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| Registros recuperados : 4 | |
| 1. |  | COSTA, A. L. S.; RAMOS, R. A. L.; COSTA, J. B. P.; LIRA-GUEDES, A. C. Morfologia de frutos e sementes de Garcinia Macrophylla Mart. (Clusiaceae) em Floresta de Várzea do Estuário Amazônico Informativo ABRATES, Brasília, DF, v. 25, n. 2, set. 2015. Edição de Anais do XIX Congresso Brasileiro de Sementes, Foz do Iguaçu, 2015. 1 CD-ROM.| Biblioteca(s): Embrapa Amapá. |
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| 2. | | RAMOS, R. A. L.; COSTA, J. B. P.; ISACKSSON, J. G. L.; LIRA-GUEDES, A. C.; GUEDES, M. C. Germinação e morfologia de plântulas de Mora paraensis (Ducke) Ducke (Fabaceae), nativa do estuário amazônico. In: JORNADA CIENTÍFICA DA EMBRAPA AMAPÁ, 1., 2015, Macapá. Resumos... Macapá: Embrapa Amapá, 2015. 1 CD ROM.| Biblioteca(s): Embrapa Amapá. |
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| 3. | | PASTANA, D. N. B.; RAMOS, R. A. L.; COSTA, J. B. P.; ISACKSSON, J. G. L.; LIRA-GUEDES, A. C. Morfologia de frutos e sementes de Hernandia Guianensis Aubl. (Hernandiaceae) no Estuário Amazônico. Informativo ABRATES, Brasília, DF, v. 25, n. 2, set. 2015. Edição de Anais do XIX Congresso Brasileiro de Sementes, Foz do Iguaçu, 2015. 1 CD-ROM.| Biblioteca(s): Embrapa Amapá. |
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| 4. | | RAMOS, R. A. L.; PASTANA, D. N. B; ISACKSSON, J. G. L.; COSTA, J. B. P.; LIRA-GUEDES, A. C. Morfologia de frutos e sementes de Vatairea guianensis Aubl. (Fabaceae), espécie de floresta de várzea do estuário amazônico, Amapá. Informativo ABRATES, Brasília, DF, v. 25, n. 2, set. 2015. Edição de Anais do XIX Congresso Brasileiro de Sementes, Foz do Iguaçu, 2015. 1 CD-ROM.| Biblioteca(s): Embrapa Amapá. |
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| Registros recuperados : 4 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
16/05/2005 |
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Data da última atualização: |
08/11/2012 |
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Autoria: |
VOLL, E.; VOLL, C. E.; VICTORIA FILHO, R. |
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Título: |
Allelopathic effects of aconitic acid on wild poinsettia (Euphorbia heterophylla) and morningglory (Ipomoea grandifolia). |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Journal of Environmental Science and Health, New York, v.B40, n. 1, p. 69-75, 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
High infestations of alexandergrass (Brachiaria plantaginea) in experimental area have reduced seedbank of some weed species in soil at a greater degree compared to those obtained with the use of an efficient herbicide. Aconitic acid (AA) has been identified in those plants in high concentration. Thus, two experiments were carried out in the laboratory to determine the effects of pure AA on weed seed germination and on endophytic fungi in wild poinsettia (Euphorbia heterophylla) and morningglory (Ipomoea grandifolia) weed species. Doses of AA (0, 0.5, 1.0, and 2.0 mM) were introduced in agar-water 0.5% medium and weed seeds treated with and without external sterilization by sodium hypochloride. Four replications of fifty seeds of each species by treatment were sown in plastic boxes with cover and maintained in germination chamber for 12 days. Reduction in germination rate, root and stem growth were observed in both species, as well as reduction in root number in morningglory were also observed at 2.0 mM concentration of AA. An increase in number of seeds with presence of endophytic fungi was also observed in both species, independently of seed sterilization, mainly of a green type fungi coloration in wild poinsettia. Aconitic acid presents allelopathic activity and can stimulate endophytic fungi species growth in weed seeds. |
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Palavras-Chave: |
Fungo endofítico. |
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Thesagro: |
Alelopatia; Erva Daninha. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01922naa a2200181 a 4500
001 1467944
005 2012-11-08
008 2005 bl --- 0-- u #d
100 1 $aVOLL, E.
245 $aAllelopathic effects of aconitic acid on wild poinsettia (Euphorbia heterophylla) and morningglory (Ipomoea grandifolia).
260 $c2005
520 $aHigh infestations of alexandergrass (Brachiaria plantaginea) in experimental area have reduced seedbank of some weed species in soil at a greater degree compared to those obtained with the use of an efficient herbicide. Aconitic acid (AA) has been identified in those plants in high concentration. Thus, two experiments were carried out in the laboratory to determine the effects of pure AA on weed seed germination and on endophytic fungi in wild poinsettia (Euphorbia heterophylla) and morningglory (Ipomoea grandifolia) weed species. Doses of AA (0, 0.5, 1.0, and 2.0 mM) were introduced in agar-water 0.5% medium and weed seeds treated with and without external sterilization by sodium hypochloride. Four replications of fifty seeds of each species by treatment were sown in plastic boxes with cover and maintained in germination chamber for 12 days. Reduction in germination rate, root and stem growth were observed in both species, as well as reduction in root number in morningglory were also observed at 2.0 mM concentration of AA. An increase in number of seeds with presence of endophytic fungi was also observed in both species, independently of seed sterilization, mainly of a green type fungi coloration in wild poinsettia. Aconitic acid presents allelopathic activity and can stimulate endophytic fungi species growth in weed seeds.
650 $aAlelopatia
650 $aErva Daninha
653 $aFungo endofítico
700 1 $aVOLL, C. E.
700 1 $aVICTORIA FILHO, R.
773 $tJournal of Environmental Science and Health, New York$gv.B40, n. 1, p. 69-75, 2005.
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