Abstract

LEYVA-MIR, Santos Gerardo et al. Fungal diversity in oat seeds from the Central Valley of Mexico. Rev. Mex. Cienc. Agríc [online]. 2014, vol.5, n.spe8, pp.1379-1385. ISSN 2007-0934.

The aim of this study was to determine the diversity and incidence of fungal pathogens and saprophytes present in oat seed (Avena sativa L.) obtained from Ágata, Chihuahua and Turquesa cultivars, in nine localities in the central valley of Mexico during the spring-summer 2009 and 2010 crop cycles. Through the Freezing-blotter test, the following species of plant pathogenic fungi were obtained: Alternaria alternarina, A. cerealis, A. uredinis, Bipolaris hawaiiensis, B. sorokiniana, B. spicifera, B. victoriae, Diplodia sp., Drechslera avenacea, Fusarium avenaceum, F. oxysporum, F. poae, F. verticillioides, Phoma sp. and Rhizoctonia solani. While, the saprophytic fungi found were: Alternaria alternata, Aspergillus niger, Cladosporium sp., Chaetomium sp., Coniothyrium sp., Epicoccum sp., Gonatobotrys sp., Graphium sp., Nigrospora sp., Stemphylium sp. and Torula sp. The overall fungal incidence was higher in the Chihuahua variety, followed by Ágata and Turquesa. In general, seeds from the 2009 cycle showed a higher fungal incidence.

Keywords : Avena sativa; Alternaria; Bipolaris; Diplodia; Drechslera; Fusarium; Phoma.