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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
13/01/1999 |
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Data da última atualização: |
13/01/1999 |
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Autoria: |
IBIJBIJEN, J.; URQUIAGA, S.; ISMAILI, M.; ALVES, B. J. R.; BODDEY, R. M. |
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Título: |
Effect of arbuscular mycorrhizas on uptake of nitrogen by Brachiaria arrecta and Sorghum vulgare from soils labelled for several years with 15N. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
New Phytologist, Cambridge, v. 133, p. 487-494, 1996. |
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Idioma: |
Inglês |
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Conteúdo: |
A pot experiment was conducted under glasshouse conditions to investigate the effect of the inoculation of arbuscular mycorrhizal (AM) fungi on the growth and N uptake of two graminaceous plants: Brachiaria arrecta (Hack. ex. Th. Dur & Schinz) Stent and Sorghum vulgare (Pers.) growing in four fumigated soils which had been labelled for several years with 15N. The four soils had different chemical characteristics, especially in their P availability. The levels of root colonization by AM fungi were inversely related to the P concentration in these soils. Positive responses to AM fungal inoculation were observed for all the yield parameters except in the soil with the highest P availability (40 ug P g-1 soil, extractant Mehlich-1). In the other three soils, AM fungal inoculation of both crops increased N accumulation by between 17 and 46%, but the 15N enrichment of the N absorbed was significantly lower in the mycorrhizal plants than in those not colonized by mycorrhizal fungi. This suggests that some of the N absorbed from the soil by the mycorrhizal roots was derived from N sources other than the mineral N. |
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Palavras-Chave: |
Brachiaria arrecta; VAM. |
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Thesagro: |
Absorção; Micorriza; Nutriente; Sorghum Vulgare. |
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Thesaurus NAL: |
nutrient uptake; vesicular arbuscular mycorrhizae. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01910naa a2200265 a 4500
001 1620963
005 1999-01-13
008 1996 bl uuuu u00u1 u #d
100 1 $aIBIJBIJEN, J.
245 $aEffect of arbuscular mycorrhizas on uptake of nitrogen by Brachiaria arrecta and Sorghum vulgare from soils labelled for several years with 15N.
260 $c1996
520 $aA pot experiment was conducted under glasshouse conditions to investigate the effect of the inoculation of arbuscular mycorrhizal (AM) fungi on the growth and N uptake of two graminaceous plants: Brachiaria arrecta (Hack. ex. Th. Dur & Schinz) Stent and Sorghum vulgare (Pers.) growing in four fumigated soils which had been labelled for several years with 15N. The four soils had different chemical characteristics, especially in their P availability. The levels of root colonization by AM fungi were inversely related to the P concentration in these soils. Positive responses to AM fungal inoculation were observed for all the yield parameters except in the soil with the highest P availability (40 ug P g-1 soil, extractant Mehlich-1). In the other three soils, AM fungal inoculation of both crops increased N accumulation by between 17 and 46%, but the 15N enrichment of the N absorbed was significantly lower in the mycorrhizal plants than in those not colonized by mycorrhizal fungi. This suggests that some of the N absorbed from the soil by the mycorrhizal roots was derived from N sources other than the mineral N.
650 $anutrient uptake
650 $avesicular arbuscular mycorrhizae
650 $aAbsorção
650 $aMicorriza
650 $aNutriente
650 $aSorghum Vulgare
653 $aBrachiaria arrecta
653 $aVAM
700 1 $aURQUIAGA, S.
700 1 $aISMAILI, M.
700 1 $aALVES, B. J. R.
700 1 $aBODDEY, R. M.
773 $tNew Phytologist, Cambridge$gv. 133, p. 487-494, 1996.
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