ANTIFUNGAL ACTIVITY OF RHIZOPHORA APICULATA AGAINST ALTERNARIA SOLANI.

The present investigation was undertaken to assess the antifungal activity of different solvent extract of Rhizophora apiculata against A. solani and evaluation of its antimicrobial compounds. The experiment clearly revealed that all the solvent extracts of R. apiculata (15%) considerably inhibited the growth of test pathogenwhen compared to control. The minimum mycelial growth (3.65mm) was recorded with methanol extract which accounted for the highest percent inhibition (95.54%) over control. This was followed by aqueous extract, ethanol extract and chloroform extract of R. apiculata (15%) accounting 94.47, 92.28 and 89.94 percent inhibition. The standard chemical fungicide Mancozeb 75% WP at 0.25% conc. showed 100 percent inhibition of the test pathogen. Also, 13-Docosenamide, (Z)-, -13-Docosenamide, 9-Octadecenamide, (Z)-was recorded highest peak area with 36.86% with retention time (RT) 25.14 min. ç-Sitosterol, á-Sitosterol, Cholest-8(14)-en-3-ol, 4,4-dimethyl-, (3á,5à) was identified as most abundant compounds of R. annamalayna with 3.31 % peak area with highest retention time (RT) 33.33 min under GC-MS analysis. [ABSTRACT FROM AUTHOR]