Abstract

SARUBBI O, Humberto J.. Report of Uredinal and Ustilaginal Mycology in fodder poaceae in Paraguay. Investig. Agrar. [online]. 2014, vol.16, n.2, pp.124-128. ISSN 2305-0683.

Rusts and smuts are very important plant parasitic fungi in various crops. Several species that affect economically important forage species and are used for animal feed are reported globally. As Paraguay's livestock production is based on pastures, it is extremely important to know the pathogens that may affect the quality of grasses biomass and seed. This research presents major species of the micobiota Ustilaginal and Uredinal observed on forage grasses in the Paraguayan territory. Collections were made during the 4 seasons of 2013, different grass species in pastures of the departments of Alto Paraná, Caaguazú, San Pedro and Central (Eastern Region) and Villa Hayes and Boquerón (Western Region). Symptomatic description was made in plants, location and characteristics of uredia and telios, as well as the morphology and spore types found in different grass species. The uredinals fungi found were Puccinia levis in Urochloa brizantha, Puccinia oahuensis in Digitaria eriantha, Uromyces setariae-italicae in Urochloa humidicola and ustilaginal fungus Tilletia ayresii in Panicum maximum cv. Colonial and P. maximum cv. Gatton panic.

Keywords : Puccinia levis; Puccinia oahuensis; Uromyces setariae-italicae,; Tilletia ayresii,; pasture; fodder poaceae..

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