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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
04/09/2014 |
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Data da última atualização: |
04/09/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GONÇALVES, F. J.; NUNES, C. de M. C.; FILIPPI, M. C.; ARAÚJO, L. G. de; GONÇALVES, L. de A.; SIBOV, S. T. |
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Afiliação: |
FÁBIO JOSÉ GONÇALVES, UFG; CAMILA DE MARILLAC COSTA NUNES, UFG; MARTA CRISTINA CORSI DE FILIPPI, CNPAF; LEILA GARCÊS DE ARAÚJO, UFG; LETÍCIA DE ALMEIDA GONÇALVES, UFG; SÉRGIO TADEU SIBOV, UFG. |
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Título: |
Isolation and characterization of mycorrhizal fungi in Cyrtopodium vernum Rchb. F. & Warm (Orchidaceae). |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Revista de Ciências Agrárias, Belém, PA, v. 57, n. 3, p. 244-249, jul./set. 2014. |
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DOI: |
http://dx.doi.org/10.4322/rca.ao1359 |
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Idioma: |
Inglês |
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Conteúdo: |
Mycorrhizal fungi establish mutualistic associations with the majority of vascular plants. In orchids, mycorrhizal fungi favor the processes of seed germination, seedling establishment and adult plant development. Isolation and identification of fungi that occur in mycorrhizal associations with orchids can assist in the establishment of seedlings, the reintroduction of species in nature and large-scale production. In August 2008, roots from Cyrtopodium vernum were collected in the Biological Reserve Professor José Ângelo Rizzo, a 144-ha remnant forest in the city of Mossâmedes, GO. The predominant vegetation type in the area is cerrado rupestre, and species were found growing in rocky, dry and acidic soils with low fertility. The roots were used for the isolation of mycorrhizae and to obtain transverse and longitudinal histological cuts. Two genera of Rhizoctonia-like fungi were isolated and identified: Epulorhiza and Rhizoctonia, both frequently found in association with terrestrial and rupicolous orchids. Masses of hyphae, called pelotons, were observed in histological sections of the roots within the parenchymal cells of the cortex of the roots. |
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Thesagro: |
Cerrado; Fungo; Micorriza; Orquídea. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/107751/1/mcf.pdf
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Marc: |
LEADER 01930naa a2200241 a 4500
001 1994192
005 2014-09-04
008 2014 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.4322/rca.ao1359$2DOI
100 1 $aGONÇALVES, F. J.
245 $aIsolation and characterization of mycorrhizal fungi in Cyrtopodium vernum Rchb. F. & Warm (Orchidaceae).$h[electronic resource]
260 $c2014
520 $aMycorrhizal fungi establish mutualistic associations with the majority of vascular plants. In orchids, mycorrhizal fungi favor the processes of seed germination, seedling establishment and adult plant development. Isolation and identification of fungi that occur in mycorrhizal associations with orchids can assist in the establishment of seedlings, the reintroduction of species in nature and large-scale production. In August 2008, roots from Cyrtopodium vernum were collected in the Biological Reserve Professor José Ângelo Rizzo, a 144-ha remnant forest in the city of Mossâmedes, GO. The predominant vegetation type in the area is cerrado rupestre, and species were found growing in rocky, dry and acidic soils with low fertility. The roots were used for the isolation of mycorrhizae and to obtain transverse and longitudinal histological cuts. Two genera of Rhizoctonia-like fungi were isolated and identified: Epulorhiza and Rhizoctonia, both frequently found in association with terrestrial and rupicolous orchids. Masses of hyphae, called pelotons, were observed in histological sections of the roots within the parenchymal cells of the cortex of the roots.
650 $aCerrado
650 $aFungo
650 $aMicorriza
650 $aOrquídea
700 1 $aNUNES, C. de M. C.
700 1 $aFILIPPI, M. C.
700 1 $aARAÚJO, L. G. de
700 1 $aGONÇALVES, L. de A.
700 1 $aSIBOV, S. T.
