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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
12/01/1997 |
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Data da última atualização: |
27/08/2019 |
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Autoria: |
PANOBIANCO, M.; VIEIRA, R. D. |
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Afiliação: |
Maristela Panobianco, Universidade Estadual Paulista - UNESP/Faculdade de Ciências Agrarias e Veterinárias - FCAV; Roberval Daiton Vieira, Universidade Estadual Paulista - UNESP/Faculdade de Ciências Agrarias e Veterinárias/Departamento de Fitotecnia. |
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Título: |
Electrical conductivity of soybean soaked seeds. I. Effect of genotype. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 31, n. 9, p. 621-627, set. 1996. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Condutividade elétrica na solução de embebição de sementes de soja. I. Efeito do genótipo. |
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Conteúdo: |
During the period from October/92 to September/94 experiments were carried out at the Seed Laboratory, FCA/UNESP, Jaboticabal, SP, Brazil, using soybean seeds of different genotypes in order to evaluate the effect of genotype on the electrical conductivity (bulk conductivity) of soaked seeds. Seed moisture content (105=3C, 24h), standard germination (four 50-seed samples, paper towel, 30C), and vigor-accelerated aging (42C,48h) were first detemined. Undamaged soybean seeds were soaked in deionized water (four 50-seed samples, 75 ml,25C,24h) and electrical conductivity (umhos.cm-1.g1) was measured. Significant differences in conductivity were observed among genotypes having the same pattern of germination and vigor. The results have showed that electrical onductivity can be significantly influenced by genotype. |
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Palavras-Chave: |
Accelareted aging; Envelhecimento acelarado; Standard gemination. |
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Thesagro: |
Germinação; Glycine Max. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/19327/1/pab96_04_set.pdf
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Marc: |
LEADER 01536naa a2200205 a 4500
001 1104126
005 2019-08-27
008 1996 bl uuuu u00u1 u #d
100 1 $aPANOBIANCO, M.
245 $aElectrical conductivity of soybean soaked seeds. I. Effect of genotype.
260 $c1996
500 $aTítulo em português: Condutividade elétrica na solução de embebição de sementes de soja. I. Efeito do genótipo.
520 $aDuring the period from October/92 to September/94 experiments were carried out at the Seed Laboratory, FCA/UNESP, Jaboticabal, SP, Brazil, using soybean seeds of different genotypes in order to evaluate the effect of genotype on the electrical conductivity (bulk conductivity) of soaked seeds. Seed moisture content (105=3C, 24h), standard germination (four 50-seed samples, paper towel, 30C), and vigor-accelerated aging (42C,48h) were first detemined. Undamaged soybean seeds were soaked in deionized water (four 50-seed samples, 75 ml,25C,24h) and electrical conductivity (umhos.cm-1.g1) was measured. Significant differences in conductivity were observed among genotypes having the same pattern of germination and vigor. The results have showed that electrical onductivity can be significantly influenced by genotype.
650 $aGerminação
650 $aGlycine Max
653 $aAccelareted aging
653 $aEnvelhecimento acelarado
653 $aStandard gemination
700 1 $aVIEIRA, R. D.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 31, n. 9, p. 621-627, set. 1996.
