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Articles by A.A. Aliero
Total Records ( 8 ) for A.A. Aliero
  A.A. Aliero
  The differential responses of four Solanum species to seasonal dynamics in Sokoto geo-ecological zone of Nigeria were evaluated to exploit their potential for an-all-year-round cultivation. The plant height and number of leaves were markedly affected by the seasonal changes, while leaf length and width were insignificantly influenced (p>0.05). The effect of season on days to 50% flowering, fruit per branch, flower/branch was significantly affected (p<0.05). The number of fruit/plant was insignificantly affected by seasonal dynamics, a trend of horticultural importance that could be exploited for the cultivation of these species irrespective of the season. Correlation study showed significant positive and negative associations in some of the characters evaluated at 5 and 1% probability. The results of this study highlight the need for all-the-year-round cultivation of these species irrespective of the season.
  A.A. Aliero
  Sesamum indicum is a plant of repute, nutritionally and medicinally worldwide. In an effort to improve the cultivation of local cultivar of this plant, the effect of hydroxylamine (HA) on its seed germination, vegetative and yield components were investigated. Germination was found to be influenced significantly by soaking the seeds in varied concentrations of HA. The untreated seeds were used as a control. The germination percentage was found to be dose dependent. Plant height increased at low concentration and decreases by increasing HA concentration in M1. The number of leaves were markedly influenced by HA treatment and 0.09% was found to be optimum for leaves production in this study. The pattern of growth in the M2 generation appears to be retrogressive as the level of variation was found to be insignificant except in the numbers of leaves and capsules. Treating the seeds of S. indicum with hydroxylamine increased the germination and seedling development. None of the treatment induces chlorophyll deficient mutants.
  A.A. Aliero , P.O. Adebola , D.S. Grierson and A.J. Afolayan
  The response of Solanum pseudocapsicum to watering periods and nitrogen levels was investigated in a glasshouse experiment. The two factors studied significantly affected the vegetative growth and biomass production at p≤0.05. A significant interaction was also determined for 70% of the parameters studied. The application of 100 kg N ha-1 was found to be optimum for vegetative growth and biomass production no matter the watering period. Beyond this level, fertilizer application did not increase the magnitude of the growth parameters. The result of this study showed that this plant, although grows in the wild, is intolerant to drought condition and require small amount of fertilizer for its successful propagation. This might explain its adaptation to moist and shaded habitats and its survival ability as indoor ornamental plant.
  A.A. Aliero , D.S. Grierson and A.J. Afolayan
  Solanum pseudocapsicum is a poisonous plant; yet it is used for the treatment of boils, gonorrhea, tonic and against abdominal pains. The essential oil obtained by hydrodistillation of unripe berries of the shrub was analyzed by Gas chromatography-mass spectrometry. Twenty-one compounds were identified, constituting 69.24% of the total oil components. The major compounds were homologous series of alkanes, alcohol, aldehyde and terpenoids. The oil is predominated by decane (41.06%), undecane (29.26%), monoterpenoids (14.79%), sesquiterpene (3.21%) and a diterpene pytol (5.94%). These compounds are reported for the first time in this species.
  A.A. Abdullahi , B.L. Aliero , A.A. Aliero and A.A. Zuru
  The effects of organic, inorganic fertilizer and irrigation regime on yield parameters of P. virgatum in upland and lowland areas in Sokoto geoecological region of Nigeria were assessed. Four levels of nitrogen (0, 25, 50 and 75 kg N ha-1), three rates of farmyard manure (0, 5 and 10 t ha-1) and three irrigation regimes (w2, w4 and w6) were set up as a split -plots design. Farmyard manure and irrigation regimes were combined and allocated as the main plots, while nitrogen rates were assigned to the sub-plots and each replicated three times. Results revealed that raising nitrogen rate from 50 to 75 kg N ha-1, farmyard manure rate from 5-10 t ha-1 or irrigation intervals from 2 to 4 days did not show a significant (p>0.05) increase in yield components evaluated. Dry matter accumulation was significantly (p<0.05) affected by irrigation regime in both seasons and locations and 2 day interval irrigation had the highest dry matter yield. A significant interaction between nitrogen and manure application was observed only at upland in 2008/2009 and a combination of 75 kg N ha-1 and 10 t ha-1 manure produced the highest values in all the parameters evaluated. The study suggest that 50 kg N ha-1 with 5 t ha-1 of farmyard manure and 2 day irrigation interval gave the highest yield. A combination of 50 kg N ha-1, with 5 t ha-1 of farmyard manure and 2 day irrigation interval were found to be optimum for growth and yield of Switchgrass under both lowland and upland conditions in Sokoto geoecological zone of Nigeria.
