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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com rosangela.lacerda@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
05/08/2010 |
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Data da última atualização: |
04/06/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CAPUCHO, A. S.; ZAMBOLIM, L.; DUARTE, H. S. S.; PARREIRA, D. F.; FERREIRA, P. A.; LANZA, F. E.; COSTA, R. V. da; CASELA, C. R.; COTA, L. V. |
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Afiliação: |
ALEXANDRE SANDRI CAPUCHO, UFV; LAERCIO ZAMBOLIM, UFV; HENRIQUE DA SILVA SILVEIRA DUARTE, UFV; DOUGLAS FERREIRA PARREIRA, UFV; UFV; FABRICIO EUSTAQUIO LANZA, UFV; RODRIGO VERAS DA COSTA, CNPMS; CARLOS ROBERTO CASELA, Pesquisador Aposentado CNPMS; LUCIANO VIANA COTA, CNPMS. |
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Título: |
Influence of leaf position that correspond to whole plant severity and diagrammatic scale for white spot of corn. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Crop Protection, Surrey, v. 29, n. 9, p. 1015-1020, 2010. |
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DOI: |
10.1016/j.cropro.2010.04.012 |
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Idioma: |
Inglês |
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Conteúdo: |
The main objective of this research is to determine the influence of leaf position on corn plants with white spot caused by Pantoea ananatis, which better represents the infection on the whole plant. A diagrammatic scale to quantify the severity of the disease was elaborated and validated. For scale elaboration, the minimal and maximal limits of the disease severity observed in the field were considered, and intermediate levels followed logarithmic increments according to the Weber?Fechner stimulation law. The scale has nine classes: 0.1, 1, 2, 4, 8, 16, 24, 32 and 64%. For scale evaluation, a severity evaluation for white spot was performed by 10 raters with no experience in disease evaluation. Initially, severity estimation was performed without a scale for 41 leaves with different levels of severity. Afterward, the same raters used the proposed diagrammatic scale. Through linear regression to compare the actual and estimate severity values, the raters? accuracy and precision were analyzed. Satisfactory accuracy and precision were achieved when estimation was performed with a diagrammatic scale. To determine the best leaf disease severity evaluation, correlation and regression analyses were performed with 25 plants of five genotypes, for a total of 284 leaves analyzed. Results analysis leads us to conclude that the severity of white spot on corn plants significantly correlates with the disease mean severity of leaves 0 and -1, i.e., a leaf of the corn ear and the one immediately below it. This scale provided good levels of accuracy and precision (a mean R2 of 94%), with errors concentrating around 10%. Raters presented increased reproducibility (R2 > 90% in 82% of cases) of severity estimates. The proposed diagrammatic scale is considered adequate to estimate the severity of white spot in corn for germplasm evaluations, for epidemiological studies and for evaluation of control strategies for this disease. MenosThe main objective of this research is to determine the influence of leaf position on corn plants with white spot caused by Pantoea ananatis, which better represents the infection on the whole plant. A diagrammatic scale to quantify the severity of the disease was elaborated and validated. For scale elaboration, the minimal and maximal limits of the disease severity observed in the field were considered, and intermediate levels followed logarithmic increments according to the Weber?Fechner stimulation law. The scale has nine classes: 0.1, 1, 2, 4, 8, 16, 24, 32 and 64%. For scale evaluation, a severity evaluation for white spot was performed by 10 raters with no experience in disease evaluation. Initially, severity estimation was performed without a scale for 41 leaves with different levels of severity. Afterward, the same raters used the proposed diagrammatic scale. Through linear regression to compare the actual and estimate severity values, the raters? accuracy and precision were analyzed. Satisfactory accuracy and precision were achieved when estimation was performed with a diagrammatic scale. To determine the best leaf disease severity evaluation, correlation and regression analyses were performed with 25 plants of five genotypes, for a total of 284 leaves analyzed. Results analysis leads us to conclude that the severity of white spot on corn plants significantly correlates with the disease mean severity of leaves 0 and -1, i.e., a leaf of the corn ear and the one immed... Mostrar Tudo |
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Palavras-Chave: |
Assessment; Phytopatometry. |
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Thesagro: |
Zea Mays. |
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Thesaurus Nal: |
Pantoea ananatis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02771naa a2200277 a 4500
001 1859316
005 2018-06-04
008 2010 bl uuuu u00u1 u #d
024 7 $a10.1016/j.cropro.2010.04.012$2DOI
100 1 $aCAPUCHO, A. S.
245 $aInfluence of leaf position that correspond to whole plant severity and diagrammatic scale for white spot of corn.$h[electronic resource]
260 $c2010
520 $aThe main objective of this research is to determine the influence of leaf position on corn plants with white spot caused by Pantoea ananatis, which better represents the infection on the whole plant. A diagrammatic scale to quantify the severity of the disease was elaborated and validated. For scale elaboration, the minimal and maximal limits of the disease severity observed in the field were considered, and intermediate levels followed logarithmic increments according to the Weber?Fechner stimulation law. The scale has nine classes: 0.1, 1, 2, 4, 8, 16, 24, 32 and 64%. For scale evaluation, a severity evaluation for white spot was performed by 10 raters with no experience in disease evaluation. Initially, severity estimation was performed without a scale for 41 leaves with different levels of severity. Afterward, the same raters used the proposed diagrammatic scale. Through linear regression to compare the actual and estimate severity values, the raters? accuracy and precision were analyzed. Satisfactory accuracy and precision were achieved when estimation was performed with a diagrammatic scale. To determine the best leaf disease severity evaluation, correlation and regression analyses were performed with 25 plants of five genotypes, for a total of 284 leaves analyzed. Results analysis leads us to conclude that the severity of white spot on corn plants significantly correlates with the disease mean severity of leaves 0 and -1, i.e., a leaf of the corn ear and the one immediately below it. This scale provided good levels of accuracy and precision (a mean R2 of 94%), with errors concentrating around 10%. Raters presented increased reproducibility (R2 > 90% in 82% of cases) of severity estimates. The proposed diagrammatic scale is considered adequate to estimate the severity of white spot in corn for germplasm evaluations, for epidemiological studies and for evaluation of control strategies for this disease.