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Embrapa Unidades Centrais (AI-SEDE) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
04/03/2008 |
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Data da última atualização: |
05/03/2008 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - B |
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Autoria: |
MELO, E. E. C. de; NASCIMENTO, C. W. A. do; ACCIOLY, A. M. A.; SANTOS, A. C. Q. |
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Afiliação: |
Évio Eduardo Chaves de Melo, UFRPE; Clístenes Williams Araújo do Nascimento, UFRPE; Adriana Maria Aguiar Accioly, CNPMF; Ana Cristiane Queiroz SAntos, UFRPE. |
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Título: |
Phytoextraction and fractionation of heavy metals in soil after multiple applications of natural chelants. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 65, n. 1, p. 61-68, 2008. |
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ISSN: |
0103-9016 |
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Idioma: |
Inglês |
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Notas: |
doi: 10.1590/S0103-90162008000100009 |
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Conteúdo: |
Chelate-assisted phytoextraction of heavy metals is a promising approach to clean up polluted soils. However, the most successful chelants tested so far are synthetic agents that barely degrade in soil, increasing the metal leaching risks. Natural organic acids have been proposed to enhance phytoextraction due to their higher biodegradability, but they can also be a drawback for efficient phytoextraction. This work was carried out to compare the effectiveness of multiple applications of citric and gallic acids on the availability in soil and accumulation of Cd, Pb, Cu, and Zn by velvet bean (Stizolobium aterrimum) plants. The organic acids were added as follows: 5 mmol kg-1 in the 28th cultivation day; two doses of 5 mmol kg-1 at the 28th and 31st day; and three applications at the same rate at the 28th, 31st, and 34th day of velvet bean cultivation. Soil samples were sequentially extracted and soil solution metal concentrations assessed. Neither citric acid nor gallic acid was efficient for metals phytoextraction. In general, low molecular weight organic acids (LMWOA) application increased the metal concentrations in the water soluble and exchangeable fractions. Zinc and Cu were retained mostly in the organic matter fraction. Zn was remobilized from the organic matter fraction through LMWOA application into the water soluble and exchangeable fractions. LMWOA mobilized Pb and Cu from iron oxides, but such an increase in solubility was not high enough to affect phytoextraction. MenosChelate-assisted phytoextraction of heavy metals is a promising approach to clean up polluted soils. However, the most successful chelants tested so far are synthetic agents that barely degrade in soil, increasing the metal leaching risks. Natural organic acids have been proposed to enhance phytoextraction due to their higher biodegradability, but they can also be a drawback for efficient phytoextraction. This work was carried out to compare the effectiveness of multiple applications of citric and gallic acids on the availability in soil and accumulation of Cd, Pb, Cu, and Zn by velvet bean (Stizolobium aterrimum) plants. The organic acids were added as follows: 5 mmol kg-1 in the 28th cultivation day; two doses of 5 mmol kg-1 at the 28th and 31st day; and three applications at the same rate at the 28th, 31st, and 34th day of velvet bean cultivation. Soil samples were sequentially extracted and soil solution metal concentrations assessed. Neither citric acid nor gallic acid was efficient for metals phytoextraction. In general, low molecular weight organic acids (LMWOA) application increased the metal concentrations in the water soluble and exchangeable fractions. Zinc and Cu were retained mostly in the organic matter fraction. Zn was remobilized from the organic matter fraction through LMWOA application into the water soluble and exchangeable fractions. LMWOA mobilized Pb and Cu from iron oxides, but such an increase in solubility was not high enough to affect phytoextractio... Mostrar Tudo |
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Thesagro: |
Metal; Solo. |
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Thesaurus NAL: |
pollution. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02149naa a2200217 a 4500
001 1654832
005 2008-03-05
008 2008 bl --- 0-- u #d
022 $a0103-9016
100 1 $aMELO, E. E. C. de
245 $aPhytoextraction and fractionation of heavy metals in soil after multiple applications of natural chelants.
260 $c2008
500 $adoi: 10.1590/S0103-90162008000100009
520 $aChelate-assisted phytoextraction of heavy metals is a promising approach to clean up polluted soils. However, the most successful chelants tested so far are synthetic agents that barely degrade in soil, increasing the metal leaching risks. Natural organic acids have been proposed to enhance phytoextraction due to their higher biodegradability, but they can also be a drawback for efficient phytoextraction. This work was carried out to compare the effectiveness of multiple applications of citric and gallic acids on the availability in soil and accumulation of Cd, Pb, Cu, and Zn by velvet bean (Stizolobium aterrimum) plants. The organic acids were added as follows: 5 mmol kg-1 in the 28th cultivation day; two doses of 5 mmol kg-1 at the 28th and 31st day; and three applications at the same rate at the 28th, 31st, and 34th day of velvet bean cultivation. Soil samples were sequentially extracted and soil solution metal concentrations assessed. Neither citric acid nor gallic acid was efficient for metals phytoextraction. In general, low molecular weight organic acids (LMWOA) application increased the metal concentrations in the water soluble and exchangeable fractions. Zinc and Cu were retained mostly in the organic matter fraction. Zn was remobilized from the organic matter fraction through LMWOA application into the water soluble and exchangeable fractions. LMWOA mobilized Pb and Cu from iron oxides, but such an increase in solubility was not high enough to affect phytoextraction.
650 $apollution
650 $aMetal
650 $aSolo
700 1 $aNASCIMENTO, C. W. A. do
700 1 $aACCIOLY, A. M. A.
700 1 $aSANTOS, A. C. Q.
773 $tScientia Agricola, Piracicaba$gv. 65, n. 1, p. 61-68, 2008.
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