Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Botrytis porri, causal agent of neck rot of garlic in Mérida, Venezuela.

Abstract

Botrytis porri [Botryotinia porri] was identified as the causal agent of neck rot on garlic plants grown at Mesa de Caballo, Miranda Municipality of Mérida State, Venezuela. The pathogen identity was established based on morphology and size of conidia and sclerotia produced in vitro and in situ. On a substrate prepared with oatmeal and water, the fungus formed characteristic large black cerebriform sclerotia. All inoculated garlic seedlings died within one week, whereas seedlings used for the control did not show disease symptoms. Only B. porri was isolated from inoculated seedlings. This is the first report of B. porri infecting garlic grown in Venezuela.