Browsing by Author "Mustapha, O.T."

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    Effects of Sodium Azide and Nitrous Acid on the Morphology and Leaf Anatomy of Jatropha curcas L. (Euphorbiaceae)
    (The Society for the Conservation of Phytofuels and Sciences, Nigeria., 2013-09) AbdulRahaman, A.A.; Afolabi, A.A.; Olayinka, B.U.; Mustapha, O.T.; Abdulkareem, K.A.; Oladele, F.A.
    Morphological and anatomical effects of two chemomutagens namely sodium azide and nitrous acid were studied on Jatropha curcas. Seeds were soaked in the two mutagens at various concentrations (1mM, 2mM, 3mM and 4mM) for 4 hours and later rinsed in the distilled water to remove excess mutagens. The seeds were later air dried and planted in plastic pots for observations for 12 weeks. Results shown increase in the seedling height, number of leaves, high frequency of paracytic stomata, higher stomatal index and density on the abaxial leaf surface and large stomata in seedlings induced with sodium azide (1mMNaN3 and 2mMNaN3). Also nitrous acid along with the sodium azide enhanced higher stomatal index and density, and large stomata. The effects of sodium azide especially 1mMNaN3 and 2mMNaN3 induced beneficial traits in morphology and anatomy of J. curcas than nitrous acid.
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    Evaluation of growth and yield of different varieties of cowpea [Vigna unguiculata (L.) Walp.] in Southern Guinea Savannah
    (Department of Science Education, Federal University of Technology, Minna, Minna, Nigeria, 2012-08) Abdulkareem, K.A; Mustapha, O.T.
    Eleven early maturing varieties of cowpea obtained from IITA Ibadan were planted in a randomized complete block design with three replications in the Biological garden of the University of Ilorin permanent site .Growth and yield parameters such as number of leaves per plant, plant height at maturity, number of days to 50% flowering , days to pod maturity and grain yield were evaluated. The result showed that IT 98K-131-2 produced highest number of leaves and this could be recommended as fodder for livestock while IT 97K-499-35 was found to have the highest yield in terms of seeds as compared to other varieties after the evaluation of growth and yield parameters. Variety IT 00K-961-5 had the tallest height at maturity while variety IT 98K-205-8 had the least height .Most of the varieties flowered between 40-42 days after planting. Early maturing varieties took between 60-70 days to mature.