CE: 12115 CF: cag074162099
RESEARCH ARTICLE
Response of Phaseolus vulgaris cv. Mantequilla inoculation of Rhizobium strains native to Ecuador in greenhouse
Respuesta en casa de cultivo de Phaseolus vulgaris cv. Mantequilla a la inoculación de cepas de Rhizobium nativas de Ecuador
Klever Iván Granda Mora1, María Caridad Nápoles García2, Ángel Rolando Robles Carrión1, Yelenys Alvarado-Capó3 y Roldán Torres Gutiérrez1
1Centro de Biotecnología, Universidad Nacional de Loja. Av. Pío Jaramillo Alvarado S/N. La Argelia. Loja, Ecuador, Casilla Letra “S”.
2Departamento de Fisiología y Bioquímica Vegetal, Instituto Nacional de Ciencias Agrícolas. Gaveta Postal 1, San José de las Lajas, Mayabeque. Cuba, CP 32700.
3Instituto de Biotecnología de las Plantas. Universidad “Marta Abreu” de Las Villas. Carretera a Camajuani km 5.5. Santa Clara, Villa Clara, Cuba. CP 54 830.
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ABSTRACT
The development of biofertilizers based on Rhizobium strains for common bean (Phaseolus vulgaris L.) requires studies about bacterial interaction with target cultivars. For these reason, the aim of this paper was to determine the effect of the inoculation of Rhizobium native strains, isolated from southern Ecuador, on P. vulgaris cultivar Mantequilla. An assay was performed in greenhouse. It were evaluated the parameters of nodulation, biomass, nitrogen fixation and efficiency of the symbiosis. All inoculated strains were able to nodulate bean seedlings. The total number of nodules, nodular biomass and plant biomass, were favourably affected by inoculation of Rhizobium strains. The best results were obtained with R. mesoamericanum NAM1, R. leguminosarum COL 6 and R. etli PIN 1 strains. The experimental evidences shows the potential of native strains of Rhizobium for it use as biofertilizers because they are able to raise the rates of nitrogen fixation in common bean in southern Ecuador.
