Data/hora: 22/05/2024 14:05:39

Biblioteca(s): | Embrapa Agrobiologia.
Data corrente: | 18/07/1996
Data da última atualização: | 22/06/2012
Autoria: | VLASSAK, K.
Título: | Competitive nodulation of bean (Phaseolus vulgaris L.) Rhizobium spp. with a broad host range: field studies and genetic analysis.
Ano de publicação: | 1996
Fonte/Imprenta: | Leuven: Kstholieke Universiteit Leuven, Fev. 1996.
Páginas: | 204p.
Série: | Tese de Doutorado.
Idioma: | Inglês
Notas: | Tese de Doutorado: Orientada por: J. Vanderleyden, Avilio Antonio Franco.
Conteúdo: | Inoculation of legumes with superior nitrogen fixing rhizobia does not always result in the desired increase because of the failure of the inoculation strain to occupy a significant proportion of the nodules. The introduced inoculant strains have to compete with the indiginous, often ineffective nitrogen fixing, rhizobial population at different levels: after their adaptation and multiplication  in the soil and host rhizosphere, these strains have to compete on the legume roots for infection sites and nodulation. Although the success of inoculation depends for a great extent on the ratio of inoculant to indigenous rhizobia, the intrinsic characteristics of these rhizobia, and their responses to many abiotic and biotic environmental factors also determine the outcome of inoculation. Common bean (Phaseolus vulgaris L.) is an important crop in Latin America, supplying about 20% of the protein intake per person (Van Rheenen, 1982). The factors which influence the interaction between this legume and its microsymbiont are insufficiently known, and often no response is observed after inoculation of this crop. Recently, Rhizobium spp, such as R.tropici IIB, which nodilate a wide variety of tropical legumes, were indentified. These strains maintain their good symbiotic properties, even at the adverse environmental conditions frequently encountered in tropical soils (Martinez-Romero et al., 1991; Hungria et al., 1993), and consequently, appear promising as commercial inoculant for beans. In this work, the competitive.......
Palavras-Chave: | Biological competition; Competitividade; FBN; Fixacao biologica de nitrogenio; Genetic; NBF; Nitrogen fixing bacteria; Rhizobium spp; Root nodulation.
Thesagro: | Feijão; Genética; Leucaena Leucocephala; Nodulação; Phaseolus Vulgaris; Rizosfera; Trifolium Repens.
Thesaurus Nal: | kidney beans; rhizosphere.
Categoria do assunto: | --
Registro original: | Embrapa Agrobiologia (CNPAB)
Exemplares: | CNPAB - (25479-1) - UPC - TS - -- - 1996.00042 - V867c - 1996.00042 - DIS