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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
30/06/1997 |
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Data da última atualização: |
30/06/1997 |
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Autoria: |
DOBEREINER, Johanna. |
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Título: |
Manganese toxicity in Rhizobium - bean symbiosis (Phaseolus vulgaris L.). |
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Ano de publicação: |
1963 |
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Fonte/Imprenta: |
Wisconsin: University of Wisconsin, 1963. |
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Páginas: |
135p. |
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Série: |
tese de Mestrado. |
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Idioma: |
Inglês |
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Notas: |
Tese de Mestrado. Orientada por: O.N.Allem e I.L.Baldwin. |
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Conteúdo: |
The effect on manganese toxicity on the nitrogen fixing symbiosis in Phaseolus vulgaris was studied. In 4 laboratory experiments the resistence to manganese of 20 strains of Rhizobium phaseoli, growing in liquid culture medium with different H-ion concentrations, was studied. Three greenhouse experiments werw carried out to observe manganese toxicity effects on plant growth, nodulation and nitrogen fixation, at two H-ion concentrations and at three calcium levels. Rhizobium growth was affected only by manganese concentrations above 100 ppm, when the Ph of the medium was above 6.0. At pH4.6 however, 25 ppm manganese were toxic to most of the strains. Different strains varied in their sensitivity to manganese and to high H-ion concentrations but the two effects were independent of each other. plant passage in normal plants or in plants showing manganese toxicity symptoms and containing more than 1200 ppm manganese, had no effect on the ability of the strains to grow in culture medium containing high manganese concentrations. Manganese concentrations of 12.5 and 25.0 ppm on a sand weight basis reduced the total nitrogen in plants per pot by 13% when ammonium nitrate was the nitrogen source. The total nitrogen in the plant dependent on symbiotic nitrogen fixation was reduced by 30 t0 60% depending on the inoculated strain of Rhizobium phaseoli. Increasing manganese levels reduced the dry weight and nitrogen content of plants, the nodule number and size, the nodule weight and the hemoglobin and nitrogen content in...... MenosThe effect on manganese toxicity on the nitrogen fixing symbiosis in Phaseolus vulgaris was studied. In 4 laboratory experiments the resistence to manganese of 20 strains of Rhizobium phaseoli, growing in liquid culture medium with different H-ion concentrations, was studied. Three greenhouse experiments werw carried out to observe manganese toxicity effects on plant growth, nodulation and nitrogen fixation, at two H-ion concentrations and at three calcium levels. Rhizobium growth was affected only by manganese concentrations above 100 ppm, when the Ph of the medium was above 6.0. At pH4.6 however, 25 ppm manganese were toxic to most of the strains. Different strains varied in their sensitivity to manganese and to high H-ion concentrations but the two effects were independent of each other. plant passage in normal plants or in plants showing manganese toxicity symptoms and containing more than 1200 ppm manganese, had no effect on the ability of the strains to grow in culture medium containing high manganese concentrations. Manganese concentrations of 12.5 and 25.0 ppm on a sand weight basis reduced the total nitrogen in plants per pot by 13% when ammonium nitrate was the nitrogen source. The total nitrogen in the plant dependent on symbiotic nitrogen fixation was reduced by 30 t0 60% depending on the inoculated strain of Rhizobium phaseoli. Increasing manganese levels reduced the dry weight and nitrogen content of plants, the nodule number and size, the nodule weight and the... Mostrar Tudo |
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Palavras-Chave: |
Ca; FBN; Fixacao biologica de nitrogenio; Growth; Mn; NBF; Nitrogen fixing bacteria; Plants; Root nodulation. |
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Thesagro: |
Acidez; Cálcio; Crescimento; Feijão; Manganês; Nodulação; Phaseolus Vulgaris; Planta; Raiz; Solo; Toxidez. |
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Thesaurus Nal: |
calcium; kidney beans; manganese; Rhizobium phaseoli; soil pH; toxicity. |
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Categoria do assunto: |
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Marc: |
LEADER 02678nam a2200457 a 4500
001 1622126
005 1997-06-30
008 1963 bl uuuu m 00u1 u #d
100 1 $aDOBEREINER, Johanna.
245 $aManganese toxicity in Rhizobium - bean symbiosis (Phaseolus vulgaris L.).
260 $aWisconsin: University of Wisconsin$c1963
300 $a135p.
490 $atese de Mestrado.
500 $aTese de Mestrado. Orientada por: O.N.Allem e I.L.Baldwin.
520 $aThe effect on manganese toxicity on the nitrogen fixing symbiosis in Phaseolus vulgaris was studied. In 4 laboratory experiments the resistence to manganese of 20 strains of Rhizobium phaseoli, growing in liquid culture medium with different H-ion concentrations, was studied. Three greenhouse experiments werw carried out to observe manganese toxicity effects on plant growth, nodulation and nitrogen fixation, at two H-ion concentrations and at three calcium levels. Rhizobium growth was affected only by manganese concentrations above 100 ppm, when the Ph of the medium was above 6.0. At pH4.6 however, 25 ppm manganese were toxic to most of the strains. Different strains varied in their sensitivity to manganese and to high H-ion concentrations but the two effects were independent of each other. plant passage in normal plants or in plants showing manganese toxicity symptoms and containing more than 1200 ppm manganese, had no effect on the ability of the strains to grow in culture medium containing high manganese concentrations. Manganese concentrations of 12.5 and 25.0 ppm on a sand weight basis reduced the total nitrogen in plants per pot by 13% when ammonium nitrate was the nitrogen source. The total nitrogen in the plant dependent on symbiotic nitrogen fixation was reduced by 30 t0 60% depending on the inoculated strain of Rhizobium phaseoli. Increasing manganese levels reduced the dry weight and nitrogen content of plants, the nodule number and size, the nodule weight and the hemoglobin and nitrogen content in......
650 $acalcium
650 $akidney beans
650 $amanganese
650 $aRhizobium phaseoli
650 $asoil pH
650 $atoxicity
650 $aAcidez
650 $aCálcio
650 $aCrescimento
650 $aFeijão
650 $aManganês
650 $aNodulação
650 $aPhaseolus Vulgaris
650 $aPlanta
650 $aRaiz
650 $aSolo
650 $aToxidez
653 $aCa
653 $aFBN
653 $aFixacao biologica de nitrogenio
653 $aGrowth
653 $aMn
653 $aNBF
653 $aNitrogen fixing bacteria
653 $aPlants
653 $aRoot nodulation
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| Registros recuperados : 1 | |
| 1. |  | PACHECO, A. R.; REIS, C. A. F.; SANTOS, A. M.; OLIVEIRA, S. M. de; QUIREZA, J. E. de C.; NICOLI, C. M. L.; MORAES, A. da C. Implantação da unidade de referência tecnológica de integração pecuária leiteira e floresta na Fazenda Santa Bárbara, em Quirinópolis, Goiás - Etapa 1. Colombo: Embrapa Florestas, 2019. 16 p. (Embrapa Florestas. Comunicado técnico, 432).| Tipo: Comunicado Técnico/Recomendações Técnicas |
| Biblioteca(s): Embrapa Arroz e Feijão; Embrapa Florestas. |
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| Registros recuperados : 1 | |
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