Resumen

HERRERA-PARRA, E.; RAMOS-ZAPATA, J.; BASTO-POOL, C.  y  CRISTOBAL-ALEJO, J.. Sweet pepper (Capsicum annuum) response to the inoculation of native arbuscular mycorrhizal fungi and the parasitism of root-knot Meloidogyne incognita. Revista bio ciencias [online]. 2021, vol.8, e982.  Epub 04-Oct-2021. ISSN 2007-3380.  https://doi.org/10.15741/revbio.08.e982.

Under greenhouse conditions, two experiments were established with the main goal of estimating the effect of three native species of arbuscular mycorrhizal fungi (AMF), in the initial growth, 47 days after the sowing of sweet pepper (Capsicum annuum), and in the biocontrol at 50 days after inoculation of M. incognita. In both experiments, five treatments were included: three consisting for each species of AMF: T1 = Funneliformis geosporum, T2 = Claroideoglomus claroideum, and T3 = Glomus ambisporum, with the incorporation of 50 % chemical fertilization, T4 = 100 % chemical fertilization, and T5 = a control (only water, without AMF and fertilization). In the second experiment, in addition to the three treatments with AMF, one with a chemical nematicide and the other without chemical nematicide and AMF were included. The treatments were established in a completely randomized experimental design. At 47 days after planting, G. ambisporum promoted significant growth (p ≤ 0.01) of the seedlings at height (20.50 %), dry aerial biomass (30.43 %), and fresh root weight (24.7 %) concerning 100 % chemical fertilization. The mycorrhizal colonization was high (96.97-100 %). At 50 days after the inoculation of the nematode F. geosporum and G. ambisporum significantly reduced (p ≤ 0.01) the index of galling to 79.65 %. The effect of the nematicide to reduce the reproduction of the nematode was tantamount (p ≤ 0.01) to that achieved with F. geosporum and G. ambisporum, with reductions in egg production of 89 % and females formation of 69.73 %. The fungal species favored plant growth; these species are a potential microbial resource for the biocontrol of M. incognita.

Palabras llave : Capsicum annuum; M. incognita; arbuscular mycorrhizal fungus.

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