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Registro Completo |
Biblioteca(s): |
Embrapa Milho e Sorgo. |
Data corrente: |
05/08/2010 |
Data da última atualização: |
04/06/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
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. |
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. |
Título: |
Influence of leaf position that correspond to whole plant severity and diagrammatic scale for white spot of corn. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Crop Protection, Surrey, v. 29, n. 9, p. 1015-1020, 2010. |
DOI: |
10.1016/j.cropro.2010.04.012 |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Assessment; Phytopatometry. |
Thesagro: |
Zea Mays. |
Thesaurus Nal: |
Pantoea ananatis. |
Categoria do assunto: |
-- |
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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Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
07/01/2015 |
Data da última atualização: |
28/12/2023 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SOUZA, F. A. de; MENDES, C. de G.; SANTOS, R. G.; FELIPE NETO, C. A. L.; SILVA, J. B. da; GOMES, R. V. R. de S.; RIBEIRO, M. de F. |
Afiliação: |
FRANKLIN AMARO DE SOUZA, Universidade Federal Rural do Semiárido; CAROLINA DE GOUVEIA MENDES, Universidade Federal Rural do Semiárido; RICARDO GONÇALVES SANTOS, Universidade Federal Rural do Semiárido; CARLOS ANTONIO LIRA FELIPE NETO, Universidade Federal Rural do Semiárido; JARDEL BEZERRA DA SILVA, Universidade Federal Rural do Semiárido; RENATA VALÉRIA REGIS DE SOUSA GOMES, Universidade Federal Rural do Semiárido; MARCIA DE FATIMA RIBEIRO, CPATSA. |
Título: |
Coleta de recursos e atividade externa de abelhas campeiras de Scaptotrigona sp. e Plebeia aff. flavocincta (Hymenoptera, Apidae, Meliponini) no Semiárido da Caatinga. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
In: ENCONTRO ANUAL DE ETOLOGIA, 32.; SIMPÓSIO LATINO-AMERICANO DE ETOLOGIA, 5., 2014, Mossoró. Sentindo o futuro. Mossoró: Sociedade Brasileira de Etologia, 2014. |
Páginas: |
p. 49. |
Idioma: |
Português |
Conteúdo: |
Este trabalho avaliou a qualidade de recursos e a atividade externa de abelhas campeiras de Scaptotrigona sp. e Plebeia aff. flavocincta na Caatinga. |
Palavras-Chave: |
Abelhas sem ferrão; Bee; Forrageamento; Insect. |
Thesagro: |
Abelha; Caatinga; Inseto. |
Thesaurus NAL: |
Insects. |
Categoria do assunto: |
O Insetos e Entomologia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/114972/1/Marcia-1.pdf
|
Marc: |
LEADER 01118nam a2200289 a 4500 001 2004556 005 2023-12-28 008 2014 bl uuuu u00u1 u #d 100 1 $aSOUZA, F. A. de 245 $aColeta de recursos e atividade externa de abelhas campeiras de Scaptotrigona sp. e Plebeia aff. flavocincta (Hymenoptera, Apidae, Meliponini) no Semiárido da Caatinga. 260 $aIn: ENCONTRO ANUAL DE ETOLOGIA, 32.; SIMPÓSIO LATINO-AMERICANO DE ETOLOGIA, 5., 2014, Mossoró. Sentindo o futuro. Mossoró: Sociedade Brasileira de Etologia$c2014 300 $ap. 49. 520 $aEste trabalho avaliou a qualidade de recursos e a atividade externa de abelhas campeiras de Scaptotrigona sp. e Plebeia aff. flavocincta na Caatinga. 650 $aInsects 650 $aAbelha 650 $aCaatinga 650 $aInseto 653 $aAbelhas sem ferrão 653 $aBee 653 $aForrageamento 653 $aInsect 700 1 $aMENDES, C. de G. 700 1 $aSANTOS, R. G. 700 1 $aFELIPE NETO, C. A. L. 700 1 $aSILVA, J. B. da 700 1 $aGOMES, R. V. R. de S. 700 1 $aRIBEIRO, M. de F.
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