Resistance spectra of six elite breeding lines of upland rice to Pyricularia grisea

Detalhes bibliográficos
Autor(a) principal: Prabhu, Anne Sitaram
Data de Publicação: 2003
Outros Autores: Castro, Emílio da Maia de, Araújo, Leila Garcês de, Berni, Rodrigo Fascin
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/6562
Resumo: The objective of this work was to evaluate the resistance spectra of six elite breeding lines of rice, developed for improved yield and grain quality, in inoculation tests in the greenhouse and in the field. Forty-six isolates of Pyricularia grisea collected from the cultivar Primavera, 31 from the cultivar Maravilha and 19 from six elite breeding lines, totaling 96 were utilized for inoculations. Out of 11 international and 15 Brazilian pathotypes, IC-1, IB-9, and BD-16, respectively, were identified as most frequent isolates collected from the cultivar Primavera. The isolates retrieved from Maravilha belong to four international and 11 Brazilian pathotypes, the predominant ones being IB-9 and IB-49 and BB-1 and BB-21, respectively. Lines CNAs 8711 and CNAs 8983 showed resistant reaction to all test isolates from Maravilha, while CNAs 8983 was susceptible to three isolates of Primavera pertaining to the pathotype IC-1. A majority of isolates exhibiting compatible reaction to Primavera were incompatible to Maravilha and vice-versa. Field assessment of rice blast utilizing the area under disease progress curve as a criterion for measuring disease severity showed significant differences among the six breeding lines. The isolates of P. grisea exhibiting differential reaction on breeding lines can be utilized in pyramiding resistance genes in new upland rice cultivars.
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spelling Resistance spectra of six elite breeding lines of upland rice to Pyricularia griseaEspectro de resistência de seis linhagens elites de arroz altas a Pyricularia griseaOryza sativa; pathotypes; physiologic races; rice blast; inoculation methodsOryza sativa; patótipos; raças fisiológicas; brusone; métodos de inoculaçãoThe objective of this work was to evaluate the resistance spectra of six elite breeding lines of rice, developed for improved yield and grain quality, in inoculation tests in the greenhouse and in the field. Forty-six isolates of Pyricularia grisea collected from the cultivar Primavera, 31 from the cultivar Maravilha and 19 from six elite breeding lines, totaling 96 were utilized for inoculations. Out of 11 international and 15 Brazilian pathotypes, IC-1, IB-9, and BD-16, respectively, were identified as most frequent isolates collected from the cultivar Primavera. The isolates retrieved from Maravilha belong to four international and 11 Brazilian pathotypes, the predominant ones being IB-9 and IB-49 and BB-1 and BB-21, respectively. Lines CNAs 8711 and CNAs 8983 showed resistant reaction to all test isolates from Maravilha, while CNAs 8983 was susceptible to three isolates of Primavera pertaining to the pathotype IC-1. A majority of isolates exhibiting compatible reaction to Primavera were incompatible to Maravilha and vice-versa. Field assessment of rice blast utilizing the area under disease progress curve as a criterion for measuring disease severity showed significant differences among the six breeding lines. The isolates of P. grisea exhibiting differential reaction on breeding lines can be utilized in pyramiding resistance genes in new upland rice cultivars.O objetivo deste trabalho foi avaliar o espectro de resistência de seis linhagens elites de arroz de terras altas, desenvolvidas para maior produtividade e qualidade superior de grãos, através de testes de inoculação em casa de vegetação e no campo. Nos testes de inoculação, foram utilizados 96 isolados de Pyricularia grisea, sendo 46 provenientes da cultivar Primavera, 31 da cultivar Maravilha e 19 de seis linhagens elites. Os patótipos internacionais IC-1 e IB-9, e os patótipos brasileiros BD-16 foram identificados como mais freqüentes entre os isolados coletados da cultivar Primavera. Os isolados da cultivar Maravilha pertenceram a quatro patótipos internacionais e a 11 patótipos brasileiros com predominância de IB-9, IB-49, BB-1 e BB-21, respectivamente. Enquanto as linhagens CNAs 8711 e CNAs 8983 apresentaram reações de resistência para todos os isolados oriundos da cultivar Maravilha, CNAs 8983 mostrou reação suscetível para três isolados de Primavera, pertencentes ao patótipo IC-1. A maioria dos isolados que apresentaram reações compatíveis com a cultivar Primavera foram incompatíveis com a cultivar Maravilha e vice-versa. As avaliações no campo mostraram diferenças significativas entre as linhagens com relação à área sob curva de progresso da brusone nas folhas. Os isolados de P. grisea que apresentaram reações diferenciais nas linhagens podem ser utilizados para a piramidação de genes em novas cultivares de arroz de terras altas.–Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraPrabhu, Anne SitaramCastro, Emílio da Maia deAraújo, Leila Garcês deBerni, Rodrigo Fascin2003-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6562Pesquisa Agropecuaria Brasileira; v.38, n.2, fev. 2003; 203-210Pesquisa Agropecuária Brasileira; v.38, n.2, fev. 2003; 203-2101678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/6562/3619info:eu-repo/semantics/openAccess2014-08-12T19:41:23Zoai:ojs.seer.sct.embrapa.br:article/6562Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-08-12T19:41:23Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Resistance spectra of six elite breeding lines of upland rice to Pyricularia grisea
Espectro de resistência de seis linhagens elites de arroz altas a Pyricularia grisea
title Resistance spectra of six elite breeding lines of upland rice to Pyricularia grisea
spellingShingle Resistance spectra of six elite breeding lines of upland rice to Pyricularia grisea
Prabhu, Anne Sitaram
Oryza sativa; pathotypes; physiologic races; rice blast; inoculation methods
Oryza sativa; patótipos; raças fisiológicas; brusone; métodos de inoculação
title_short Resistance spectra of six elite breeding lines of upland rice to Pyricularia grisea
title_full Resistance spectra of six elite breeding lines of upland rice to Pyricularia grisea
title_fullStr Resistance spectra of six elite breeding lines of upland rice to Pyricularia grisea
title_full_unstemmed Resistance spectra of six elite breeding lines of upland rice to Pyricularia grisea
title_sort Resistance spectra of six elite breeding lines of upland rice to Pyricularia grisea
author Prabhu, Anne Sitaram
author_facet Prabhu, Anne Sitaram
Castro, Emílio da Maia de
Araújo, Leila Garcês de
Berni, Rodrigo Fascin
author_role author
author2 Castro, Emílio da Maia de
Araújo, Leila Garcês de
Berni, Rodrigo Fascin
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Prabhu, Anne Sitaram
Castro, Emílio da Maia de
Araújo, Leila Garcês de
Berni, Rodrigo Fascin
dc.subject.por.fl_str_mv Oryza sativa; pathotypes; physiologic races; rice blast; inoculation methods
Oryza sativa; patótipos; raças fisiológicas; brusone; métodos de inoculação
topic Oryza sativa; pathotypes; physiologic races; rice blast; inoculation methods
Oryza sativa; patótipos; raças fisiológicas; brusone; métodos de inoculação
description The objective of this work was to evaluate the resistance spectra of six elite breeding lines of rice, developed for improved yield and grain quality, in inoculation tests in the greenhouse and in the field. Forty-six isolates of Pyricularia grisea collected from the cultivar Primavera, 31 from the cultivar Maravilha and 19 from six elite breeding lines, totaling 96 were utilized for inoculations. Out of 11 international and 15 Brazilian pathotypes, IC-1, IB-9, and BD-16, respectively, were identified as most frequent isolates collected from the cultivar Primavera. The isolates retrieved from Maravilha belong to four international and 11 Brazilian pathotypes, the predominant ones being IB-9 and IB-49 and BB-1 and BB-21, respectively. Lines CNAs 8711 and CNAs 8983 showed resistant reaction to all test isolates from Maravilha, while CNAs 8983 was susceptible to three isolates of Primavera pertaining to the pathotype IC-1. A majority of isolates exhibiting compatible reaction to Primavera were incompatible to Maravilha and vice-versa. Field assessment of rice blast utilizing the area under disease progress curve as a criterion for measuring disease severity showed significant differences among the six breeding lines. The isolates of P. grisea exhibiting differential reaction on breeding lines can be utilized in pyramiding resistance genes in new upland rice cultivars.
publishDate 2003
dc.date.none.fl_str_mv 2003-02-01
dc.type.none.fl_str_mv
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://seer.sct.embrapa.br/index.php/pab/article/view/6562
url https://seer.sct.embrapa.br/index.php/pab/article/view/6562
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/6562/3619
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 Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.38, n.2, fev. 2003; 203-210
Pesquisa Agropecuária Brasileira; v.38, n.2, fev. 2003; 203-210
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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