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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
10/12/2021 |
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Data da última atualização: |
10/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOUZA, G. da S. e; GOMES, E. G.; ALVES, E. R. de A. |
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Afiliação: |
GERALDO DA SILVA E SOUZA, SIRE; ELIANE GONCALVES GOMES, SIRE; ELISEU ROBERTO DE ANDRADE ALVES, DE/PR. |
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Título: |
Two-part fractional regression model with conditional FDH responses: an application to Brazilian agriculture. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Annals of Operations Research, 2020. |
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DOI: |
https://doi.org/10.1007/s10479-020-03752-z |
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Idioma: |
Inglês |
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Notas: |
Published online: 10 August 2020. |
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Conteúdo: |
We extend the notion of a two-part fractional regression model with conditional free disposal hull efciency responses to accommodate two-stage regression analysis. The twopart regression model includes the binomial model with a nonlinear specifcation for the expected response in (0,1] and is a more general formulation in the context of fractional regressions. We use nonlinear least squares to assess the efect of covariates in the conditional efciency response. The approach is applied to Brazilian agricultural county data, as reported in the Brazilian agricultural census of 2006. The efciency measure is output oriented and assumes variable returns to scale. Output is rural gross income and inputs are land expenses, labor expenses and expenses on other technological inputs. The covariates afecting production are credit, technical assistance, a rural development index, income concentration, measured by the Gini index, and regional dummies. Overall Brazilian rural production performance responds positively to all covariates |
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Thesagro: |
Agricultura. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01637naa a2200181 a 4500
001 2137533
005 2021-12-10
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10479-020-03752-z$2DOI
100 1 $aSOUZA, G. da S. e
245 $aTwo-part fractional regression model with conditional FDH responses$ban application to Brazilian agriculture.$h[electronic resource]
260 $c2020
500 $aPublished online: 10 August 2020.
520 $aWe extend the notion of a two-part fractional regression model with conditional free disposal hull efciency responses to accommodate two-stage regression analysis. The twopart regression model includes the binomial model with a nonlinear specifcation for the expected response in (0,1] and is a more general formulation in the context of fractional regressions. We use nonlinear least squares to assess the efect of covariates in the conditional efciency response. The approach is applied to Brazilian agricultural county data, as reported in the Brazilian agricultural census of 2006. The efciency measure is output oriented and assumes variable returns to scale. Output is rural gross income and inputs are land expenses, labor expenses and expenses on other technological inputs. The covariates afecting production are credit, technical assistance, a rural development index, income concentration, measured by the Gini index, and regional dummies. Overall Brazilian rural production performance responds positively to all covariates
650 $aAgricultura
700 1 $aGOMES, E. G.
700 1 $aALVES, E. R. de A.
773 $tAnnals of Operations Research, 2020.
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Embrapa Unidades Centrais (AI-SEDE) |
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Biblioteca |
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Tipo/Formato |
Classificação |
Cutter |
Registro |
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Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
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Data corrente: |
14/01/2020 |
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Data da última atualização: |
14/01/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SABINO, A. R.; TAVARES, S. S.; RIFFEL, A.; LI, J. V.; OLIVEIRA, D. J. A.; FERES, C. I. M. A.; HENRIQUE, L.; OLIVEIRA, J. S.; CORREIA, G. D. S.; SABINO, A. R.; NASCIMENTO, T. G.; HAWKES, G.; SANTANA, A. E. G.; HOLMES, E.; BENDO, E. S. |
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Afiliação: |
ADILSON R. SABINO; SHEILA S. TAVARES; ALESSANDRO RIFFEL, CPATC; JIA V. LI; DEMETRIOS J. A. OLIVEIRA; CHRYSTIAN I. M. A. FERES; JAIM S. OLIVEIRA; GONCALO D. S. CORREIA; ANDERSON R. SABINO; TICIANO G. NASCIMENTO; GEOFREY HAWKES; ANTONIO E. G. SANTANA; ELAINE HOLMES; EDSON S. BENTO. |
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Título: |
1H NMR metabolomic approach reveals chlorogenic acid as a response ofsugarcane induced by exposure toDiatraea saccharalis. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Industrial Crops & Products, V. 140, 111651, 2019. |
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Idioma: |
Português |
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Conteúdo: |
