Aislamiento y selección de hongos potencialmente micorrízicos en seis especies de orquídeas nativas del cerro Abuga en la provincia del Cañar

Abstract

The fungi that form symbiotic associations with the roots are called mycorrhizae, play a very important role during their life cycle, both in their nutrition and germination of the seeds. In the present study it was analyzed microscopically and illustrated the characteristics of basidiomas of potentially mycorrhizal fungi of orchids. In order to carry out this work, different root fragments of 6 species of orchids native to Ecuador were collected in the Abuga Hill located in the Bayas,Azogues city parish in the Province of Cañar. From each species 60 root fragments were seeded in FIM medium, giving a total of 360 seeded fragments. 124 viable colonies were isolated in PDA medium, of which 14 colonies presented characteristics similar to the genus Rhizoctonia, the rest of the colonies presented characteristics belonging to pathogenic fungi and saprophytes. The colonies of interest were isolated from Trichocerosantennifer, Elleanthusamethystinoides, Stelissp, Epidendrumchioneum, Pleurothallislinguifera and Epidendrum sp.