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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
26/10/2009 |
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Data da última atualização: |
26/10/2009 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VENDRAME, P. R. S.; MARCHAO, R. L.; BRITO, O. R.; GUIMARÃES, M. de F.; BECQUER, T. |
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Afiliação: |
Pedro Rodolfo Siqueira Vendrame, Universidade Estadual de Londrina; ROBELIO LEANDRO MARCHAO, CPAC; Osmar Rodrigues Brito, Universidade Estadual de Londrina; Maria de Fátima Guimarães, Universidade Estadual de Londrina; Thierry Becquer, Institut de Recherche pour le Développement. |
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Título: |
Relationship between macrofauna, mineralogy and exchangeable calcium and magnesium in Cerrado Oxisols under pasture |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v. 44, n. 8, p. 996-1001, ago. 2009. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to assess the relationship between macrofauna, mineralogy and exchangeable calcium and magnesium in Cerrado Oxisols under pasture. Twelve collection points were chosen in the Distrito Federal and in Formosa municipality, Goiás state, Brazil, representing four soil groups with varied levels of calcium + magnesium and kaolinite/(kaolinite + gibbsite) ratios. Soil macrofauna was collected in triplicate at each collection point, and identified at the level of taxonomic groups. Macrofauna density showed correlation with contents of kaolinite, gibbsite and exchangeable Ca + Mg in the soils. Mineralogy and exchangeable Ca + Mg had significant effects on taxonomic groups and relative density of soil macrofauna. The termites (Isoptera) were more abundant in soils with low exchangeable Ca + Mg; earthworms (Oligochaeta), in soils with high levels of kaolinite; and Hemiptera and Coleoptera larvae were more abundant in gibbsitic soils with higher contents of total carbon |
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Palavras-Chave: |
Caulinita; Fauna do solo. |
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Thesagro: |
Cerrado; Fertilidade do solo; Mineralogia. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 01699naa a2200229 a 4500
001 1573140
005 2009-10-26
008 2009 bl --- 0-- u #d
100 1 $aVENDRAME, P. R. S.
245 $aRelationship between macrofauna, mineralogy and exchangeable calcium and magnesium in Cerrado Oxisols under pasture
260 $c2009
520 $aThe objective of this work was to assess the relationship between macrofauna, mineralogy and exchangeable calcium and magnesium in Cerrado Oxisols under pasture. Twelve collection points were chosen in the Distrito Federal and in Formosa municipality, Goiás state, Brazil, representing four soil groups with varied levels of calcium + magnesium and kaolinite/(kaolinite + gibbsite) ratios. Soil macrofauna was collected in triplicate at each collection point, and identified at the level of taxonomic groups. Macrofauna density showed correlation with contents of kaolinite, gibbsite and exchangeable Ca + Mg in the soils. Mineralogy and exchangeable Ca + Mg had significant effects on taxonomic groups and relative density of soil macrofauna. The termites (Isoptera) were more abundant in soils with low exchangeable Ca + Mg; earthworms (Oligochaeta), in soils with high levels of kaolinite; and Hemiptera and Coleoptera larvae were more abundant in gibbsitic soils with higher contents of total carbon
650 $aCerrado
650 $aFertilidade do solo
650 $aMineralogia
653 $aCaulinita
653 $aFauna do solo
700 1 $aMARCHAO, R. L.
700 1 $aBRITO, O. R.
700 1 $aGUIMARÃES, M. de F.
