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| Registros recuperados : 43 | |
| 18. |  | SCARPARE FILHO, J. A.; KLUGE, R. A.; VICTORIA FILHO, R.; TESSARIOLI NETO, J. A.; JACOMINO, P. Comportamento de duas cultivares de pessegueiro com interenxerto da ameixeira Januária. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 35, n. 4, p. 757-765, abr. 2000. Título em inglês: Behavior of two peach cultivars with 'Januária' as a Japanese plum interstock.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 20. | | IKEDA, F. S.; MARCHI, G.; MARCHI, E. C. S.; GAZZIERO, D. L. P.; VICTORIA FILHO, R. Banco de sementes de plantas daninhas em cultivos de entressafra após a cultura da soja RR em Planaltina-DF IN: CONGRESSO BRASILEIRO DA CIÊNCIA DAS PLANTAS DANINHAS, XXVIII, 2012, Campo Grande, MS. Anais... Campo Grande: XXVIII Congresso Brasileiro da Ciência das Plantas Daninhas, 2012| Biblioteca(s): Embrapa Agrossilvipastoril. |
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| Registros recuperados : 43 | |
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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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