  I.U. Karaye , A.A. Aliero , S. Muhammad and L.S. Bilbis
  Amino acid composition and volatile organic compounds (VOCS) of five Nigerian cucurbits namely: Luffa aegyptiaca (Mill.), Citrullus lanatus (Thunb. Matsum), Cucurbita maxima (Duchesne, ex Lam), Cucumis metuliferus (E.Mey. ex Naudin) and Momordica balsamina (L.) were investigated using Amino acid Analyzer and Gas Chromatography-Mass Spectrometry (GC-MS). The proportion of essential amino acids ranged from 22.75- 30.23 g/100 g protein with the highest content in M. balsamina with 30.23 g/100 g protein and the least in C. lanatus with 22.75 g/100 g protein. High content of leucine was found in C. maxima and M. balsamina with 7.04 and 6.11 g /100 g protein respectively. The GC-MS analysis revealed the presence of thirty-one compounds, the most abundant classes of organic compounds in L. aegyptiaca comprised of esters with 65.17% and Fatty Acids (FA) had 32.62% while hydrocarbons amounted to 29%. In C. lanatus, seven compounds were identified dominated by FA and hydrocarbons with 91.5 and 7.25% respectively. In C. maxima, ten compounds were identified dominated by FA (52.24%) and hydrocarbons (43.46%). In C. metuliferus, FA had 30.74% while aromatic compounds and alcohol had 9.18 and 0.68%, respectively. Among the five seeds studied, the most abundant compounds identified were linoleic acid methyl ester in L. aegyptiaca with 63.72%. Cis-cis linoleic acid is most abundant in M. balsamina (62.03%) totaling the fatty acid portion to 86.41%. These results suggest the potential of the seeds as a source of amino acids and fatty acids that could be useful in food and feed fortification strategies. The unique VOCS could be useful as biomarkers for delimitation of the studied species.
  A.A. Aliero , D.S. Grierson and A.J. Afolayan
  Acetone, methanol and water extracts from the leaves, fruits and roots of Solanum pseudocapsicum were investigated for their antimycotic activities. The growth inhibition of the fungi was determined using the agar dilution assay against five fungal species. Acetone and methanol extracts showed significant growth inhibition of Aspergillus niger and Penicillium notatum with inhibitory activity ranging from 50.83 to 80.55% at 5.0 mg mL-1. The growth of Fusarium oxysporum was markedly suppressed by methanol and acetone extracts from the leaves and the roots. None of the extracts suppressed the growth of Aspergillus flavus and Candida albicans at the tested concentrations. This study suggests a new potential application of S. pseudocapsicum as a fungicide.
  M.O. Sofidiya , F.O. Jimoh , A.A. Aliero , A.J. Afolayan , O.A. Odukoya and O.B. Familoni
  Lecaniodiscus cupanioides Planks. ExBth (Sapindaceae) is widely used in Nigerian folk medicine for the treatment of inflammatory conditions, hepatomegaly and bacterial infections. This study investigated the antioxidant and antibacterial activity of the methanolic extract of the leaves to justify its use in traditional medicine. Extract exhibited strong DPPH and ABTS radical scavenging activity greater than BHT and comparable to ascorbic acid. 0.1 mg mL-1 extract inhibited DPPH and ABTS radicals up to 99.4 and 98.5%, respectively. Multiple antioxidant activity of extract was evident with moderate reducing power. TAE (37.678±1.66 mg g1 dry extract) was higher than that reported in many other plant extracts. Flavonoid and proanthocyanidin contents were 4.142±0.06 and 2.548±0.32 mg g-1, respectively. Strong correlation recorded; ABTS/TAE (R2 = 0.89), DPPH/TAE (R2 = 0.90). Antimicrobial activity was highest on gram +ve organisms B. cereus, S. aureus, M. kristine and S. pyrogens (MIC value < 1.0 mg mL-1). Gram-ve S. pooni and P. aeruginosa (MIC value = 2.0 mg mL-1). Results attributed the antioxidant potential of L. cupanioides leaf extract to its strong proton donating ability and justified its use for the treatment of bacterial infections in ethnomedicine.
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