Pathogenicity and Control of Phomopsis sp. Associated with Yam Rot Using Bark Extracts of Mangifera indica L. and Parinari polyandra Benth
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Date
2017
Journal Title
Journal ISSN
Volume Title
Publisher
Faculty of Natural Sciences Al-Hikmah University, Nigeria
Abstract
Abstract
Revised: March 4, 2017;
Accepted: April 8, 2017
The antifungal property of Mangifera indica and Parinari polyandra bark extracts against Phomopsis sp. isolated from
rotting yam tubers was evaluated. Stock solutions prepared by dissolving 1 g of each extract in 100 ml of sterile water (i.e.
1% w/v) was applied at 1:2, 1:4 and 1:6 (i.e. 1 part of the stock to 2, 4 and 6 parts of the culture medium v/v) in-vitro. The
extracts were later applied at 0.5%, 1% and 1.5% w/v as coating on the yam tubers. The plant extracts significantly
suppressed the growth of the fungus in vitro and reduced rot development in healthy yam tubers. The percentage inhibition of
growth of the test fungus on medium treated with Parinari polyandra bark extract ranged between 10.50 – 21.35 , 19.52 –
43.15 , 29.41 – 50.14 , 33.18 – 51.92 and 27.71 – 47.30 for concentration range between 1:6v/v – 1:2v/v of the stock solution
at days 3 , 5 , 7 , 9 and 11 of plating respectively. Percentage inhibition of growth of the fungus on Mangifera indica extract
treated medium also ranged between 11.02 – 39.06, 34.93 – 49.32, 34.45 – 52.94, 38.37 – 54.18 and 31.88 – 50.42 for the
same concentration range and days after plating respectively. The study showed the potentials of these plant extracts in the
control of post harvest rots of yam tubers.
Description
Keywords
Yam rot fungus, Solvent extracts, Botanicals, in-vitro test, Pathogenicity
Citation
3 Ahmed, O., Baba, H. S, Yusuf, S. Y., Lawal R. A., Adebayo, O. V. & Ojomu J. O. (2017): Pathogenicity and Control of Phomopsis sp. Associated with Yam Rot Using Bark Extracts of Mangifera indica L. and Parinari polyandra Benth. Al-Hikmah Journal of Pure and Applied Sciences 4: 23 – 30. Published by the Faculty of Natural Sciences Al-Hikmah University, Nigeria