700 1 $aBECQUER, T.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 44, n. 8, p. 996-1001, ago. 2009.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
08/01/2024 |
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Data da última atualização: |
08/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
FROTA, G. J.; SANTOS, H. O. dos; TIRELLI, G. V.; REALE, A. L.; ROSA, S. D. V. F. da; PEREIRA, W. V. S. |
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Afiliação: |
GIOVANA JANINI FROTA, UNIVERSIDADE FEDERAL DE LAVRAS; HELOISA OLIVEIRA DOS SANTOS, UNIVERSIDADE FEDERAL DE LAVRAS; GIOVANI VIRGÍLIO TIRELLI, UNIVERSIDADE FEDERAL DE LAVRAS; ANA LUIZA REALE, UNIVERSIDADE FEDERAL DE LAVRAS; STTELA DELLYZETE VEIGA F DA ROSA, CNPCa; WILSON VICENTE SOUZA PEREIRA, UNIVERSIDADE FEDERAL DE LAVRAS. |
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Título: |
Priming of coffea arabica seeds improves the germination quality and stimulates antioxidant system enzymes. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Australian Journal of Crop Science, v. 18, n. 1, p. 37-44, 2024. |
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DOI: |
https://www.doi.org/10.21475/ajcs.24.18.01.p4028 |
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Idioma: |
Português |
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Conteúdo: |
Physiological conditioning is reported to result in faster and more uniform seedling emergence in the field and induces tolerance to environmental adversities. This study aimed to evaluate the efficiency of physiological conditioning on Coffea arabica L. seeds and drying rates through germination tests and enzymatic activity. C. arabica seeds from Catuaí Amarelo, with water contents of 43, 35 and 12%, were conditioned with distilled water, cathodic and anodic water, ascorbic acid, and sodium nitroprusside. The efficiency of the treatments was analyzed through tests of germination, emergence, electrical conductivity, and seedling growth. The activities of the enzymes superoxide dismutase, catalase, and ascorbate peroxidase were also measured. No priming agent was found to improve germination on seeds dried up to 12% water content, as little or no differences were found for those at 43%, while either ascorbic acid or sodium nitroprusside effectively improved vigor on 35% water content seeds. Our results indicate that sodium nitroprusside or ascorbic acid can be used as molecules to improve coffee seed vigor. |
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Thesagro: |
Coffea Arábica. |
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Thesaurus NAL: |
Antioxidants; Enzymes; Seed priming. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1160493/1/Priming-of-Coffea-arabica.pdf
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Marc: |
LEADER 01890naa a2200241 a 4500
001 2160493
005 2024-01-08
008 2024 bl uuuu u00u1 u #d
024 7 $ahttps://www.doi.org/10.21475/ajcs.24.18.01.p4028$2DOI
100 1 $aFROTA, G. J.
245 $aPriming of coffea arabica seeds improves the germination quality and stimulates antioxidant system enzymes.$h[electronic resource]
260 $c2024
520 $aPhysiological conditioning is reported to result in faster and more uniform seedling emergence in the field and induces tolerance to environmental adversities. This study aimed to evaluate the efficiency of physiological conditioning on Coffea arabica L. seeds and drying rates through germination tests and enzymatic activity. C. arabica seeds from Catuaí Amarelo, with water contents of 43, 35 and 12%, were conditioned with distilled water, cathodic and anodic water, ascorbic acid, and sodium nitroprusside. The efficiency of the treatments was analyzed through tests of germination, emergence, electrical conductivity, and seedling growth. The activities of the enzymes superoxide dismutase, catalase, and ascorbate peroxidase were also measured. No priming agent was found to improve germination on seeds dried up to 12% water content, as little or no differences were found for those at 43%, while either ascorbic acid or sodium nitroprusside effectively improved vigor on 35% water content seeds. Our results indicate that sodium nitroprusside or ascorbic acid can be used as molecules to improve coffee seed vigor.
650 $aAntioxidants
650 $aEnzymes
650 $aSeed priming
650 $aCoffea Arábica
700 1 $aSANTOS, H. O. dos
700 1 $aTIRELLI, G. V.
700 1 $aREALE, A. L.
700 1 $aROSA, S. D. V. F. da
700 1 $aPEREIRA, W. V. S.
773 $tAustralian Journal of Crop Science$gv. 18, n. 1, p. 37-44, 2024.
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Embrapa Café (CNPCa) |
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