773 $tRevista de Ciências Agrárias, Belém, PA$gv. 57, n. 3, p. 244-249, jul./set. 2014.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
10/07/2014 |
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Data da última atualização: |
11/07/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
NASCENTE, A. S.; CRUCIOL, C. A. C.; COBUCCI, T.; VELINI, E. D. |
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Afiliação: |
ADRIANO STEPHAN NASCENTE, CNPAF; CARLOS ALEXANDRE COSTA CRUSCIOL, UNESP, Botucatu-SP; TARCISIO COBUCCI, CNPAF; E. D. VELINI, UNESP, Botucatu-SP. |
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Título: |
Cover crop termination timing on rice crop production in a no-till system. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Crop Science, Madison, v. 53, n. 6, p. 2659-2669, Nov./Dec. 2013. |
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DOI: |
10.2135/cropsci2013.01.0047 |
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Idioma: |
Inglês |
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Conteúdo: |
Measuring shikimic acid accumulation in response to glyphosate applications can be a rapid and accurate way to quantify and predict glyphosate-induced damage to sensitive plants. The objective of this paper was to evaluate the effect of cover crop termination timing by glyphosate application on rice (Oryza sativa L.) yield in a no-till system. A factorial experiment, arranged in a split-plot design, was conducted for 2 yr. Treatments consisted of cover crops (main plots) and timed herbicide applications (subplots) to these cover crops (30, 20, 10, and 0 d before rice planting). There was a decrease in rice yield from 2866 kg ha-1 to 2322 kg ha-1 when the herbicide was applied closer to the rice planting day. Glyphosate application on cover crops increased shikimate concentrations in rice seedlings cultivated under palisade grass (Brachiaria brizantha), signal grass (B. ruziziensis), guinea grass (Panicum maximum), and weedy fallow (spontaneous vegetation) but not under millet (Pennisetum glaucum), which behaved similarly to the control (clean fallow, no glyphosate application). Glyphosate applications in the timing intervals used were associated with stress in the rice plants, and this association increased if cover crops took longer to completely dry and if higher amounts of biomass were produced. Millet, as a cover crop, allowed the highest seedling dry matter for upland rice and the highest rice yield. Our results suggest that using millet as a cover crop, with glyphosate application far from upland rice planting day (10 d or more), was the best option for upland rice under a no-tillage system. MenosMeasuring shikimic acid accumulation in response to glyphosate applications can be a rapid and accurate way to quantify and predict glyphosate-induced damage to sensitive plants. The objective of this paper was to evaluate the effect of cover crop termination timing by glyphosate application on rice (Oryza sativa L.) yield in a no-till system. A factorial experiment, arranged in a split-plot design, was conducted for 2 yr. Treatments consisted of cover crops (main plots) and timed herbicide applications (subplots) to these cover crops (30, 20, 10, and 0 d before rice planting). There was a decrease in rice yield from 2866 kg ha-1 to 2322 kg ha-1 when the herbicide was applied closer to the rice planting day. Glyphosate application on cover crops increased shikimate concentrations in rice seedlings cultivated under palisade grass (Brachiaria brizantha), signal grass (B. ruziziensis), guinea grass (Panicum maximum), and weedy fallow (spontaneous vegetation) but not under millet (Pennisetum glaucum), which behaved similarly to the control (clean fallow, no glyphosate application). Glyphosate applications in the timing intervals used were associated with stress in the rice plants, and this association increased if cover crops took longer to completely dry and if higher amounts of biomass were produced. Millet, as a cover crop, allowed the highest seedling dry matter for upland rice and the highest rice yield. Our results suggest that using millet as a cover crop, with glyphosate... Mostrar Tudo |
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Thesagro: |
Arroz; Matéria orgânica; Oryza sativa; Plantio direto; Solo. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02268naa a2200229 a 4500
001 1990149
005 2014-07-11
008 2013 bl uuuu u00u1 u #d
024 7 $a10.2135/cropsci2013.01.0047$2DOI
100 1 $aNASCENTE, A. S.
245 $aCover crop termination timing on rice crop production in a no-till system.
260 $c2013
520 $aMeasuring shikimic acid accumulation in response to glyphosate applications can be a rapid and accurate way to quantify and predict glyphosate-induced damage to sensitive plants. The objective of this paper was to evaluate the effect of cover crop termination timing by glyphosate application on rice (Oryza sativa L.) yield in a no-till system. A factorial experiment, arranged in a split-plot design, was conducted for 2 yr. Treatments consisted of cover crops (main plots) and timed herbicide applications (subplots) to these cover crops (30, 20, 10, and 0 d before rice planting). There was a decrease in rice yield from 2866 kg ha-1 to 2322 kg ha-1 when the herbicide was applied closer to the rice planting day. Glyphosate application on cover crops increased shikimate concentrations in rice seedlings cultivated under palisade grass (Brachiaria brizantha), signal grass (B. ruziziensis), guinea grass (Panicum maximum), and weedy fallow (spontaneous vegetation) but not under millet (Pennisetum glaucum), which behaved similarly to the control (clean fallow, no glyphosate application). Glyphosate applications in the timing intervals used were associated with stress in the rice plants, and this association increased if cover crops took longer to completely dry and if higher amounts of biomass were produced. Millet, as a cover crop, allowed the highest seedling dry matter for upland rice and the highest rice yield. Our results suggest that using millet as a cover crop, with glyphosate application far from upland rice planting day (10 d or more), was the best option for upland rice under a no-tillage system.
650 $aArroz
650 $aMatéria orgânica
650 $aOryza sativa
650 $aPlantio direto
650 $aSolo
700 1 $aCRUCIOL, C. A. C.
700 1 $aCOBUCCI, T.
700 1 $aVELINI, E. D.
773 $tCrop Science, Madison$gv. 53, n. 6, p. 2659-2669, Nov./Dec. 2013.
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Embrapa Arroz e Feijão (CNPAF) |
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