Browsing by Author "Abdulbaki, A. S."

Now showing 1 - 6 of 6
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    Comparative growth analysis, yield and quality of two cowpea (Vigna unguicullata L. (Walp.)) lines propagated by seed and stem cuttings
    (Acta. Agricuturae Slovenica, 2019) Olayinka, B. U.; Akinwunmi, M. A.; Hammed, A.; Abdulbaki, A. S.; Yahya, A.; Etejere, E. O.
    In the present study, a field experiment was carried out to evaluate and compare the effects of seed planting and stem cutting method of propagation on two cowpea lines (IT07K-243-1-2 and IT07K-298-15). Data assessed were subjected to student t-test to test for the significant effect of the two methods at p < 0.05. Results showed that growth characters such as plant height, number of leaves, leaf area, above-ground dry mass, leaf area index, leaf area ratio, relative growth rate, net assimilation rate and crop growth rate were significantly enhanced in seed propagation method compared to stem cutting. The yield components such as number of matured pods per plant, pod mass per plant, pod length, pod circumference, pod filling, hundred (100) seed mass, seed mass per plant, average number of seed per pod, harvest index and pod yield per metre square followed similar pattern as recorded for growth characters. Germination potential of the harvested seeds as well as vigour were better in seed planting than stem cutting. Varietal difference showed that line IT07K-298-15 had higher growth, yield and germination potential than IT07K-243-1-2. However, the protein, fat and carbohydrate contents of the latter were higher than the formal. The study concluded that the use of true seed promoted higher productivity. However, planting of stems could still be encouraged on account of a non-significant difference in some of the aforementioned attributes, thereby limiting overreliance on seed as the main source of planting material for propagating the cowpea lines.
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    Effect of phosphorus fertilizer and shoot pruning on growth, yield and fruit quality of tomato (Solanum lycopersicum)
    (Indian Journal of Agricultural Sciences, 2023) Olayinka, B. U.; Oyewole, M.; Jacobs, O. E.; Abdulkareem, K. A.; Lawal, A. R.; AbdulRauf, L. B.; Kareem, I.; Muhammed, G. Y.; Abdulbaki, A. S.
    Phosphorus fertilization or pruning as sole practice has been established to enhance tomato yield. However, there is a dearth of knowledge when both practices are combined. Under potted experiment, two tomato varieties (Tomato 82-B and Local) were subjected to 13 treatment combinations of phosphorus fertilization and pruning between June and September, 2021 in a garden situated at Ilorin, Nigeria. In both varieties, plants receiving 30 kg P/ha + two-stem pruning recorded highest growth indices. Marketable fruit yield was remarkably enhanced under 45 kg P/ha + four-stem pruning and 30 kg P/ha + two-stem pruning in local and Tomato 82-B respectively. Local variety showed more vigorous growth and yield than Tomato 82-B. Proximate compositions showed inconsistent results. Ascorbic acid, beta-carotene and lycopene were highest in tomato plants receiving 60 kg P/ha + four-stem pruning, 15 kg P/ha + three-stem pruning and 45 kg P/ha + four-stem respectively. Tomato 82-B had higher ascorbic acid and beta-carotene than the local variety. Conclusively, four-stem pruning + 45 kg/ha and two-stem pruning + 30 kg/ha are considered optimum for improving the yield of tomato varieties studied and that combination of pruning and phosphorus fertilization showed little influence on the fruit quality.
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    Effects of priming on germination and biochemical attributes of three maize lines under NaCl stress condition
    (Bioagro, 2022) Olayinka, B. U.; Abdulkareem, K. A.; Abdulbaki, A. S.; Alsamadany, H.; Alzahrani Y.; Kareem, I.; Ayinla, A.; Kolawole, O. S.; Adam, O. I.; Odudu, F. U.; Ibuowo, M. B.; Mustapha, O. T.; Sulyman, A.
    The adverse effect of salinity has been established to vary between different varieties of the same plant species. This study was therefore conducted to determine the tolerability of three newly released lines of maize to saline conditions when primed with ethylene diamine tetraacetic acid (EDTA) and salicylic acid (SA) each at 1.0 M concentration; seeds primed with distilled water were used as control. Concentrations of 0, 50, 100, 150 and 300 mM NaCl were tested. The experiment followed a 3x3x5 factorial arrangement of treatments with three replications. The results revealed significant interaction between maize lines and salinity where the germination percentage of line SWAN-LSR-Y was much more affected than the other lines at the salinity level of 50 mM, and its speed of germination was more affected than the others when passing from 150 to 300 mM NaCl. The seedling lengths (radicle and plumule) and seed vigor index were influenced by significant interaction between the primer and salinity, where EDTA enhanced better seedling growth than the other primers when the salinity did not exceed 150 mM. OMR-LSR-SY maize line did not show tolerability at this concentration. Similarly, EDTA and SA treated maize lines showed lower accumulation of reactive oxygen species such as superoxide anion radical (O2-), hydrogen peroxide (H2O2), as well as a decrease in the malondialdehyde (MDA) contents, most importantly in SWAN-LSR-Y and BR9928-OMR-SR-Y maize lines. Catalase (CAT) and superoxide dismutase (SOD) activities were enhanced in SWAN-LSR- Y and BR9928-OMR-SR-Y upon application of EDTA.
