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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
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Journal of Natural Sciences Research
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2224-3186 - ISSN (Online) 2225-0921
Published by IISTE Homepage  [37 journals]
  • Journal coverpage

    • Authors: Journal Editor
      Abstract: Journal coverpage
      Issue No: Vol. 13
       
  • Investigation of Finger Millet Floral Structure and Hand Emasculation

    • Authors: Tafere Mulualem Emrey
      Abstract: The knowledge of floral structure, floral biology and pollination behavior are pre-requisite for understanding the system and its manipulation for developing a proper crossing in which is largely lacking in small millets. The variability in floral structure and biology was studied in various finger millet genotypes. The inflorescence consisted of a cluster of variable number of spikes called fingers. Each finger has two opposite rows of spikelets. A spiklete contains variable number of florets. The florets are hermaphrodite, perfect except for the terminal florets. The floret is covered by two large glumes, enclosed between a pair of palea.  The florets are in the axil of lemma. The androecium consists of three stamens. The gynoecium is bicarpellary, unilocular with superior ovary. Near the base of ovary two lodicules are present. There was a wide range of variation in the length of anther, filament, stigma and style. Anthesis occurred between 1.00 a.m. to 6.00 a.m., the peak period of anthesis being between 3.00 to 5.00 a.m. the pollen viability at the time of dehiscence of anthers ranged from 76.92 to 100 percent. Keywords: Emasculation, Finger millet, floral structure
      DOI : 10.7176/JNSR/13-14-01 Publication date:July 31st 2022  
      Issue No: Vol. 13
       
  • Soil Acidity in Ethiopia: Its Causes, Effects on Crop Production and
           Management Experiences So Far- Review

    • Authors: Zerihun Getachew Gebrehana
      Abstract: Soil acidity is a serious chemical problem that limits agricultural productivity in most of the highlands of Ethiopia as well as in the western part of the country. These acidic soils, which cover an estimated 41% of the arable land in Ethiopia, are inherently infertile and exhibit aluminium (Al) or manganese (Mn) toxicity, which are generally considered to be the major limiting factor for plant growth in acidic soils. The major factors leading to acid soils in western Ethiopia include erosion of topsoil by heavy rains and high temperatures, which increase the greatest loss of organic matter and leaching of exchangeable basic cations (Ca2+, Mg2+, Na+ and K+). Organic matter can be easily degraded and lost through conventional land clearing practices such as burning and direct sun and rain exposure, which is exacerbated by improper agricultural practices. If these soils are not properly managed after clearing, they can quickly lose much of their original fertility and beneficial physical as well as biological properties. It has been suggested that maintaining production on these soils requires an effort far beyond the means of poor farmers. Because low pH affects the availability of nutrients, especially phosphorus and other macronutrients, correcting low pH through liming and/or the application of organic matter (such as compost and vermicompost) is critical to the sustainable management of these acidic soils. The recently introduced technology of organic soil amendment with vermicompost has proven to be a potential resource to significantly improve soil fertility and soil health in various soil types around the globe. Therefore, farmers should be encouraged to increase the productivity of acidic soils through organic amendments such as compost/vermicompost. Vermicomposting, which is still very young and rarely practiced by farmers, should be supported and strengthened by more research and extension than we currently have to produce high quality vermicompost to amend acidic soils of Ethiopia and restore soil life. Keywords: Acidic soils, lime, vermicompost, organic materials 
      DOI : 10.7176/JNSR/13-14-02 Publication date:July 31st 2022
      Issue No: Vol. 13
       
  • Histological and Biochemical Alterations in the Pancreas of Diabetic
           Wistar Rats Treated with Garcinia Kola and Tetracarpidium Conophorum
           Extracts

    • Authors: Emmanuel Dirokweni, Idorenyin I. Umoh, Christopher C. Mbadugha, Samuel J. Umanah, Francis N. Odinukaeze
      Abstract: To ascertain the stated effects, phytochemical and LD50 studies of the extracts were determined. Thirty-six adult male Albino Wistar rats weighing 180 – 200 g were divided into 6 groups (n =6). Diabetes mellitus was induced by single intraperitoneal injection of streptozotocin (45 mg/kg bw) reconstituted in citrate buffer pH 4.5, and rats with fasting blood glucose (FBG) ≥ 11.3 mmol/L after three days of induction were used for the study. Glibenclamide significantly (p < 0.05) reduced FBG from 22.10 ± 1.65 mmol/L to 4.48 ± 0.29 mmol/L, G. kola from 22.04 ± 4.06 mmol/L to 7.40 ± 2.41 mmol/L, T. conophorum from 14.26 ± 2.38 mmol/L to 5.98 ± 0.57 mmol/L, and combined from 17.54 ± 1.72 mmol/L to 11.58 ± 2.11 mmol/L. Glibenclamide and the extracts significantly increase the insulin levels. G. kola significantly (p < 0.05) lowered the urea and raised the chloride and creatinine levels. T. conophorum significantly (p < 0.05) reduced the urea and increased the sodium and chloride levels, while the combined treatment significantly lowered the urea and raised the sodium levels. Glibenclamide and the extracts significantly ameliorated the histological alterations in the pancreas but only the plant extracts significantly attenuated the alterations in the kidneys. It may be concluded that the combined administration of G. kola and T. conophorum extracts and their single treatments showed hypoglycaemic and nephroprotective effects. Keywords:Albino Wistar rats, Streptozotocin, Glibenclamide, Garcinia Kola, Tetracarpidium conophorum, Pancreas, Kidney
      DOI : 10.7176/JNSR/13-14-04 Publication date:July 31st 2022
      Issue No: Vol. 13
       
 
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