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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
28/12/2011 |
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Data da última atualização: |
11/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HERRERO-JÁUREGUI, C.; CASADO, M. A.; ZOGHBI, M. das G. B.; MARTINS-DA-SILVA, R. C. |
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Afiliação: |
CRISTINA HERRERO-JÁUREGUI, Universidad Complutense de Madrid; MIGUEL A. CASADO, Universidad Complutense de Madrid; MARIA DAS GRAÇAS BICHARA ZOGHBI, MPEG; REGINA CELIA VIANA MARTINS DA SILVA, CPATU. |
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Título: |
Chemical variability of Copaifera reticulata Ducke oleoresin. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Chemistry & Biodiversity, v. 8, n. 4, p. 674-685, Apr. 2011. |
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DOI: |
doi: 10.1002/cbdv.201000258 |
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Idioma: |
Inglês |
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Conteúdo: |
The copaiba tree (Copaifera spp.) produces an oleoresin which is highly valued due to its medicinal properties. The chemical composition of C. reticulata oleoresin was characterized, and its variability related to seasonal variation (dry and rainy seasons), to successive extractions, and to several factors associated with tree morphometry, disease, and surrounding vegetation structure was investigated. Oleoresin was collected from 24 C. reticulata individuals between October 2006 and March 2008. For seven individuals, oleoresin was extracted for a second time between three and nine months after the first extraction. For each tree, several morphometric variables, viz., the presence of termites, vines, and holes as well as the soil type and surrounding vegetation structure, were recorded. The chemical composition and concentration of the main volatile compounds were identified by GC/MS. Almost 100% of the constituents were sesquiterpenes, the three main ones being B-caryophyllene, trans-a-bergamotene, and B-bisabolene. A classification analysis separated the C. reticulata individuals in two main groups and further divided one of the main groups in two subgroups, which were defined by different concentrations of the three main compounds. The results showed high intra-population variability in the composition and concentration of sesquiterpenes, this being comparable to the interspecific variability. It was not possible to determine a clear influence of environmental, morphometrical, and structural factors on the oleoresin composition, although some compounds varied according to the soil type, the volume of oleoresin extracted, and the crown surface. MenosThe copaiba tree (Copaifera spp.) produces an oleoresin which is highly valued due to its medicinal properties. The chemical composition of C. reticulata oleoresin was characterized, and its variability related to seasonal variation (dry and rainy seasons), to successive extractions, and to several factors associated with tree morphometry, disease, and surrounding vegetation structure was investigated. Oleoresin was collected from 24 C. reticulata individuals between October 2006 and March 2008. For seven individuals, oleoresin was extracted for a second time between three and nine months after the first extraction. For each tree, several morphometric variables, viz., the presence of termites, vines, and holes as well as the soil type and surrounding vegetation structure, were recorded. The chemical composition and concentration of the main volatile compounds were identified by GC/MS. Almost 100% of the constituents were sesquiterpenes, the three main ones being B-caryophyllene, trans-a-bergamotene, and B-bisabolene. A classification analysis separated the C. reticulata individuals in two main groups and further divided one of the main groups in two subgroups, which were defined by different concentrations of the three main compounds. The results showed high intra-population variability in the composition and concentration of sesquiterpenes, this being comparable to the interspecific variability. It was not possible to determine a clear influence of environmental, morphometr... Mostrar Tudo |
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Thesagro: |
Copaíba; Óleo. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02253naa a2200193 a 4500
001 1911101
005 2022-11-11
008 2011 bl uuuu u00u1 u #d
024 7 $adoi: 10.1002/cbdv.201000258$2DOI
100 1 $aHERRERO-JÁUREGUI, C.
