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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados; Embrapa Mandioca e Fruticultura. |
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Data corrente: |
17/08/2001 |
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Data da última atualização: |
17/02/2009 |
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Autoria: |
BRAGA, M. F.; SA, M. E. L. de. |
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Título: |
Smooth Cayenne pineapple propagation by stem sections. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Revista Brasileira de Fruticultura, Jaboticabal, v. 23, n. 1, p. 175-178, 2001. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste experimento foi definir, para a cv. Smooth Cayenne, quql a melhor combinacao entre comprimento das seccoes transversais versus numero de divisoes longitudinais do talo para produzir o maior numero, por talo, de mudas com mais de 100g e com menor infeccao com fusariose. Os experimentos foram cnduzidos sob irrigacao, na EPAMIG, em Uberaba. No experimento I, foram preparadas secoes transversais com 5; 10 e 15cm de comprimento, inteiras ou seccionadas longitudinalmente em 2 e 4 partes iguais. No experimento II,, a parte apical do talo foi plantada inteira ou dividida longitudinalmente ao meio. As seccoes foramplantadas em abril na posicao horizontal em Latossolo Vermelho-Escuro Eutrofico, com uma camada de aproximadamente 5cm de solo em cobertura,a ceu aberto. Apos 10 meses da instalacao dos experimentos, verificou-se que as seccoes inteiras com 5cm de comprimento determinaram maior peso medio das mudas (233,7g) e maior rendimento medio de mudas por talo (3,2). No experimento II, nao houve diferenca significativa entre ostratamentos, porem, em valores absolutos, os apices inteiros apresentaram maior peso medio das mudas (223,8g) e menor rendimento medio de mudas por talo (0,7). Nao houve infeccao por fusariose nas mudas obtidas.
Ananas comosus (L) Merril; Fusariose %% Ananas comosus (L) Merril. |
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Palavras-Chave: |
Ananas comosus L Meril; Comosus; Fusariosis; Merril; Mudas. |
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Thesagro: |
Ananás Comosus; Fusariose; Muda. |
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Thesaurus Nal: |
Ananas; plantlets. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01979naa a2200253 a 4500
001 1571790
005 2009-02-17
008 2001 bl uuuu u00u1 u #d
100 1 $aBRAGA, M. F.
245 $aSmooth Cayenne pineapple propagation by stem sections.
260 $c2001
520 $aO objetivo deste experimento foi definir, para a cv. Smooth Cayenne, quql a melhor combinacao entre comprimento das seccoes transversais versus numero de divisoes longitudinais do talo para produzir o maior numero, por talo, de mudas com mais de 100g e com menor infeccao com fusariose. Os experimentos foram cnduzidos sob irrigacao, na EPAMIG, em Uberaba. No experimento I, foram preparadas secoes transversais com 5; 10 e 15cm de comprimento, inteiras ou seccionadas longitudinalmente em 2 e 4 partes iguais. No experimento II,, a parte apical do talo foi plantada inteira ou dividida longitudinalmente ao meio. As seccoes foramplantadas em abril na posicao horizontal em Latossolo Vermelho-Escuro Eutrofico, com uma camada de aproximadamente 5cm de solo em cobertura,a ceu aberto. Apos 10 meses da instalacao dos experimentos, verificou-se que as seccoes inteiras com 5cm de comprimento determinaram maior peso medio das mudas (233,7g) e maior rendimento medio de mudas por talo (3,2). No experimento II, nao houve diferenca significativa entre ostratamentos, porem, em valores absolutos, os apices inteiros apresentaram maior peso medio das mudas (223,8g) e menor rendimento medio de mudas por talo (0,7). Nao houve infeccao por fusariose nas mudas obtidas. Ananas comosus (L) Merril; Fusariose %% Ananas comosus (L) Merril.
650 $aAnanas
650 $aplantlets
650 $aAnanás Comosus
650 $aFusariose
650 $aMuda
653 $aAnanas comosus L Meril
653 $aComosus
653 $aFusariosis
653 $aMerril
653 $aMudas
700 1 $aSA, M. E. L. de
773 $tRevista Brasileira de Fruticultura, Jaboticabal$gv. 23, n. 1, p. 175-178, 2001.
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Registro original: |
Embrapa Cerrados (CPAC) |
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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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