Data/hora: 09/06/2024 11:25:36

Biblioteca(s): | Embrapa Mandioca e Fruticultura; Embrapa Tabuleiros Costeiros.
Data corrente: | 24/05/1993
Data da última atualização: | 20/08/1998
Autoria: | AMES, R. N.; THIAGARAJAN, T. R.; AHMAD, M. H.; McLAUGHLIN, W. A.
Título: | Co-selection of compatible rhizobia and vesicular-arbuscular mycorrhizal fungi for cowpea in sterilized and non-sterilized soils.
Ano de publicação: | 1991
Fonte/Imprenta: | Biology and Fertility of Soil, v.12, p.112-116, 1991.
Idioma: | Inglês
Conteúdo: | We selected two isolates of Rhizobium for cowpea (Vigna unguiculata) with sterilized soil tests and two different isolates by non-sterilized soil testing. The four rhizobia were then paired individually with either Glomus pallidum, Glomus aggregatum, or Sclerocystis microcarpa in separate, sterilized, or non-sterilized soil experiments. The purpose of the experiments was to determine the effect of soil sterilization on the selection of effective cowpea rhizobia, and to see whether these rhizobia differed in their effects on cowpea growth when paired with various vesicular-arbuscular mycorrhizal (VAN) fungi. Our experiments showed that rhizobia selected in sterilized soil tests produced few growh responses in the cowpea compared to the other introduced rhizobia, irrespetive of pairing with VAM fungi in sterilized or non-sterilized soi. In contrast, the two rhizobia initially selected by non-sterilized soil, especialy when paired with G. pallidum. Our results suggest that it is important to select for effective rhizobia in non-sterilized soil, and that pairing these rhizobia with specific, coselected VAM fungi can significantly improve the legume growth response.
Palavras-Chave: | Co-selection; Cowpea; Effective cowpea rhizobia; Fungo micorrizico; Glomus pallidum; Sclerocystis microcarpa.
Thesagro: | Esterilização; Glomus Aggregatum; Solo; Vigna Unguiculata.
Thesaurus Nal: | mycorrhizal fungi; soil sterilization; vesicular arbuscular mycorrhizae.
Categoria do assunto: | --
Registro original: | Embrapa Tabuleiros Costeiros (CPATC)

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CPATC - (16866-1) - ADD - SP - -- -  -  - SP004271 - DIS
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