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Registros recuperados : 136 | |
10. | | GODOY, C. V.; FLAUSINO, A. M.; SANTOS, L. C. M.; LOPES, I. de O. N. Avaliação da eficiência de fungicidas para o controle da ferrugem asiática da soja em Londrina e Tamarana, PR, na safra 2006/07. Fitopatologia Brasileira, Brasília, DF, v. 32, p. S288, ago. 2007. Suplemento, resumo 0900. Edição dos Resumos do XL Congresso Brasileiro de Fitopatologia, Maringá, PR, ago. 2007. Biblioteca(s): Embrapa Soja. |
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11. | | CARRÃO-PANIZZI, M. C.; KWANYUEN, P.; ERHAN, S. Z.; LOPES, I. de O. N. Genetic variation and environmental effects on beta-conglycinin and glycinin content in Brazilian soybean cultivars. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 43, n. 9, p. 1105-1114, set. 2008. Título em português: Variação genética e ambiental e teores de beta?conglicinina e glicinina em cultivares de soja brasileiras. Biblioteca(s): Embrapa Unidades Centrais. |
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Registros recuperados : 136 | |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
05/04/2010 |
Data da última atualização: |
16/04/2018 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
KOGA, L. J.; LOPES, I. de O. N.; GODOY, C. V. |
Afiliação: |
CNPSo - CNPq; IVANI DE OLIVEIRA NEGRAO LOPES, CNPSo; CLAUDIA VIEIRA GODOY, CNPSo. |
Título: |
Sensitivity monitoring of Phakopsora pachyrhizi populations to triazoles in Brazil. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Plant Management Network, St. Paul, 2010. |
Idioma: |
Inglês |
Conteúdo: |
Asian soybean rust (ASR) reported in 2001 in South America spread to Brazilian producing areas and is considered one of the main diseases of the crop. Fungicides used for the control belong to QoI (strobilurins) and SBI (azole) compounds. A weaker efficacy of straight azole was observed at some regions in the end of the crop season 2006/2007. To determine whether the problem observed was due to the resistance, a sensitivity monitoring test was carried out in 2008/2009 to detect possible changes in the EC50 values of the fungus population. The test was done according to FRAC methodology. Leaves samples infected with Phakopsora pachyrhizi were sent from nine Brazilian states, in a total of 36 populations, and the spores collected were inoculated in detached leaves treated with fungicides. The triazoles tested were cyproconazole, metconazole, tebuconazole, and prothioconazole (0; 0.125; 0.25; 0.5; 1.0; 2.0; 4.0; 8.0; 16.0; 32.0 ppm). Disease severity was evaluated 15 days after inoculation. The EC50 values were estimated by Proc Probit, SAS®. Differences in EC50 values among the populations were statistically significant (P < 0.01). The EC50 for cyproconazole and metconazole ranged from 0.06 to 1.37 ppm and from 0.02 to 3.89 ppm, respectively. For tebuconazole, EC50 ranged from 0.02 to 1.28 ppm. For prothioconazole, there wasn’t a distribution of EC50 values because, with 0.25 ppm, the populations tested didn’t develop symptoms of ASR. The results showed an oscillation of EC50 values in the P. pachyrhizi population from different locations during the crop season. MenosAsian soybean rust (ASR) reported in 2001 in South America spread to Brazilian producing areas and is considered one of the main diseases of the crop. Fungicides used for the control belong to QoI (strobilurins) and SBI (azole) compounds. A weaker efficacy of straight azole was observed at some regions in the end of the crop season 2006/2007. To determine whether the problem observed was due to the resistance, a sensitivity monitoring test was carried out in 2008/2009 to detect possible changes in the EC50 values of the fungus population. The test was done according to FRAC methodology. Leaves samples infected with Phakopsora pachyrhizi were sent from nine Brazilian states, in a total of 36 populations, and the spores collected were inoculated in detached leaves treated with fungicides. The triazoles tested were cyproconazole, metconazole, tebuconazole, and prothioconazole (0; 0.125; 0.25; 0.5; 1.0; 2.0; 4.0; 8.0; 16.0; 32.0 ppm). Disease severity was evaluated 15 days after inoculation. The EC50 values were estimated by Proc Probit, SAS®. Differences in EC50 values among the populations were statistically significant (P < 0.01). The EC50 for cyproconazole and metconazole ranged from 0.06 to 1.37 ppm and from 0.02 to 3.89 ppm, respectively. For tebuconazole, EC50 ranged from 0.02 to 1.28 ppm. For prothioconazole, there wasn’t a distribution of EC50 values because, with 0.25 ppm, the populations tested didn’t develop symptoms of ASR. The results showed an oscillation of EC50 ... Mostrar Tudo |
Thesagro: |
Doença de planta; Doença fungica; Ferrugem; Soja. |
Thesaurus NAL: |
Plant diseases and disorders; Rust diseases; Soybeans. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/37474/1/30632.pdf
|
Marc: |
LEADER 02193nam a2200217 a 4500 001 1663044 005 2018-04-16 008 2010 bl uuuu u00u1 u #d 100 1 $aKOGA, L. J. 245 $aSensitivity monitoring of Phakopsora pachyrhizi populations to triazoles in Brazil. 260 $aPlant Management Network, St. Paul$c2010 520 $aAsian soybean rust (ASR) reported in 2001 in South America spread to Brazilian producing areas and is considered one of the main diseases of the crop. Fungicides used for the control belong to QoI (strobilurins) and SBI (azole) compounds. A weaker efficacy of straight azole was observed at some regions in the end of the crop season 2006/2007. To determine whether the problem observed was due to the resistance, a sensitivity monitoring test was carried out in 2008/2009 to detect possible changes in the EC50 values of the fungus population. The test was done according to FRAC methodology. Leaves samples infected with Phakopsora pachyrhizi were sent from nine Brazilian states, in a total of 36 populations, and the spores collected were inoculated in detached leaves treated with fungicides. The triazoles tested were cyproconazole, metconazole, tebuconazole, and prothioconazole (0; 0.125; 0.25; 0.5; 1.0; 2.0; 4.0; 8.0; 16.0; 32.0 ppm). Disease severity was evaluated 15 days after inoculation. The EC50 values were estimated by Proc Probit, SAS®. Differences in EC50 values among the populations were statistically significant (P < 0.01). The EC50 for cyproconazole and metconazole ranged from 0.06 to 1.37 ppm and from 0.02 to 3.89 ppm, respectively. For tebuconazole, EC50 ranged from 0.02 to 1.28 ppm. For prothioconazole, there wasn’t a distribution of EC50 values because, with 0.25 ppm, the populations tested didn’t develop symptoms of ASR. The results showed an oscillation of EC50 values in the P. pachyrhizi population from different locations during the crop season. 650 $aPlant diseases and disorders 650 $aRust diseases 650 $aSoybeans 650 $aDoença de planta 650 $aDoença fungica 650 $aFerrugem 650 $aSoja 700 1 $aLOPES, I. de O. N. 700 1 $aGODOY, C. V.
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Embrapa Soja (CNPSO) |
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