Data/hora: 23/09/2024 21:56:47

Biblioteca(s): 	Embrapa Agrobiologia; Embrapa Soja.	
Data corrente: 	18/04/1994	
Data da última atualização: 	27/05/2019	
Autoria: 	HUNGRIA, M.; FRANCO, A. A.; SPRENT, J. I.	
Afiliação: 	EMBRAPA-CNPSo, Cx. Postal 1061, CEP 86001-970, Londrina, PR.	
Título: 	New sources of high-temperature tolerant rhizobia for Phaseolus vulgaris L.	
Ano de publicação: 	1993	
Fonte/Imprenta: 	Plant and Soil, v.149, p.103-109, 1993.	
Idioma: 	Inglês
Português	
Conteúdo: 	Common bean (Phaseolus vulgaris L.) represents an important crop in tropics, but previous screenings of Rhizobium leguminosarum  bv. phaseoli did not show strains that could fix N2 im symbiosis with bean at temperatures higher than 35o.C (Hungria and Franco, 1993). However, there are other rhizobia and bradyrhizobia species that nodulate some tropical leguminous tress and can fix N2 at high temperatures.In a trial of rhizobial strains isolated from leguminous trees, we found that 14 out of 21 isolates from Gliricidia. Lonchocarpus and Leucaena were also able to nodulate common beans at optimal temperatures (28/23o.C. day/night). When we exposed beans inoculated with these strains to high temperature conditions, 40oC/8h/day, some of them accumulated at flowering time as much or more N as bean plants receiving mineral N. These broad host-range sources of rhizobia capable of fixing nitrogen with bean at high temperature seem to have the potential to improve yields in tropical soils.	
Palavras-Chave: 	Common beans.	
Thesagro: 	Gliricidia; Leucaena; Lonchocarpus; Nitrogenase.	
Thesaurus Nal: 	nitrogen fixation.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Soja (CNPSO)	
Exemplares: 	CNPSO - (13822-1) - UPC - SP - -- - 10399 -  - 10399 - DIS
CNPAB - (21346-1) - ADC - SP - -- -  -  - 19224 - DIS