In vitro inhibitory effect of plant extracts on growth of seed-borne Alternaria alternata fungs

Abstract

Antifungal substances of plant origin could be used as an inhibitor to control fungal seed diseases growth and development. The purpose of this study was to evaluate the influence of alcoholic and aqueous extracts of few medicinal plants (Fennel, Cichorium, Asafoetida, Echinacea, Balangu (Lady’s mantle and Olender) on growth and development of Alternaria alternata fungi. The experimental treatments were arranged as factorial and the data were analyzed based on a completely randomized design with three replications. The effect of seed and plant extracts, plant type (plant), and their interactions were significant on the fungal growth and development. The strong antifungal properties of aqueous and alcoholic extracts of balangu and oleander showed a broad-spectrum natural antifungal resistance in those plants. However, the results indicated a high resistance for A. alternata against the aqueous extract of fennel. This study concluded a high potential for the alcoholic extract of balangu and oleander (100% inhibition) in the biological control of the A. alternata fungus.

Keywords

• biological seed treatment
• extract
• medicinal plant
• seed born