Resumen

SISTERNA, Marina  y  MINHOT, David. The genus Marielliottia (Hyphomycetes, Ascomycota): a new taxon associated with wheat grain mycoflora in Argentina. Bol. Soc. Argent. Bot. [online]. 2006, vol.41, n.3-4, pp.177-182. ISSN 1851-2372.

For the first time, the genus Marielliottia is registered on wheat grains in Argentina. This fungus was isolated from seed samples from trials conducted at the Estación Experimental Julio Hirschhorn (Los Hornos, Buenos Aires). The seeds were plated on potato dextrose agar (PDA) and incubated at 21±1°C; HR 80% under fluorescent lamps supplemented with UV light during 12 h photoperiod. Evaluation was performed for the presence of fungi at 5 and 8 days with the aid of a stereoscopic microscope. For taxonomic identification, the micromorphology and cultures features were examined. As a result of this study, Marielliottia biseptata was determined and inoculations with spore suspension on seeds were carried out. A description, illustrations, antecedents and importance of the treated fungus are presented.

Palabras clave : Blackpoint; Kernel discoloration; Marielliottia biseptata; Seed health; Common wheat; Triticum aestivum.

        · resumen en Español     · texto en Español     · Español ( pdf )