Inaugural lectures

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Browsing Inaugural lectures by Author "Oloyede, F. A."

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    Chemical Composition of a Tropical Fern Ceratoptelus Cornlita (Parkeriaceae, Pteridophyta) in Nigeria
    (2010) Oloyede, F. A.; Oloyede, F. M.; Saliu, T. L.; Ogunwole, A. A.
    Extracts from some fern species have been found to be useful in fortifying livestock and fish feeds to enhance production especially in peasant communities. The chemical composition of Ceratoptc.ris cornzltn has not been documented insNigeria. This study was thus designed to determine its suitability for use in fortifying fish feed by analysing the nutrient and anti-nutrient contents of its dimorphic fronds separately. One kg of sterile and fertile fronds of C.cornuta were collected, washed using distilled water and oven dried at 40 OC for about 96 hours. The dried samples were milled and analysed for proximate minerals, cyanide and oxalate analyses in triplicates. Results of the nutrient and anti-nutrient analyses show that both the sterile and the fertile fronds of C. cornuta can be used in aquaculture. The crude protein (4.22-5.28 g/100 g), moisture (87-91.00 g/100 g), carbohydrate (3.12-7.40 g/100 g), magnesium (23.55-194.65 mg/100 g), calcium (0.03 mg/100 g), potassium (0.17 mg/100 g), sodium (0.17 mg/100 g), silver (50.0 mg/100 g), cobalt (3.75-4.45 mg/100 g), lead (53.5-172.5 mg/100 g), copper (60.45-61.0 mg/100 g), manganese (15.65 mg/100 g), arsenium (50 mg/100 g), cadmium (3.75-4.50 rng/100 g), iron (430.00-537.45 mg/100 g) and selenium (106.83-195.45 mg(100 g) contents are considerably high. The anti-nutritional oxalate (0.861.38 mg/100 g) and cyanide (0.88-1.16 mg/100 g) are low and fall within the safe and acceptable limits as recommended by the World Health Organisation. Thus, extract from these fronds can be incorporated into livestocks and fish meals.
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    Comparative Foliar Anatomical And Morphological Studies of Nephrolepis Biserrata (Swartz) Scott And N. Undulata ( Swartz) J.SM. in Nigeria
    (Kwame Nkrumah University of Science and Technology (KNUST), 2011) Oloyede, F. A.; Akomolafe, F. G.; Oladipo, O . T.
    The foliar anatomy and morphology of Nephrolepis biserrata and Nephrolepis undulata were investigated. The aim of which is to elucidate their taxonomic knowledge with the use of both foliar anatomical and morphological characteristics that exist between them. The anatomical studies carried out include shape and size of the epidermal cell, venation patterns, stomata type and distribution. One way analysis of variance was used to show whether the two taxa are significantly different. The results of anatomical similarities in the adaxial surfaces of their leaflets were sinuous, anticlinal walls, absence of stomata and trichome, epidennal cells are irregular in shape and variable in sizes. On their abaxial surfaces, epidermal cells are irregular in shapes and variable in sizes, stomata present, predominantly diacytic and anomocytic types with elliptic shapes, thin and wavy anticlinal wall. Anatomical differences include length and width of epidermal cells, absence or presence and distribution of crystal sands, thickness of anticlinal walls on the adaxial surfaces, stomata Index and frequency, length and breadth of guard cell and guard cell area. The venation patterns showed that the mid-rib is sheathed with parenchyma cells and trichome types were observed in N. biserrata but absent in N. undulata. The distinguishing characters of the two taxa studied are of taxonomic value and can be used to identify and delimit each species and thus widen the scope of their taxonomic knowledge.