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Registro Completo |
Biblioteca(s): |
Epagri-Sede. |
Data corrente: |
18/02/2016 |
Data da última atualização: |
18/02/2016 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
RIOS, J. A.; RODRIGUES, F. A.; RIOS, V. S.; PAUL, P. A.; SOUZA, M. A.; ARAUJO, L. |
Título: |
The integration of fungicide application and host resistance on blast progress on wheat under field conditions. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: 2015 APS ANNUAL MEETING, ., 2015, Pasadena, California, U.S.A. Annals... Pasadena, California: 2015 APS Annual Meeting, 2015. |
Idioma: |
Inglês |
Conteúdo: |
Wheat blast, caused by Pyricularia oryzae, continues to cause substantial losses in all major wheat-producing regions of Brazil. Fungicide and cultivar resistance are major components of management programs to minimize such losses. Two field experiments (EXP1 and EXP2) were conducted to evaluate the effect of fungicide and host resistance on blast development, as well as selected physiological parameters of the wheat plants. Plots of wheat cultivars BR-18 (partially resistant) and Guamirim (susceptible) were either treated (+F) with epoxiconazol + piraclostrobina or left nontreated (-F), and inoculated with at spore suspension of P. oryzae at anthesis. Blast severity rated on spikes and leaves was used to estimate area under blast progress curve (AUBPC) for each treatment combination. In EXP1, BR-18+F and Guamirim+F resulted in significantly lower AUDPC, 58 and 83% reduction for spikes and 70 and 62% for leaves, respectively, than the untreated checks. The corresponding values for EXP2 were 90 and 92% and 68 and 64% for spike and leaves, respectively. BR-18 had significantly lower AUBPC than Guamirim in both experiments. Maximal photosystem II quantum yield (Fv/Fm), maximal fluorescence (Fm), effective PS II quantum yield (Y(II)), quantum yield of regulated energy dissipation (Y(NPQ)) were superior in treated than nontreated plants. Reduction of blast symptoms in association with better photosynthetic performance occurred in the fungicide-treated resistant cultivar. |
Palavras-Chave: |
Pyricularia oryzae. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02155naa a2200193 a 4500 001 1124857 005 2016-02-18 008 2015 bl uuuu u00u1 u #d 100 1 $aRIOS, J. A. 245 $aThe integration of fungicide application and host resistance on blast progress on wheat under field conditions.$h[electronic resource] 260 $c2015 520 $aWheat blast, caused by Pyricularia oryzae, continues to cause substantial losses in all major wheat-producing regions of Brazil. Fungicide and cultivar resistance are major components of management programs to minimize such losses. Two field experiments (EXP1 and EXP2) were conducted to evaluate the effect of fungicide and host resistance on blast development, as well as selected physiological parameters of the wheat plants. Plots of wheat cultivars BR-18 (partially resistant) and Guamirim (susceptible) were either treated (+F) with epoxiconazol + piraclostrobina or left nontreated (-F), and inoculated with at spore suspension of P. oryzae at anthesis. Blast severity rated on spikes and leaves was used to estimate area under blast progress curve (AUBPC) for each treatment combination. In EXP1, BR-18+F and Guamirim+F resulted in significantly lower AUDPC, 58 and 83% reduction for spikes and 70 and 62% for leaves, respectively, than the untreated checks. The corresponding values for EXP2 were 90 and 92% and 68 and 64% for spike and leaves, respectively. BR-18 had significantly lower AUBPC than Guamirim in both experiments. Maximal photosystem II quantum yield (Fv/Fm), maximal fluorescence (Fm), effective PS II quantum yield (Y(II)), quantum yield of regulated energy dissipation (Y(NPQ)) were superior in treated than nontreated plants. Reduction of blast symptoms in association with better photosynthetic performance occurred in the fungicide-treated resistant cultivar. 653 $aPyricularia oryzae 700 1 $aRODRIGUES, F. A. 700 1 $aRIOS, V. S. 700 1 $aPAUL, P. A. 700 1 $aSOUZA, M. A. 700 1 $aARAUJO, L. 773 $tIn: 2015 APS ANNUAL MEETING, ., 2015, Pasadena, California, U.S.A. Annals... Pasadena, California: 2015 APS Annual Meeting, 2015.
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Registros recuperados : 6 | |
1. | | ARAUJO, L.; BISPO, W. M. S.; RIOS, J. A.; FERNANDES, S. A.; RODRIGUES, F. Á. Alkaloids and phenolics biosynthesis increases mango resistance to infection by Ceratocystis fimbriata. Bragantia, Campinas SP, v. 75, n. 2, p. 199-211, 2016.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
Biblioteca(s): Epagri-Sede. |
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3. | | RIOS, J. A.; RIOS, V. S.; PAUL, P. A.; SOUZA, M. A.; ARAUJO, L.; RODRIGUES, F. A. Fungicide and cultivar effects on the development and temporal progress of wheat blast under field conditions. Crop Protection, Amsterdã, v. 89, n. 1, p. 152-160, 2016.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Internacional - B |
Biblioteca(s): Epagri-Sede. |
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4. | | RIOS, J. A.; RODRIGUES, F. A.; RIOS, V. S.; PAUL, P. A.; SOUZA, M. A.; ARAUJO, L. The integration of fungicide application and host resistance on blast progress on wheat under field conditions. In: 2015 APS ANNUAL MEETING, ., 2015, Pasadena, California, U.S.A. Annals... Pasadena, California: 2015 APS Annual Meeting, 2015.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Epagri-Sede. |
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5. | | CACIQUE, I. S.; BISPO, W. M. S.; ARAUJO, L.; AUCIQUE-PEREZ, C. E.; RIOS, J. A.; SILVA, L. C.; RODRIGUES, F. A. Potassium-modulated photosynthetic performance of mango plants infected by Ceratocystis fimbriata. In: 2015 APS ANNUAL MEETING, ., 2015, Pasadena, California, U.S.A. Annals... Pasadena, California: APS Annual Meeting, 2015.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Epagri-Sede. |
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6. | | CACIQUE, I. S.; BISPO, W. M. S.; ARAUJO, L.; AUCIQUE-PÉREZ, C. E.; RIOS, J. A.; SILVA, L. C.; RODRIGUES, F. Á. Potassium-modulated physiological performance of mango plants infected by Ceratocystis fimbriata. Bragantia, Campinas, SP, v. 76, n. 4, p. 521-535, 2017.Tipo: Artigo em Periódico Indexado | Circulação/Nível: Nacional - B |
Biblioteca(s): Epagri-Sede. |
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Registros recuperados : 6 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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