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    Proximate composition, amino acid and fatty acid profiles of eight cultivars of groundnut grown in Nigeria
    (Legume Research, 2023) Olayinka, B. U.; Abdulbaki, A. S.; Alsamadany, H.; Alzahrani, Y.; Omorinoye O. A.; Olagunju G. R.; Sulyman, A.
    Background: Groundnut had been established to have great health benefits on account of its biochemical constituents. Methods: Eight cultivars of groundnut grown in Nigeria were analyzed using standard protocols for proximate compositions, amino acid and fatty acid profiles with the sole aim of selecting the most promising cultivars in terms of nutrient composition and oil stability. Result: The results indicated that crude protein was the highest in MK 373 and lesser in Samnut 22. Crude fat ranged from 44.68% in Samnut 21 to 49.98% in Samnut 23. The major amino acids were leucine, glutamic acid and aspartic acid. The cultivars Samnuts 21 and 22 showed higher essential amino acids (EAA), while higher non-essential amino acid (NEAA) was recorded in MK 373. The major fatty acids were palmitic, oleic and linoleic acids. Among the cultivars, Samnut 11 was the only cultivar with better oil quality on account of higher oleic and linoleic O/L and total poly unsaturated fatty acid and total saturated fatty acid (TPUS/TS) ratios that compared well with Codex/WHO standards. The results, in general, have shown that Samnuts 11, 21, 22 and MK 373 are the potentials cultivars that could be selected for breeding programme to improve the quality of groundnut in Nigeria.
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    Rubisco and abiotic stresses in plants: Current assessment.
    (Turkish Journal of Botany, 2022) Abdulbaki, A. S.; Alsamadany, H.; Alzahrani, Y.; Olayinka, B. U.
    Abiotic stresses are serious environmental factors militating against the production of many crops around the world. The consequence of this, is the difficulty of meeting the demands of the increasing world population. Aside from other negative effects, reduction in photosynthesis is an important feature of abiotic stresses. Abiotic stresses limit photosynthesis in a number of ways. The reduction in ribulose 1, 5-bisphosphate carboxylase/oxygenase (Rubisco) content and activity is one of the paramount ways through which abiotic stresses affect photosynthesis. Rubisco is the CO2 fixing enzyme of photosynthesis and also catalyses the photo-respiratory carbon oxidation. The enzyme has low turnover and also copes with competitive inhibition by O2. Hence, manipulating the enzyme in order to boost photosynthesis has been the target of scientists, especially in stressed environments. Based on recent studies, the mechanism of the harmful effects of abiotic stresses on Rubisco is examined in this review. In addition, the prevalent ways through which Rubisco can be made to thrive well despite the various abiotic stresses are evaluated. This review paper also outlines practicable approaches to promote existing ways of enhancing Rubisco tolerance to abiotic stresses in order to produce more crops with higher stress resilience.
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    Seed priming of pepper (Capsicum annuum L.) with β-aminobutyric acid (BABA) alleviates drought stress
    (Pakistan Journal of Botany, 2024) Abdulbaki, A. S.; Alsamadany, H.; Alzahrani, Y.; Hesham, F.; Alharby, H. F.; Olayinka, B. U.
    The problem of drought in many major crops such as Capsicum annuum are onerous and numerous but not insurmountable. β- aminobutyric acid (BABA) seed priming was used in the present study to investigate its effectiveness as a panacea in relieving drought stress in C. annuum. The drought regimes included the withdrawal of irrigation for 0, 3, 5 and 7 days. C. annuum seeds were primed with 1.0 mM BABA. These four drought conditions were paired in relation to the BABA primed and un-primed seeds to make 8 treatments and each treatments had 3 replicates. Measurements to assess manifestations of drought with or without BABA were taken morphologically, physiologically and biochemically. The outcome of the findings revealed that the progressive drought stress was telling adversely on the performance of the plant. BABA, in no small measure, was able to sustain the stable growth of the plant accordingly with the severity of drought. Highlights of its efficacies include improving the plant height, leaf area, stomatal conductance, and transpiration, scavenging ROS production through boosting of antioxidants, preventing lipid peroxidation, maintaining chlorophyll content and promoting proline accumulation. The use of BABA at such concentrations as 1.0 mM is thus prescribed in battling water deficit challenges in C. annuum.