245 $aChemical variability of Copaifera reticulata Ducke oleoresin.$h[electronic resource]
260 $c2011
520 $aThe copaiba tree (Copaifera spp.) produces an oleoresin which is highly valued due to its medicinal properties. The chemical composition of C. reticulata oleoresin was characterized, and its variability related to seasonal variation (dry and rainy seasons), to successive extractions, and to several factors associated with tree morphometry, disease, and surrounding vegetation structure was investigated. Oleoresin was collected from 24 C. reticulata individuals between October 2006 and March 2008. For seven individuals, oleoresin was extracted for a second time between three and nine months after the first extraction. For each tree, several morphometric variables, viz., the presence of termites, vines, and holes as well as the soil type and surrounding vegetation structure, were recorded. The chemical composition and concentration of the main volatile compounds were identified by GC/MS. Almost 100% of the constituents were sesquiterpenes, the three main ones being B-caryophyllene, trans-a-bergamotene, and B-bisabolene. A classification analysis separated the C. reticulata individuals in two main groups and further divided one of the main groups in two subgroups, which were defined by different concentrations of the three main compounds. The results showed high intra-population variability in the composition and concentration of sesquiterpenes, this being comparable to the interspecific variability. It was not possible to determine a clear influence of environmental, morphometrical, and structural factors on the oleoresin composition, although some compounds varied according to the soil type, the volume of oleoresin extracted, and the crown surface.
650 $aCopaíba
650 $aÓleo
700 1 $aCASADO, M. A.
700 1 $aZOGHBI, M. das G. B.
700 1 $aMARTINS-DA-SILVA, R. C.
773 $tChemistry & Biodiversity$gv. 8, n. 4, p. 674-685, Apr. 2011.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
17/11/2021 |
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Data da última atualização: |
17/11/2021 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
SATO, J. H.; MARCHAO, R. L.; FIGUEIREDO, C. C. de; VILELA, L.; OLIVEIRA, A. D. de; CARVALHO, A. M. de. |
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Afiliação: |
JULIANA HIROMI SATO; ROBELIO LEANDRO MARCHAO, CPAC; CÍCERO CÉLIO DE FIGUEIREDO; LOURIVAL VILELA, CPAC; ALEXSANDRA DUARTE DE OLIVEIRA, CPAC; ARMINDA MOREIRA DE CARVALHO, CPAC. |
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Título: |
How Soil Organic Carbon Fractions Affect N2O Emissions in a Long-Term Integrated Crop-Livestock System: A Case Study. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
In: DATTA, R.; MEENA, R. S. (org.). Soil Carbon Stabilization to Mitigate Climate Change. New York: Springer Singapore, 2021. v. 01, p. 307-332. |
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Idioma: |
Inglês |
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Conteúdo: |
The nitrous oxide (N2O) emissions in agricultural systems are influenced by edaphoclimatic conditions, and the availability of soil organic matter (SOM) is a key factor in this process. Understand the relationship between SOM fractions and N2O emissions in cultivated soils is fundamental to the sustainable manage- ment of tropical soils. However, this relationship remains unclear. The objective of this study was to evaluate the accumulation of labile and stable fractions of SOM and their relations with N2O emissions in a 24-year field study that represents farm conditions in the Cerrado region. The following hypotheses were considered: (i) conservation systems protect SOM, avoiding its rapid decomposition and, consequently, reducing losses of N2O to the atmosphere; (ii) conservation systems favor the increase of labile and stable fractions of SOM, which has the effect of reducing the N2O emission in the soil. The following land- use systems were assessed: no-tillage with integrated crop-livestock system (NT1); no-tillage with continuous cropping (NT2); and conventional system (CT). An area of native vegetation of Cerrado was used as a reference. Nitrous oxide emissions were quantified over a period of 509 days, covering two agricul- tural years with soybean crop followed by sorghum and corn as a second crop in 2014/2015 and 2015/2016 agricultural years, respectively. Soil carbon fractions (labile and stable) and carbon in different classes of soil aggregates were also determined. The cumulative N2O emissions were larger in CT, intermediate in NT systems, and smaller in the Cerrado area. Among the agricultural systems, lower cumulative N2O emissions were observed in NT1, because of the greatest buildup of carbon in its most stable fractions and occluded in aggregates. From PCA results, it is possible to conclude that aggregation is a key factor that correlates with N2O emissions from soil. Thus, NT1 showed the largest average diameter of aggregates and presented the lowest N2O emissions among