Effectiveness of Anonidium mannii seed extracts against Colletotrichum lindemuthianum and Fusarium solani, agents responsible for anthracnose and fusariose of common beans (Phaseolus vulgaris L.) in the Centre region-Cameroon

Anthracnose and Fusariose of beans caused by Colletotrichum lindemuthianum Fusarium solani respectively are two dreaded diseases that can lead to yield losses 30 100% in the field. The present study was carried out evaluate antifungal activities seed extracts Anonidium mannii (Annonaceae) on vitro growth C. F. solani. Extracts A. seeds obtained from acetone, water methanol solvents, were used for phytochemical screening preparation solutions with concentrations 12.5, 25 50 µl/ml. To radial growth, explants 0.7 cm diameter each strains They placed at centre sterile Petri dishes containing PDA medium supplemented different incubated 23°C 6 days. results revealed presence alkaloids, phenols, saponins this depended solvent used. minimum inhibitory (MIC50 MIC90) also calculated. At a concentration 50µl/ml each, acetone extract inhibited strain 2 (2.33 cm) more than (3.26 six days incubation. Similarly, strongly (1.98 cm). MIC50 aqueous gave 27.38 µl/ml 32.24 lindemuthianum. Due their power, after purification bioactive compounds, aqueous, could be as synthetic fungicides control anthracnose fusariose common bean.