Effect of aqueous and n-hexane extracts of khaya ivorensis A Chev. (Meliaceae) on the control of rice seed-borne fungi.
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Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
Faculty of Agriculture University of Uyo, Akwa Ibom State, Nigeria
Abstract
Experiments were carried out to test the effect of aqueous and n-Hexane extracts of Khaya ivorensis on the control of rice
seed-borne fungi. Seed-borne fungi associated with the seeds of five rice varieties (NERICA 5, FARO 29, FARO 49, NERICA
18 and NERICA 36) were isolated using the agar plate incubation method. N-hexane and aqueous leaf extracts of Khaya
ivorensis were tested at 5% v/v and 10% v/v of the culture medium on Fusarium verticilloides, one of the most predominant
fungi, isolated from the seeds. Methanol alone applied at 5%v/v of the culture medium served as the control while
Carbendazim (a benzimidazole fungicide) applied at 1g/litre served as a check. Inhibition of mycelia growth/diameter was
recorded as a measure of the effectiveness of the extracts. The results of the experiment showed a significant reduction
(p>0.05) in the diameter of growth of the test fungus treated with the extracts compared to the control. N-hexane leaf extract
of khaya ivorensis at both concentrations performed better than the aqueous extract in reducing the growth of the test fungus
at the different days after plating studied. This portends great opportunities in the use of botanical pesticides as antimicrobial
agent in seed-borne infection
Description
Keywords
Khaya ivorensis, Fusarium verticilloides, n-Hexane leaf extract, Anti-fungal property, seed-borne infection, Rice.
Citation
8 Ahmed, O. Aliyu, T. H, Balogun, O. S., Fabiyi1, O. A & Olatunji, G. A. (2013). Effect of aqueous and n-hexane extracts of khaya ivorensis A Chev. (Meliaceae) on the control of rice seed-borne fungi. Nigerian Journal of Agriculture, Food and Environment 9(1):72-75.