str_mv Summa phytopathologica (Online) - Grupo Paulista de Fitopatologia
repository.mail.fl_str_mv summa@fca.unesp.br
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