Browsing by Author "Mahmud, H. U."

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    Comparative assessment of chlorophyll content, yield parameters and nutrients of three varieties of cowpea (Vigna unguiculata (L.) Walp)
    (Science World Journal, 2025) Olayinka B. U.; Ogungbemi, R. F.; Babatunde, M. O.; Mahmud, H. U.; Ogundare, K. O.
    Cowpea (Vigna unguiculata L.), is a vital crop in sub-Saharan Africa, that contributes significantly to nutrition, food security, and income generation. The varieties abound vary in the bio-productivity and nutritional status, hence the need to evaluate the agronomic performance and nutritional value of the three newly improved cowpea varieties (Sampea 11, Sampea 12, and Sampea 15) that are cultivated in the Northern Savanna zone of Nigeria. In this study, growth parameters chlorophyll content, and yield components were assessed. Additionally, proximate and mineral analyses which provided insights into the nutritional profiles of these varieties were also investigated. Results identified Sampea 15 as the superior variety, in terms of chlorophyll content, seed weight, protein, fat, energy value, sodium, phosphorus, zinc and manganese. These findings underline the potential of Sampea 15 to enhance food security and nutritional outcomes in West Africa, where malnutrition remains a significant challenge. Considering the superiority of Sampea 15 over all other varieties, there is a need for an agricultural extension officer to make this variety known to the farmers for cultivation in the Southern Guinea savanna ecological zone where the study was carried out.
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    Mitigating salinity stress in groundnut (Arachis hypogaea L.) Through Salicylic Acid Application
    (Biological and Environmental Sciences Journal for the Tropics, 2025) Olayinka, B. U.; Abdulbaki A. S.; Mahmud, H. U.; Muhammed, G. Y.; Akinyemi, O. C.; Ayuba, A. K.
    Soil salinity is a major abiotic stress factor that adversely affects the growth, yield, and quality of many crops, including Arachis hypogaea (groundnut). This study investigated the potential of salicylic acid (SA) in mitigating the negative effects of salinity stress in groundnut. A germination experiment was conducted on two groundnut varieties, SAMNUT-11 and SAMNUT-14, which were exposed to varying concentrations of sodium chloride (NaCl) solutions (0, 50, 100, 150, and 200 mM), with or without SA treatment. The experiment followed a completely randomized design with ten treatment combinations and three replications. The effects of SA were evaluated on morphological parameters such as germination percentage, fresh weight, and plumule length, alongside key biochemical indicators of oxidative stress, including reactive oxygen species (ROS), malondialdehyde (MDA), and reduced glutathione (GSH). Results showed that SA significantly enhanced seed germination and seedling growth under saline conditions, particularly at moderate salt concentrations (≤100 mM). In addition, SA application effectively reduced ROS and MDA levels while increasing GSH content, indicating its protective role against oxidative damage. Among the two varieties tested, SAMNUT-14 exhibited greater salt tolerance, demonstrated by superior morphological performance and more favourable biochemical responses compared to SAMNUT-11. These findings suggest that exogenous SA application can improve salt tolerance in groundnut by modulating oxidative stress responses, offering a promising approach for enhancing crop productivity in saline soils. Further research is warranted to elucidate the underlying physiological and molecular mechanisms of SA-mediated stress mitigation and to optimize its field application.