Abstract

VALDES RODRIGUEZ, Ofelia Andrea; GARCIA ESPINOZA, Roberto; SANCHEZ SANCHEZ, Odilón  and  PEREZ VAZQUEZ, Arturo. Isolation and pathogenicity of a possible Pythium aphanidermatum in Jatropha Curcas L. non toxic. Trop. subtrop. agroecosyt [online]. 2011, vol.14, n.2, pp.649-660. ISSN 1870-0462.

A chromista, possible Pythium aphanidermatum, was isolated from severely damage seeds and seedlings recently started from Jatropha curcas L. non toxic seeds sown in the tropical area of Veracruz, Mexico. In order to study pathogenic Pythium aphanidermatum effects over pre-emergent and post-emergent stages, seeds and young seedlings were inoculated with the isolated pathogen, and the chromista showed possible pathogenic activity against pre-emergency and recently started post-emergency; however, statistically significant damaged was not found in older seedlings.

Keywords : Pythium aphanidermatum; Jatropha curcas; seedlings; pre-emergent patogenicity; post-emergent patogenicity.

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