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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
09/01/2014 |
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Data da última atualização: |
24/01/2018 |
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Autoria: |
MEDEIROS, J. G. F.; ARAUJO NETO, A. C.; MENEZES, N. P. da C.; NASCIMENTO, L. C. do. |
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Título: |
Sanidade e germinação de sementes de Clitoria fairchildiana Howard tratadas com extratos de plantas. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Pesquisa Florestal Brasileira, Colombo, v. 33, n. 76, p. 403-408, out./dez. 2013. |
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DOI: |
10.4336/2013.pfb.33.76.541 |
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Idioma: |
Português |
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Conteúdo: |
O uso de extratos de plantas com propriedades antimicrobianas é uma alternativa ecológica e promissora para substituir a proteção promovida pela aplicação de fungicidas e podem ser utilizados com outras práticas de manejo integrado de doenças. Essa pesquisa avaliou a interferência da aplicação dos extratos de melão-de-são-caetano (Momordica charantia L.) e alamanda (Allamanda blanchetti L.) sobre a micoflora e a germinação de sementes de Clitoria fairchildiana Howard. Essa espécie foi selecionada por apresentar boa produção de sementes e crescimento rápido. Os tratamentos consistiram do controle (sementes não tratadas); fungicida Dicarboximida (240 g 100 kg-1), extratos etanólicos de melão-de-são-caetano e alamanda nas concentrações de 10, 100, 500 e 1000 ppm. No teste de germinação avaliou-se a porcentagem de germinação, a primeira contagem e o índice de velocidade de germinação. O extrato de melão-de-são-caetano, na concentração de 1000 ppm, reduz significativamente a micoflora associada às sementes de C. fairchildiana, favorecendo seu desempenho germinativo. A concentração de 1000 ppm do extrato de alamanda reduz de forma eficiente o crescimento de Rhizopus stolonifer. |
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Palavras-Chave: |
Alternative control; Controle alternativo; Extratos vegetais; Patologia de sementes. |
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Thesaurus Nal: |
seed pathology; vegetable extracts. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/102675/1/SanidadeGerminacao.pdf
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Marc: |
LEADER 02032naa a2200241 a 4500
001 1975369
005 2018-01-24
008 2013 bl uuuu u00u1 u #d
024 7 $a10.4336/2013.pfb.33.76.541$2DOI
100 1 $aMEDEIROS, J. G. F.
245 $aSanidade e germinação de sementes de Clitoria fairchildiana Howard tratadas com extratos de plantas.$h[electronic resource]
260 $c2013
520 $aO uso de extratos de plantas com propriedades antimicrobianas é uma alternativa ecológica e promissora para substituir a proteção promovida pela aplicação de fungicidas e podem ser utilizados com outras práticas de manejo integrado de doenças. Essa pesquisa avaliou a interferência da aplicação dos extratos de melão-de-são-caetano (Momordica charantia L.) e alamanda (Allamanda blanchetti L.) sobre a micoflora e a germinação de sementes de Clitoria fairchildiana Howard. Essa espécie foi selecionada por apresentar boa produção de sementes e crescimento rápido. Os tratamentos consistiram do controle (sementes não tratadas); fungicida Dicarboximida (240 g 100 kg-1), extratos etanólicos de melão-de-são-caetano e alamanda nas concentrações de 10, 100, 500 e 1000 ppm. No teste de germinação avaliou-se a porcentagem de germinação, a primeira contagem e o índice de velocidade de germinação. O extrato de melão-de-são-caetano, na concentração de 1000 ppm, reduz significativamente a micoflora associada às sementes de C. fairchildiana, favorecendo seu desempenho germinativo. A concentração de 1000 ppm do extrato de alamanda reduz de forma eficiente o crescimento de Rhizopus stolonifer.
650 $aseed pathology
650 $avegetable extracts
653 $aAlternative control
653 $aControle alternativo
653 $aExtratos vegetais
653 $aPatologia de sementes
700 1 $aARAUJO NETO, A. C.
700 1 $aMENEZES, N. P. da C.