650 $aPantoea ananatis
650 $aZea Mays
653 $aAssessment
653 $aPhytopatometry
700 1 $aZAMBOLIM, L.
700 1 $aDUARTE, H. S. S.
700 1 $aPARREIRA, D. F.
700 1 $aFERREIRA, P. A.
700 1 $aLANZA, F. E.
700 1 $aCOSTA, R. V. da
700 1 $aCASELA, C. R.
700 1 $aCOTA, L. V.
773 $tCrop Protection, Surrey$gv. 29, n. 9, p. 1015-1020, 2010.
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Embrapa Milho e Sorgo (CNPMS) |
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| Registros recuperados : 7 | |
| 1. |  | VASCONCELOS, W. S.; FREIRE, M. dos S.; ANDRADE, F. M. V. de; LOPES, K. P. Superação de dormência em sementes de PINHÃO MANSO (Jatropha curcas L.). CONGRESSO BRASILEIRO DE MAMONA, 5.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 2.; FÓRUM CAPIXABA DE PINHÃO-MANSO, 1., 2012, Guarapari. Desafios e Oportunidades: anais. Campina Grande: Embrapa Algodão, 2012. p. 407| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
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| 2. | | CAVALCANTI, J. J. V.; VASCONCELOS, W. S.; FARIAS, F. J. C.; VASCONCELOS, U. A. A.; SANTOS, R. C. dos. Mecanismos genéticos para caracteres de fibras em genótipos de algodoeiro submetidos a estresse hídrico. In: CONGRESSO BRASILEIRO DO ALGODÃO, 11., 2017, Maceió. Resumos... Inovação e rentabilidade na cotonicultura: resumos... Brasília, DF: Associação Brasileira dos Produtores de Algodão - Abrapa, 2017.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
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| 3. | | CAVALCANTI, J. J. V.; VASCONCELOS, U. A. A.; VASCONCELOS, W. S.; SANTOS, R. C. dos; FARIAS, F. J. C.; ARAUJO, G. P. de; ASSUNCAO, J. H. de. Combining ability estimates for agronomic and morphological traits in cotton under water stress. IN: WORLD COTTON RESEARCH CONFERENCE, 6., 2016. Goiânia, Brazil. Proceedings... England, UK: Innovation in Textiles, 2016. p. 131-132.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
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| 4. | | CAVALCANTI, J. J. V.; VASCONCELOS, U.; FARIAS, F. J. C.; SANTOS, R. C. dos; VASCONCELOS, W. S.; ANDRADE, P. P.; ASSUNCAO, J. H. de; ARAUJO, G. P. de; SOUZA, L. da S. S de S. Análise dialélica em algodoeiro (Gossypium hirsutum L.) para tolerância à seca. In: CONGRESSO BRASILEIRO DO ALGODÃO, 10., 2015, Foz do Iguaçu. Resumos. Brasília, DF: ABRAPA, 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
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| 5. | | FARIAS, F. J. C.; VASCONCELOS, W. S.; CAVALCANTI, J. J. V.; SANTOS, R. C. dos; VASCONCELOS, U. A. A.; ANDRADE, F. P.; ASSUNCAO, J. H. de; ARAUJO, G. P. de; SOUZA, L. da S. S. de. Análise dialélica para caracteres tecnológicos de fibras em híbridos de algodoeiro. In: CONGRESSO BRASILEIRO DO ALGODÃO, 10., 2015, Foz do Iguaçu. Resumos. Brasília, DF: ABRAPA, 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
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| 6. | | VASCONCELOS, W. S.; CASTELLON, R. E. R.; GOMES, E. M.; NOBREGA, M. B. de M.; MILANI, M.; SOFIATTI, V.; SILVA FILHO, J. L. da; LIRA, A. J. S.; SOUSA, F. Q. de; ANASTÁCIO, D. G.; ANASTÁCIO, F. D. G.; ARAUJO, K. K. S. G. e S. Avaliação da cultivar BRS GABRIELA em diferentes populações em baixa altitude na Paraíba. CONGRESSO BRASILEIRO DE MAMONA, 5.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 2.; FÓRUM CAPIXABA DE PINHÃO-MANSO, 1., 2012, Guarapari. Desafios e Oportunidades: anais. Campina Grande: Embrapa Algodão, 2012. p. 347| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
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| 7. | | VASCONCELOS, W. S.; CASTELLON, R. E. R.; GOMES, E. M.; NOBREGA, M. B. de M.; MILANI, M.; SOFIATTI, V.; SILVA FILHO, J. L. da; LIRA, A. J. S.; SOUSA, F. Q. de; ANASTÁCIO, D. G.; ANASTÁCIO, F. D. G.; ARAUJO, K. K. S. G. e S. Avaliação da linhagem CNPAM 2009-7 de porte anão em diferentes populações no distrito irrigado de São Gonçalo - Sousa - PB. CONGRESSO BRASILEIRO DE MAMONA, 5.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 2.; FÓRUM CAPIXABA DE PINHÃO-MANSO, 1., 2012, Guarapari. Desafios e Oportunidades: anais. Campina Grande: Embrapa Algodão, 2012. p. 348| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
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| Registros recuperados : 7 | |
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