Seleção de estirpes de Rhizobium tolerantes à acidez / Maria Imelda Leite dos Anjos.
Detalhes da publicação: Manaus : [s.n.], 1982Notas: 104 fAssunto(s): Rizóbio -- Tolerância à acidezClassificação Decimal de Dewey: 631.84 Nota de dissertação: Dissertação (mestre) - INPA/UFAM, 1982 Sumário: The tolerance of two strains of Rhizobium phaseali (CO5 and C-14) to acidity was evaluated by counting the number of cells and the optical density of culture medium at different levels of pH (5.0, 5.5 and 6.5).The two strains showed better growth when the pH of the medium was between 5.0 (CO5) and 5.5. (C-14). Forty-nine strains of the cowpea group were tested in relation to their tolerance al low pH in culture medium with pH 4.0, 5.0, 6.0, and 7.0, the evaluation was made by measuring the optical density of cultures. The results showed that the majority of strains exhibited higher optical density when the pH of the medium was between 6.0 and 7.0. Thirty-four of the forty-nine strains tested in acid medium, were evaluated in symbiosis with "siratro" (Macroptilium atropurpureum) cultived in nutritive solution (pH 4.0, 5.0, 6.0 and 7.0). The acidity affected the production of dry mass, nodules number nad nitrogen fixation in siratro associated with Rhizobium of cowpea group. From all the strains tested, the Arg. IV, that showed better performance under acid conditions in relation to all parameters studied.| Tipo de material | Biblioteca atual | Setor | Classificação | Situação | Previsão de devolução | Código de barras |
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Dissertação | T 631.84 A599s (Percorrer estante(Abre abaixo)) | Disponível | 00-1701 | ||
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Dissertação | T 631.84 A599s (Percorrer estante(Abre abaixo)) | Disponível | 00-1708 |
Percorrendo a Biblioteca INPA as estantes, Coleção: Dissertação Fechar navegador de prateleira (Oculta o navegador da estante)
Dissertação (mestre) - INPA/UFAM, 1982
The tolerance of two strains of Rhizobium phaseali (CO5 and C-14) to acidity was evaluated by counting the number of cells and the optical density of culture medium at different levels of pH (5.0, 5.5 and 6.5).The two strains showed better growth when the pH of the medium was between 5.0 (CO5) and 5.5. (C-14). Forty-nine strains of the cowpea group were tested in relation to their tolerance al low pH in culture medium with pH 4.0, 5.0, 6.0, and 7.0, the evaluation was made by measuring the optical density of cultures. The results showed that the majority of strains exhibited higher optical density when the pH of the medium was between 6.0 and 7.0. Thirty-four of the forty-nine strains tested in acid medium, were evaluated in symbiosis with "siratro" (Macroptilium atropurpureum) cultived in nutritive solution (pH 4.0, 5.0, 6.0 and 7.0). The acidity affected the production of dry mass, nodules number nad nitrogen fixation in siratro associated with Rhizobium of cowpea group. From all the strains tested, the Arg. IV, that showed better performance under acid conditions in relation to all parameters studied.
Área de concentração: Botânica.
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