African Journal of Biotechnology
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African Journal of Biotechnology Vol. 4 (9), pp. 996-1000, September 2005
Inhibition
of conidial germination and mycelial growth of Corynespora
cassiicola (Berk and Curt) of rubber (Hevea brasiliensis
muell. Arg.) using extracts of some plants N.
Ogbebor1 and A.T. Adekunle2* 1Plant
Pathology/ MCB. Division, Rubber Research Institute of Nigeria, P. M. B.
1049, Benin City, Nigeria. 2Department
of Crop Science, Faculty of Agriculture, University of Benin, P.M.B. 1154,
Benin City, Nigeria.
*Corresponding Author’s E- mail: adefunke2@yahoo.com. Tel: 234-802
3444139, 234-803 4160440. Accepted 1
July, 2005
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| Abstract | |||||
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Twenty-one plants were screened for fungicidal effects on conidial germination and mycelial growth of Corynespora cassiicola. Out of this, 5 plants (Ageratum conyzoides, Centrosema pubescene, Emilia coccinea, Ocimum basilicum and Solanum torvum) were selected for evaluation of concentration effects. Treatment in O. basilicum resulted in the lowest mycelial growth at 100% extract concentration. An in vivo evaluation showed that treatment with 100% O. basilicum resulted in disease index (D.I) of 43% which was significantly lower than the control 65% D.I at 5% level of probability.
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