ResumenLa investigación tuvo como objetivo aislar el micelio secundario de Auricularia spp y Pleurotus spp procedente de tres áreas naturales de la región San Martín, así como evaluar el crecimiento en medio agar papa dextrosa y en sustratos estériles a base de residuos agroindustriales. Se obtuvieron 10 aislamientos de micelios secundarios a través de carpóforos desinfectados de Pleurotus spp y otros 10 aislamientos de carpóforos desinfectados de Auricularia spp. La mayor velocidad de crecimiento en Auricularia spp fue de 62,5 µm h -1 (A1) y de 75 µm h -1 (B10) para Pleurotus spp. En una segunda parte del experimento se produjo semilla de las cepas nativas más veloces en granos de maíz esterilizado durante un periodo de incubación de 40 días. La semilla fue inoculada en sustratos estériles a base de residuos agroindustriales. Las cepas A1 de Auricularia spp y B10 de Pleurotus spp desarrollaron mejor en sustrato a base de residuos de pulpa de café, logrando una eficiencia biológica de 30,33% y 18,20%, respectivamente. Se concluye que las cepas nativas A1 y B10 de hongos comestibles pueden ser utilizadas en la propagación de semilla y producción de hongos comestibles, brindando al agricultor una alternativa complementaria de alto valor nutritivo.Palabras clave: Auricularia spp.; Pleurotus spp.; eficiencia biológica; pulpa de café; cascarilla de arroz. AbstractThe objective of the research was to isolate the secondary mycelium of Auricularia spp and Pleurotus spp from three natural areas of the San Martín region, as well as to evaluate the growth in agar potato dextrose medium and in sterile substrates based on agro industrial residues. Ten isolates of secondary mycelia were obtained through disinfected carpophores of Pleurotus spp and another 10 isolates of disinfected carpophores of Auricularia spp. The highest growth rate in Auricularia spp was 62,5 µm h -1 (A1) and 75 µm h -1 (B10) for Pleurotus spp. In a second part of the experiment, seed of the fastest strains was produced in sterilized maize grains during a 40-day incubation period. The seed was inoculated into sterile substrates based on agro industrial residues. The native strains A1 of Auricularia spp and B10 of Pleurotus spp developed better in substrate based on coffee pulp residues, achieving a biological efficiency of 30.33% and 18.20%, respectively. It is concluded that the native strains A1 and B10 of edible fungi can be used in seed propagation and edible fungus production, providing the farmer with complementary food of high nutritional value.
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