Global Journal of Science Frontier Research, D: Agriculture and Veterinary, Volume 22 Issue 1

Figure 3: Photomicrographs of dark septate fungal structures on roots of forage species. (A: Clover; B: Barley; C: Rye; D: Oats; E: Buffel Grass and F: Gatton Panic). (m: Microsclerosia; h: hypha). (Magnification: 40x). In all the plants studied, their roots were simultaneously colonized by both endophytes, MVA and ESO hyphae, also detecting the presence of vesicles, arbuscules typical of VA mycorrhizae, and ESO microsclerotia. This was also observed in other plants including ferns, mono, and dicots that are simultaneously colonized by MVA and ESO. (Urcelay et al ., 2005; Lugo et al ., 2011; Lizárraga et al ., 2015; Di Barbaro et al ., 2017). Therefore, MVA and other fungal structures developed in all the forage species studied. This coincidence could be due to the fact that all these crops were carried out in contiguous lots with identical soil characteristics and environmental conditions, and because the fungal colonization developed from the native microflora, with the ability to associate and generate MVA, which is consistent with what expressed by Aguilar -Ulloa et al. (2016) where they explain that the same fungus can colonize different plant species to generate symbiosis. These mycorrhizal-forming fungi can be considered as potential constituents of biofertilizers. Diaz Franco et al. (2019) achieved the reduction of inorganic fertilization through the inoculation of FAM in the sorghum crop. The higher yield of sorghum obtained allows considering the inclusion of FAM as a viable practice that guarantees greater profitability, as well as the agroecological conservation of production systems. IV. C onclusion The association of mycorrhizae in six forage species cultivated in the Central Valley of Catamarca and the co-occurrence of vesicular-arbuscular mycorrhizae and native dark septate endophytes is described. High levels of mycorrhizal colonization were obtained in all the evaluated forage species. The suitability of Melilotus officinalis as a trap species is highlighted as it is easily colonized by mycorrhizal fungi and generates rapid mycorrhizal growth. R eferences R éférences R eferencias 1. Aguilar-Ulloa W., Arce-Acuña P., Galiano-Murillo F., Torres-Cruz T. 2016. Aislamiento de esporas y evaluación de métodos de inoculación en la producción de micorrizas en cultivos trampa. Tecnología en Marcha . Edición Especial Biocontrol.: 5-14. 2. Barea JM. 1997. Mycorrhiza/bacteria interactions on plant growth promotion. En: Ogoshi A, Kobayashi I, Native Mycorrhizh-Forming Fungi Associated with Cultivated Forage Plants in the Central Valley of Catamarca, Argentina 1 Year 2022 5 © 2022 Global Journals Global Journal of Science Frontier Research Volume XXII Issue ersion I VI ( D )