Caracterización morfológica yaislamiento de hongos micorrízicos arbusculares (HMA) asociados al café provenientes de plantaciones de la provincia de Loja

Abstract

Abstract: Arbuscular mycorrhizalfungi (AMF) are of considerable importance for plants. These fungi form a symbiosis with the roots of the plant, benefiting the absorptionand assimilation of nutrients. The proceeding study dealt with the morphological characterization and isolation of arbuscular mycorrhizal fungi (AMF) associated with coffee from plantations in the province of Loja. Surface soil samples collected in the areas of Malacatos, Chaguarpamba, Lozumbe and Loja were used. We proceeded with the extraction and morphological characterization of the spores and attempts were made to isolate AMF in monosporic cultures. At site 1 = canton Loja, 122 spores/50g of soil were found, and two morphotypes of Acaulospora. At site 2 = Lozumbe, 51 spores/50g of soil and three morphotypes were extracted, one possible Glomus or Rhizophagus and two of Acaulospora. At site 3 = Chaguarpamba 40 spores/50g of soil and two morphotypes of Acaulospora were found while at site 4 = Malacatos 25 spores/50 g of soil and one morphotype of Acaulospora were found. From the attempts of isolations made, it was possible to isolate one, probably of the genus Glomus or Rhizophagus.