agroecosystems. Although the conservation systems show a greater microbial population, stable fractions of carbon are predominant, which decreases avail- ability for the soil microbiota, which justifies lower rates of SOM mineralization and, consequently, the lowest N2O emissions. MenosThe nitrous oxide (N2O) emissions in agricultural systems are influenced by edaphoclimatic conditions, and the availability of soil organic matter (SOM) is a key factor in this process. Understand the relationship between SOM fractions and N2O emissions in cultivated soils is fundamental to the sustainable manage- ment of tropical soils. However, this relationship remains unclear. The objective of this study was to evaluate the accumulation of labile and stable fractions of SOM and their relations with N2O emissions in a 24-year field study that represents farm conditions in the Cerrado region. The following hypotheses were considered: (i) conservation systems protect SOM, avoiding its rapid decomposition and, consequently, reducing losses of N2O to the atmosphere; (ii) conservation systems favor the increase of labile and stable fractions of SOM, which has the effect of reducing the N2O emission in the soil. The following land- use systems were assessed: no-tillage with integrated crop-livestock system (NT1); no-tillage with continuous cropping (NT2); and conventional system (CT). An area of native vegetation of Cerrado was used as a reference. Nitrous oxide emissions were quantified over a period of 509 days, covering two agricul- tural years with soybean crop followed by sorghum and corn as a second crop in 2014/2015 and 2015/2016 agricultural years, respectively. Soil carbon fractions (labile and stable) and carbon in different classes of soil aggregates were also determ... Mostrar Tudo |
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Palavras-Chave: |
Brasileiro. |
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Thesagro: |
Carbono; Cerrado; Efeito Estufa; Matéria Orgânica; Plantio Direto. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03151naa a2200253 a 4500
001 2136212
005 2021-11-17
008 2021 bl uuuu u00u1 u #d
100 1 $aSATO, J. H.
245 $aHow Soil Organic Carbon Fractions Affect N2O Emissions in a Long-Term Integrated Crop-Livestock System$bA Case Study.$h[electronic resource]
260 $c2021
520 $aThe nitrous oxide (N2O) emissions in agricultural systems are influenced by edaphoclimatic conditions, and the availability of soil organic matter (SOM) is a key factor in this process. Understand the relationship between SOM fractions and N2O emissions in cultivated soils is fundamental to the sustainable manage- ment of tropical soils. However, this relationship remains unclear. The objective of this study was to evaluate the accumulation of labile and stable fractions of SOM and their relations with N2O emissions in a 24-year field study that represents farm conditions in the Cerrado region. The following hypotheses were considered: (i) conservation systems protect SOM, avoiding its rapid decomposition and, consequently, reducing losses of N2O to the atmosphere; (ii) conservation systems favor the increase of labile and stable fractions of SOM, which has the effect of reducing the N2O emission in the soil. The following land- use systems were assessed: no-tillage with integrated crop-livestock system (NT1); no-tillage with continuous cropping (NT2); and conventional system (CT). An area of native vegetation of Cerrado was used as a reference. Nitrous oxide emissions were quantified over a period of 509 days, covering two agricul- tural years with soybean crop followed by sorghum and corn as a second crop in 2014/2015 and 2015/2016 agricultural years, respectively. Soil carbon fractions (labile and stable) and carbon in different classes of soil aggregates were also determined. The cumulative N2O emissions were larger in CT, intermediate in NT systems, and smaller in the Cerrado area. Among the agricultural systems, lower cumulative N2O emissions were observed in NT1, because of the greatest buildup of carbon in its most stable fractions and occluded in aggregates. From PCA results, it is possible to conclude that aggregation is a key factor that correlates with N2O emissions from soil. Thus, NT1 showed the largest average diameter of aggregates and presented the lowest N2O emissions among agroecosystems. Although the conservation systems show a greater microbial population, stable fractions of carbon are predominant, which decreases avail- ability for the soil microbiota, which justifies lower rates of SOM mineralization and, consequently, the lowest N2O emissions.
650 $aCarbono
650 $aCerrado
650 $aEfeito Estufa
650 $aMatéria Orgânica
650 $aPlantio Direto
653 $aBrasileiro
700 1 $aMARCHAO, R. L.
700 1 $aFIGUEIREDO, C. C. de
700 1 $aVILELA, L.
700 1 $aOLIVEIRA, A. D. de
700 1 $aCARVALHO, A. M. de
773 $tIn: DATTA, R.; MEENA, R. S. (org.). Soil Carbon Stabilization to Mitigate Climate Change. New York: Springer Singapore, 2021.$gv. 01, p. 307-332.
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