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| 10. |  | BACHA, R.E.; ISHIY, T.; YOKOYAMA, S. Competicao regional de cultivares e linhagens de arroz irrigado em Santa Catarina, 1994/95. In: REUNIAO DA CULTURA DO ARROZ IRRIGADO, 21., 1995, Porto Alegre, RS. Anais... Porto Alegre,RS: IRGA, 1995. p.129-130| Biblioteca(s): Epagri-Sede. |
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| 13. | | KNOBLAUCH, R.; BACHA, R. E.; STUKER, H. Níveis de nitrogênio e potássio para a adubgação do arroz irrigado em sistema pré-germinado. In: CONGRESSO BRASILEIRO DE ARROZ IRRIGADO, 5., 2007, Pelotas, RS. Arroz irrigado: avaliando o presente, pensando o futuro. Pelotas, RS: Gráfica Palloti, 2007. p. 504-506.| Biblioteca(s): Epagri-Sede. |
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| 14. | | PRANDO, H.F.; BACHA, R.E. Ocorrencia e controle de moluscos gastropodes em arroz irrigado, no sistema pre-germinado, em Santa Catarina. In: REUNIAO DA CULTURA DO ARROZ IRRIGADO, 21., 1995, Porto Alegre, RS. Anais... Porto Alegre,RS: IRGA, 1995. p.229-231| Biblioteca(s): Epagri-Sede. |
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Registro Completo
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
07/10/2014 |
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Data da última atualização: |
07/10/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - B |
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Autoria: |
RIBEIRO, L. P.; VENDRAMIM, J. D.; ANDRADE, M. S.; BICALHO, K. U.; SILVA, M. F. G. F.; VIEIRA, P. C.; FERNANDES, J. B. |
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Título: |
Tropical Plant Extracts as Sources of Grain-Protectant Compounds Against Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae). |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Neotropical Entomology, Berlin, v. 43, n. 5, p. 470-482, 2014. |
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Idioma: |
Português |
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Conteúdo: |
The toxicity of organic plant extracts to Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae) was assessed for three tropical plant species: branches, leaves, and seeds of Annona montana (Annonaceae), branches of Aristolochia paulistana (Aristolochiaceae), and leaves and branches of Casearia sylvestris (Salicaceae). The screening assay resulted that the extracts of A. montana seeds obtained with hexane (LC50=534.75 mg kg−1 and LT50=6.10 days) and with dichloromethane (LC50=424.67 mg kg−1 and LT50=5.03 days) were the most promising treatments, followed by the extract prepared from A. montana leaves with hexane (LC50=837.70 mg kg−1 and LT50=4.90 days). Moreover, extracts (at 1,500 mg kg−1) prepared from C. sylvestris branches with dichloromethane and A. paulistana with hexane caused significant mortality (37% and 41.5%, respectively) beyond sublethal effects on S. zeamais. Therefore, based on the biological assays, extraction yield, and evaluation of the chromatographic profile of the crude extracts by TLC, the hexane extract of A. montana seeds was selected and fractioned using liquid-liquid partitioning. The hydroalcoholic fraction caused mortality of 55.5%, significantly superior to dichloromethane fraction, which caused 35.5% of mortality. Chemical analyses (1H NMR, HPLC, and TLC) were performed,and the results showed the presence of alkaloids and acetogenins in both active fractions, which have been associated with bioactivity. Therefore, extracts prepared from A. montana seeds (especially) is an interesting source of new compounds with promising grain-protectant properties. MenosThe toxicity of organic plant extracts to Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae) was assessed for three tropical plant species: branches, leaves, and seeds of Annona montana (Annonaceae), branches of Aristolochia paulistana (Aristolochiaceae), and leaves and branches of Casearia sylvestris (Salicaceae). The screening assay resulted that the extracts of A. montana seeds obtained with hexane (LC50=534.75 mg kg−1 and LT50=6.10 days) and with dichloromethane (LC50=424.67 mg kg−1 and LT50=5.03 days) were the most promising treatments, followed by the extract prepared from A. montana leaves with hexane (LC50=837.70 mg kg−1 and LT50=4.90 days). Moreover, extracts (at 1,500 mg kg−1) prepared from C. sylvestris branches with dichloromethane and A. paulistana with hexane caused significant mortality (37% and 41.5%, respectively) beyond sublethal effects on S. zeamais. Therefore, based on the biological assays, extraction yield, and evaluation of the chromatographic profile of the crude extracts by TLC, the hexane extract of A. montana seeds was selected and fractioned using liquid-liquid partitioning. The hydroalcoholic fraction caused mortality of 55.5%, significantly superior to dichloromethane fraction, which caused 35.5% of mortality. Chemical analyses (1H NMR, HPLC, and TLC) were performed,and the results showed the presence of alkaloids and acetogenins in both active fractions, which have been associated with bioactivity. Therefore, ex... Mostrar Tudo |
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Palavras-Chave: |
Bioprospection; insecticidal activity; organic extract; sustainable pest management. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 02415naa a2200241 a 4500
001 1121893
005 2014-10-07
008 2014 bl uuuu u00u1 u #d
100 1 $aRIBEIRO, L. P.
245 $aTropical Plant Extracts as Sources of Grain-Protectant Compounds Against Sitophilus zeamais Motschulsky (Coleoptera$bCurculionidae).$h[electronic resource]
260 $c2014
520 $aThe toxicity of organic plant extracts to Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae) was assessed for three tropical plant species: branches, leaves, and seeds of Annona montana (Annonaceae), branches of Aristolochia paulistana (Aristolochiaceae), and leaves and branches of Casearia sylvestris (Salicaceae). The screening assay resulted that the extracts of A. montana seeds obtained with hexane (LC50=534.75 mg kg−1 and LT50=6.10 days) and with dichloromethane (LC50=424.67 mg kg−1 and LT50=5.03 days) were the most promising treatments, followed by the extract prepared from A. montana leaves with hexane (LC50=837.70 mg kg−1 and LT50=4.90 days). Moreover, extracts (at 1,500 mg kg−1) prepared from C. sylvestris branches with dichloromethane and A. paulistana with hexane caused significant mortality (37% and 41.5%, respectively) beyond sublethal effects on S. zeamais. Therefore, based on the biological assays, extraction yield, and evaluation of the chromatographic profile of the crude extracts by TLC, the hexane extract of A. montana seeds was selected and fractioned using liquid-liquid partitioning. The hydroalcoholic fraction caused mortality of 55.5%, significantly superior to dichloromethane fraction, which caused 35.5% of mortality. Chemical analyses (1H NMR, HPLC, and TLC) were performed,and the results showed the presence of alkaloids and acetogenins in both active fractions, which have been associated with bioactivity. Therefore, extracts prepared from A. montana seeds (especially) is an interesting source of new compounds with promising grain-protectant properties.
653 $aBioprospection
653 $ainsecticidal activity
653 $aorganic extract
653 $asustainable pest management
700 1 $aVENDRAMIM, J. D.
700 1 $aANDRADE, M. S.
700 1 $aBICALHO, K. U.
700 1 $aSILVA, M. F. G. F.
700 1 $aVIEIRA, P. C.
700 1 $aFERNANDES, J. B.
773 $tNeotropical Entomology, Berlin$gv. 43, n. 5, p. 470-482, 2014.
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