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70. | | PEREIRA, J. E.; VOLL, E. Evaluation of the response profile over time of known seedbank population of Cardiospermum halicacabum, under two soil managements. In: WORLD SOYBEAN RESEARCH CONFERENCE, 7.; INTERNATIONAL SOYBEAN PROCESSING AND UTILIZATION CONFERENCE, 4.; CONGRESSO BRASILEIRO DE SOJA, 3., 2004, Foz do Iguassu. Abstracts of contributed papers and posters. Londrina: Embrapa Soybean, 2004. p. 144. (Embrapa Soja. Documentos, 228). Editado por Flávio Moscardi, Clara Beatriz Hoffmann-Campo, Odilon Ferreira Saraiva, Paulo Roberto Galerani, Francisco Carlos Krzyzanowski, Mercedes Concordia Carrão-Panizzi. Biblioteca(s): Embrapa Soja. |
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Registros recuperados : 513 | |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
16/05/2005 |
Data da última atualização: |
19/07/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
VOLL, E.; VOLL, C. E.; VICTORIA FILHO, R. |
Afiliação: |
ELEMAR VOLL, CNPSO. |
Título: |
Allelopathic effects of aconitic acid on wild poinsettia (Euphorbia heterophylla) and morningglory (Ipomoea grandifolia). |
Ano de publicação: |
2005 |
Fonte/Imprenta: |
Journal of Environmental Science and Health, New York, v. B40, n. 1, p. 69-75, 2005. |
DOI: |
10.1081/PFC-200034226 |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
Fungo endofítico. |
Thesagro: |
Alelopatia; Erva Daninha. |
Thesaurus NAL: |
Aconitic acid. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 02019naa a2200205 a 4500 001 1467944 005 2024-07-19 008 2005 bl uuuu u00u1 u #d 024 7 $a10.1081/PFC-200034226$2DOI 100 1 $aVOLL, E. 245 $aAllelopathic effects of aconitic acid on wild poinsettia (Euphorbia heterophylla) and morningglory (Ipomoea grandifolia).$h[electronic resource] 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 $aAconitic acid 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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