Abstract

It was proposed to know the genera of arbuscular mycorrhizal fungi (AMF) associated with plantations of Ochroma pyramidale (balsa) and their level of root infection. Plantations of 1; 2; 3; 4; 5.5; and 7 years (six in total) were located and analyzed, distributed in the center of the Ecuadorian Humid Tropic (EHT). In each plantation, three 500 m2 plots were delimited, where at a depth of 0-15 cm three soil samples (approximately 1 kg) and rootlets were collected to estimate the percentage of root colonization. The isolation and identification of AMF at the genus level and the estimation of mycorrhizal colonization were carried out using the sieving methodology, wet decantation with centrifugation, and It was proposed to know the genera of arbuscular mycorrhizal fungi (AMF) associated with plantations of Ochroma pyramidale (balsa) and their level of root infection. Plantations of 1; 2; 3; 4; 5.5; and 7 years (six in total) were located and analyzed, distributed in the center of the Ecuadorian Humid Tropic (EHT). In each plantation, three 500 m2 plots were delimited, where at a depth of 0-15 cm three soil samples (approximately 1 kg) and rootlets were collected to estimate the percentage of root colonization. The isolation and identification of AMF at the genus level and the estimation of mycorrhizal colonization were carried out using the sieving methodology, wet decantation with centrifugation, and It was proposed to know the genera of arbuscular mycorrhizal fungi (AMF) associated with plantations of Ochroma pyramidale (balsa) and their level of root infection. Plantations of 1; 2; 3; 4; 5.5; and 7 years (six in total) were located and analyzed, distributed in the center of the Ecuadorian Humid Tropic (EHT). In each plantation, three 500 m2 plots were delimited, where at a depth of 0-15 cm three soil samples (approximately 1 kg) and rootlets were collected to estimate the percentage of root colonization. The isolation and identification of AMF at the genus level and the estimation of mycorrhizal colonization were carried out using the sieving methodology, wet decantation with centrifugation, and