Resumen

CRESPO AVILA, Jorge Abel et al. PGPR antagonistic activity in plant parasitic nematode Pratylenchus spp. in Musa paradisiaca (Musa acuminata × M. balbisiana) vc cavendish. Rev. Inv. Cs. Agro. y Vet. [online]. 2024, vol.8, n.24, pp.717-728.  Epub 20-Sep-2024. ISSN 2664-0902.  https://doi.org/10.33996/revistaalfa.v8i24.297.

The excessive use of nematicides for the control of Pratylenchus spp. in banana crops has an impact on the reduction of beneficial microorganisms in the soil. The objective was to evaluate the antagonistic activity of Plant Growth Promoting Rhizobacteria (PGPR) in the control of Pratylenchus spp. The study was developed in areas of the Biotechnology Department of the State Technical University of Quevedo, Ecuador. A completely randomized experimental design was applied with five treatments, three consortia of rhizobacteria and two controls (chemical and without application). Morphological and physiological variables were evaluated in the plants, in addition to the number of nematodes in soil and roots. The results showed that the combination of strains (Acinetobacter, Serratia, Pseudomonas) had a higher root weight and length (164.7 g and 48.7 cm), in addition to the functional root content, a higher chlorophyll content and a reduction of the nematode population in roots and soil by more than 50%. Therefore, PGPR constitute an effective biological alternative for the control of phytonematodes.

Palabras clave : Rhizobacteria antagonism; Bacterial consortium, Beneficial soil microorganisms; Musaceae; Phytonematodes; Sustainability.

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