Abstract

ANTIFUNGAL ACTIVITY OF CATHARANTHUS ROSEUS (L.) G. DON. AGAINST ALTERNARIA TENUIS

*Laxman R. Rathod and Dhananjay N. Kokil

Abstract

The present study was carried out to screen the antifungal activity of Catharanthus roseus (L.) G. Don., against Alternaria tenuis. The plants showed clear antifungal activity and suppressed the mycelial growth of test fungi. The leaf extract of Catharanthus roseus was used against Alternaria tenuis to study the effect on linear growth. It was found that as the concentration of Catharanthus roseus increases, there was decrease in linear growth of fungus. At the same time, the maximum inhibition of Alternaria tenuis was occurred at 8.0% concentration. At the different concentration ranging from 2.0% to 8.0%, the linear growths of Alternaria tenuis on the 8th day obtained were 50, 45, 35 and 14 mm respectively. The selected plants can be used for the management of plant diseases caused by seed-borne fungi.

Keywords: Seed health testing methods, Alternaria tenuis, Catharanthus roseus and food Poisoning technique.