© Global Journal Of Agricultural Sciences . 2003. Vol. 2 No. 1
Publisher: Bachudo Science Co. Ltd
Effect of Aqueous Extracts of Medicinal Plants On Growth of Fusarium Moniliforme Var Subglutinans Wollenw and Reinking
Ekanem C. Wokoma, Ifeoma A. Anaemene
KEYWORDS: Fusarium moniliforme var subglutinans, medicinal plants, aqueous extracts, in vitro growth inhibition.
ABSTRACT:The growth of Fusarium moniliforme var subglutinans Wollenw. and Reinking was evaluated in chloramphenicol potato dextrose agar (cPDA) containing 20% aqueous extracts of eight medicinal plants. Mycelia growth, was reduced in unautodaved extracts of Cassia alata. Baphia nitida, Euphorbia hirta, Vernonia amygdalina, Azadirachta indica, and Zingiber officinale, with B. nitida, V. amygdalina, and C. alata, being the most effactive. On the contrary, the unautoclaved extract of Cyathula prostrata did not affect the growth of the fungus. The antifungal activities of B nitida. A. indica, E. hirta, Z. officinale, and C. alata were affected by autoclave treatment. Unautoclaved extracts of C. alata, B. nitida, A. indica, V. amygdalina, A. cordifolia, E. hirta and Z. officinale significantly (ps;0.05) reduced the dry weight of the fungus below the control. Autoclaving the extracts affected the fungitoxic activities of C. alata, B. nitida, and V.amygdalina, on the dry weight of the fungus. Sporulation was completely inhibited in cPDA medium amended with unautoclaved extracts of C. alata, B. nitida, A. indica, V. amygdalina and Z. officinale. However all the autoclaved extracts supported sporulation of the fungus. Conidia germination in full strength (w/v, 1: 1) extracts was completely inhibited, whereas 90% of the conidia germinated in sterile deionised water after 6hr of incubation. These findings suggest the potential role of the extracts incontrolling the fungus.
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