Browsing by Author "Balogun, O. S"

Now showing 1 - 3 of 3
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    Effect of Pre- and Post- germination treatment of soybean (Glycine max L.) with aqueous extract of Moringa oleifera stem bark on fungal infection
    (International Moringa and Nutraceutical Research Society., 2014) Aliyu, T. H; Balogun, O. S; Onuegbu, L. C; Ahmed, Oladimeji
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    Pathogenicity and cell-wall degrading enzyme activities of some fungal isolates from cowpea (Vigna unguiculata (L) Walp)
    (Nigerian Society for Experimental Biology, 2006) Oluyemisi, B. Fawole; Ahmed, O; Balogun, O. S
    Nine fungal species isolated from cowpea seeds were used as inocula on four cowpea varieties commonly distributed to farmers in Ilorin, Kwara state, Nigeria by the National Seed Service, a subsidiary of the Federal Ministry of Agriculture and Natural Resources. The effects of fungi on germinability and seedling health were determined using seedling symptom test. Two of the virulent species were screened for the production of cell wall degrading enzymes using viscometric method. All the fungi reduced germination rate in all the cowpea varieties and different types of seedling symptoms were noted for the fungi. The symptoms included seed rot, chlorotic leaf development, stunted growth etc. Production of pectinases and cellulases by Aspergillus flavus check for this species in other resources and Penicillum check for this species in other resources sp. was observed and the virulence of the two organisms could be attributed to the activities of these cell wall degrading enzymes.
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    PATHOGENICITY OF SEED-BORNE FUNGI ON SOYBEAN (GLYCINE MAX (L.) MERRIL) IN NIGERIA
    (Federal University of Technology Akure Ondo State, 2018-04) Ahmed, Oladimeji; Balogun, O. S; Abolarinwa, Maryam; Adebola, Lateef
    Soybean provides an inexpensive and high quality source of protein worldwide as compared to animal protein but its production is constrained mainly by diseases which include the seed-borne diseases. Five seed-borne fungi isolated from fifteen soybean cultivars grown in the Guinea Savannah agro-ecology of Nigeria were evaluated for their pathogenicity on soybean cultivar TGX 1448-2E. The effect of the fungi was determined on seed viability, seedling biomass and plant morphology using the seedling symptom method. Translocation of the fungi in the seedlings was also determined. All the fungi reduced seed viability, mean root and shoot weight and seedling height significantly (p<0.05) with Phomopsis sp. being the most virulent. The result also showed that translocation of the fungi decreased from the root towards the upper part of the plant. The number of plants that showed symptoms of postemergence damping off and stunting in response to inoculation with the different fungi and those with no symptom (normal seedlings) also differed significantly (p<0.05). Implications of the fungi on healthy growth of soybean are discussed.