Sugarcane(Saccharum officinarum)has been considered one of the most efficient energy crops, but its productionyield is sensitive to outbreaks of pest insects, especially the sugarcane borerDiatraea saccharalis. Geneticbreeding programs and biotechnology projects have been developed to decode the defense mechanisms of su-garcane against herbivorous insect attacks, and the develop plague-resistant plants. We performed metabolicprofile analysis of the SP791011 sugarcane variety?s response toDiatraea saccharalisherbivory, using NuclearMagnetic Resonance (NMR) spectroscopy of organic leaf extracts. The leaf response of SP791011 toD. saccharalisresulted in depletion of choline, alanine, sucrose, glutamate, trigonelline, and isomers (E)-aconitate, (Z)-aco-nitate, and higher expression of chlorogenic acid and other caffeic acid conjugates in sugarcane leaves. Theincrease in chlorogenic acid suggests the shikimic acid pathway was induced byD. saccharalisherbivory, in-creasing the biosynthesis of phenylpropanoids such as chlorogenic acid in the sugarcane leaves. In addition tothe herbivory test, we performed an in vivo biological assay by adding chlorogenic acid to an artificial diet toD.saccharaliscaterpillars. This assay demonstrated a decrease in the development time of the pupae compared withpupae from caterpillars raised under normal diet. However, deformations in moth wings fed with chlorogenicacid were observed for three concentrations tested (0.05 mg/mL, 0.5 mg/mL and 5 mg/mL) during the in vivobioassay. Chlorogenic acid may be considered a natural biopesticide and its production could be induced todevelop more resistant sugarcane varieties againstD. saccharalis. MenosSugarcane(Saccharum officinarum)has been considered one of the most efficient energy crops, but its productionyield is sensitive to outbreaks of pest insects, especially the sugarcane borerDiatraea saccharalis. Geneticbreeding programs and biotechnology projects have been developed to decode the defense mechanisms of su-garcane against herbivorous insect attacks, and the develop plague-resistant plants. We performed metabolicprofile analysis of the SP791011 sugarcane variety?s response toDiatraea saccharalisherbivory, using NuclearMagnetic Resonance (NMR) spectroscopy of organic leaf extracts. The leaf response of SP791011 toD. saccharalisresulted in depletion of choline, alanine, sucrose, glutamate, trigonelline, and isomers (E)-aconitate, (Z)-aco-nitate, and higher expression of chlorogenic acid and other caffeic acid conjugates in sugarcane leaves. Theincrease in chlorogenic acid suggests the shikimic acid pathway was induced byD. saccharalisherbivory, in-creasing the biosynthesis of phenylpropanoids such as chlorogenic acid in the sugarcane leaves. In addition tothe herbivory test, we performed an in vivo biological assay by adding chlorogenic acid to an artificial diet toD.saccharaliscaterpillars. This assay demonstrated a decrease in the development time of the pupae compared withpupae from caterpillars raised under normal diet. However, deformations in moth wings fed with chlorogenicacid were observed for three concentrations tested (0.05 mg/mL, 0.5 mg/mL and 5 mg/mL)... Mostrar Tudo |
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Thesagro: |
Cana de Açúcar; Inseto; Inseto Para Controle Biológico. |
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Thesaurus NAL: |
Sugarcane. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/208742/1/2019-h1nmr.pdf
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Marc: |
LEADER 02668naa a2200337 a 4500
001 2118719
005 2020-01-14
008 2019 bl uuuu u00u1 u #d
100 1 $aSABINO, A. R.
245 $a1H NMR metabolomic approach reveals chlorogenic acid as a response ofsugarcane induced by exposure toDiatraea saccharalis.$h[electronic resource]
260 $c2019
520 $aSugarcane(Saccharum officinarum)has been considered one of the most efficient energy crops, but its productionyield is sensitive to outbreaks of pest insects, especially the sugarcane borerDiatraea saccharalis. Geneticbreeding programs and biotechnology projects have been developed to decode the defense mechanisms of su-garcane against herbivorous insect attacks, and the develop plague-resistant plants. We performed metabolicprofile analysis of the SP791011 sugarcane variety?s response toDiatraea saccharalisherbivory, using NuclearMagnetic Resonance (NMR) spectroscopy of organic leaf extracts. The leaf response of SP791011 toD. saccharalisresulted in depletion of choline, alanine, sucrose, glutamate, trigonelline, and isomers (E)-aconitate, (Z)-aco-nitate, and higher expression of chlorogenic acid and other caffeic acid conjugates in sugarcane leaves. Theincrease in chlorogenic acid suggests the shikimic acid pathway was induced byD. saccharalisherbivory, in-creasing the biosynthesis of phenylpropanoids such as chlorogenic acid in the sugarcane leaves. In addition tothe herbivory test, we performed an in vivo biological assay by adding chlorogenic acid to an artificial diet toD.saccharaliscaterpillars. This assay demonstrated a decrease in the development time of the pupae compared withpupae from caterpillars raised under normal diet. However, deformations in moth wings fed with chlorogenicacid were observed for three concentrations tested (0.05 mg/mL, 0.5 mg/mL and 5 mg/mL) during the in vivobioassay. Chlorogenic acid may be considered a natural biopesticide and its production could be induced todevelop more resistant sugarcane varieties againstD. saccharalis.
650 $aSugarcane
650 $aCana de Açúcar
650 $aInseto
650 $aInseto Para Controle Biológico
700 1 $aTAVARES, S. S.
700 1 $aRIFFEL, A.
700 1 $aLI, J. V.
700 1 $aOLIVEIRA, D. J. A.
700 1 $aFERES, C. I. M. A.
700 1 $aHENRIQUE, L.
700 1 $aOLIVEIRA, J. S.
700 1 $aCORREIA, G. D. S.
700 1 $aSABINO, A. R.
700 1 $aNASCIMENTO, T. G.
700 1 $aHAWKES, G.
700 1 $aSANTANA, A. E. G.
700 1 $aHOLMES, E.
700 1 $aBENDO, E. S.
773 $tIndustrial Crops & Products, V. 140, 111651, 2019.
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Embrapa Tabuleiros Costeiros (CPATC) |
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