Abstract

Effect of antifungal activity of seven species of Bauhinia against Helminthosporium oryzae, Fusarium oxysporum by spore germination method and Rhizoctonia oryzae, Aspergillus niger by agar cup method

Author(s): Arghya Ghosh, Ajoy Ghosh, Aruneema Bardhan, Padma Chatterjee

The antifungal activity of seven different species of Bauhinia namely Bauhinia acuminata L., Bauhinia variegata L., Bauhinia purpurea L., Bauhinia scandens L., Bauhinia vahlii W. and A., Bauhinia racemosa Lam, Bauhinia malabarica L. were tested against four plant pathogenic fungi like Helminthosporium oryzae, Fusarium oxysporum by spore germination method and Rhizoctonia oryzae, Aspergillus niger by agar cup method respectively. The dried plant leaves were extracted with three liters of 50% of aqueous ethanol at room temparature for seven days. The individual extract was filtered separately. Each extract was charcoalised and concentrated under reduced pressure and a dark brown residual solid was obtained in each case. The residue obtained in each case was diluted and subjected to antifungal assay for locating the antifungal properties of each species.