700 1 $aNASCIMENTO, L. C. do
773 $tPesquisa Florestal Brasileira, Colombo$gv. 33, n. 76, p. 403-408, out./dez. 2013.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
08/02/2018 |
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Data da última atualização: |
08/02/2018 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CASTRO, V. L. S. S. de. |
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Afiliação: |
VERA LUCIA SCHERHOLZ S DE CASTRO, CNPMA. |
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Título: |
Environmental influence on nanoecotoxicity of carbon nanomaterials and nanoparticles. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
IN: BRAZILIAN MRS MEETING, 16., 2017, Gramado. Proceedings... Gramado: Sociedade Brasileira de Pesquisa em Materiais, 2017. Ref. Q.OR3.9. p. 72. |
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Idioma: |
Inglês |
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Conteúdo: |
Nanotechnology compounds may pose a risk to the environment due to their specific properties and to the potential widespread use. Despite a considerable amount of studies, knowledge gaps between nanotoxicological research and nanomaterial (NM) safety remain large. Of particular interest is the aquatic environment which tend to be the ultimate sink for contaminants. Once in the aquatic environment, NM are highly affected by theirsurroundings like the presence of natural organic material (NOM) and the influence of UV irradiation, among others.Given the possibility of long-term exposure of NM, the specific methodology for nanotoxicology analysis need development.Thus, it becomes important to apply a battery of bioassays in the evaluation of their potential hazard taking into account these factors. More than that, NM realistic environmental concentration may be affectedunder environmental influence on its fate and transport. For example, NOM significantly improved the stability of graphene oxide (GO) in water.Also, nano-TiO2 photocatalytic properties can result in enhanced toxicity effects.In the same way,GO photoreacts under simulated sunlight.Recently, our study showed thatthe presence of NOM changed GO toxic effects on aquatic organisms.In order to define the environmental risks and identify new tests directions, it is important to understand these issues. Thereafter, bioassays may be performed in different organisms exposed in different experimental conditions. For that, various biological endpoints may be investigated as survival rates, malformation, hatching and biochemical biomarkers. Accordingly, the improved understanding of matrix interactions will help stakeholders in performing nanomaterials relevant risk management. MenosNanotechnology compounds may pose a risk to the environment due to their specific properties and to the potential widespread use. Despite a considerable amount of studies, knowledge gaps between nanotoxicological research and nanomaterial (NM) safety remain large. Of particular interest is the aquatic environment which tend to be the ultimate sink for contaminants. Once in the aquatic environment, NM are highly affected by theirsurroundings like the presence of natural organic material (NOM) and the influence of UV irradiation, among others.Given the possibility of long-term exposure of NM, the specific methodology for nanotoxicology analysis need development.Thus, it becomes important to apply a battery of bioassays in the evaluation of their potential hazard taking into account these factors. More than that, NM realistic environmental concentration may be affectedunder environmental influence on its fate and transport. For example, NOM significantly improved the stability of graphene oxide (GO) in water.Also, nano-TiO2 photocatalytic properties can result in enhanced toxicity effects.In the same way,GO photoreacts under simulated sunlight.Recently, our study showed thatthe presence of NOM changed GO toxic effects on aquatic organisms.In order to define the environmental risks and identify new tests directions, it is important to understand these issues. Thereafter, bioassays may be performed in different organisms exposed in different experimental conditions. For that, var... Mostrar Tudo |
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Palavras-Chave: |
Ectoxicology; Nanoecotoxicity. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/172374/1/RA-CastroVLSS-16BrazilMRSMeeting-2017-p72.pdf
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Marc: |
LEADER 02285nam a2200133 a 4500
001 2087404
005 2018-02-08
008 2017 bl uuuu u00u1 u #d
100 1 $aCASTRO, V. L. S. S. de
245 $aEnvironmental influence on nanoecotoxicity of carbon nanomaterials and nanoparticles.$h[electronic resource]
260 $aIN: BRAZILIAN MRS MEETING, 16., 2017, Gramado. Proceedings... Gramado: Sociedade Brasileira de Pesquisa em Materiais, 2017. Ref. Q.OR3.9. p. 72.$c2017
520 $aNanotechnology compounds may pose a risk to the environment due to their specific properties and to the potential widespread use. Despite a considerable amount of studies, knowledge gaps between nanotoxicological research and nanomaterial (NM) safety remain large. Of particular interest is the aquatic environment which tend to be the ultimate sink for contaminants. Once in the aquatic environment, NM are highly affected by theirsurroundings like the presence of natural organic material (NOM) and the influence of UV irradiation, among others.Given the possibility of long-term exposure of NM, the specific methodology for nanotoxicology analysis need development.Thus, it becomes important to apply a battery of bioassays in the evaluation of their potential hazard taking into account these factors. More than that, NM realistic environmental concentration may be affectedunder environmental influence on its fate and transport. For example, NOM significantly improved the stability of graphene oxide (GO) in water.Also, nano-TiO2 photocatalytic properties can result in enhanced toxicity effects.In the same way,GO photoreacts under simulated sunlight.Recently, our study showed thatthe presence of NOM changed GO toxic effects on aquatic organisms.In order to define the environmental risks and identify new tests directions, it is important to understand these issues. Thereafter, bioassays may be performed in different organisms exposed in different experimental conditions. For that, various biological endpoints may be investigated as survival rates, malformation, hatching and biochemical biomarkers. Accordingly, the improved understanding of matrix interactions will help stakeholders in performing nanomaterials relevant risk management.
653 $aEctoxicology
653 $aNanoecotoxicity
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Embrapa Meio Ambiente (CNPMA) |
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