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Pastos y Forrajes
versión impresa ISSN 0864-0394versión On-line ISSN 2078-8452
Resumen
CORRALES-LOZADA, Marbil; LUMBRES, Victoria; IGLESIAS-OSORES, Sebastian y CARRENO-FARFAN, Carmen. Potentialities of plant growth promoting bacteria, isolated from Portulaca oleracea L. in soils with salinity. Pastos y Forrajes [online]. 2020, vol.43, n.2, pp.93-101. ISSN 0864-0394.
Objective
To determine the potential of rhizospheric and endophytic bacteria of Portulaca oleracea L. as growth promoters in soils with salinity.
Materials and Methods
Fifty four purslane plants were collected, from the Reque y Humedales de Eten district, in the Lambayeque region, Peru. From them isolations were made of rhizospheric and endophytic nitrogen-fixing bacteria. They were phenotypically identified, the ammonium, soluble phosphorus and indoles produced were quantified and the tolerance to 10 % NaCl was studied.
Results
The rhizospheric bacteria Azospirillum (23,1 %), Azotobacter (18,2 %), Herbaspirillum (15,85 %), Beijerinckia (12,2 %), Burkholderia (9,1 %), Derxia (6,01 %) and Gluconacetobacter (4,2 %) and the endophytic bacteria Azospirillum (43,3 %), Herbaspirillum (16,8 %), Burkholderia (14,4 %) and Gluconacetobacter (12,0 %) were isolated and identified.
Conclusions
The rhizospheric and endophytic bacteria of P. oleracea have as characteristics that they are nitrogen fixers, phosphate solubilizers, indole producers and tolerant to 10 % NaCl.
Palabras clave : PGPR; rhizospheric bacteria; plant growth promoters.
