Dr. Omwoyo Ombori

Title/Qualifications: Ph.D
Department/Unit/Section: Plant and Microbial Sciences
Contact Address: P.O Box 43844 (00100) NAIROBI
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Tell: +254-20-8710901 Ext 57177
Position: Lecturer
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Publications

  • Kawaka, F, Ombori, O., Maingi, J., Amoding, A., Mukaminega, D. and Muoma, J. (2018). Response of Common Bean (Phaseolus vulgaris L.) Cultivars to Water Hyacinth (Eichhornia crassipes [Mart.] Solms) Compost in Kisumu, Kenya along the Lake Victoria Basin. Journal of Experimental Agriculture International 28(1): 1-9, 2018; Article no.JEAI.8260. ISSN: 2457-0591.

  • Kawaka,F. Makonde, H., Dida, M., Opala, P., Ombori, O., Maingi, J. and Muoma, J. (2018). Genetic diversity of symbiotic bacteria nodulating common bean (Phaseolus vulgaris) in Western Kenya. PLoS One 13 (11), e0207403.
  • Beesigamukama, D., Tumuhairwe, J.B., Muoma, J., Maingi, J.M., Ombori, O, Mukaminega, D., Nakanwagi, J. and Amoding, A. (2018). Agronomic effectiveness of water hyacinth-based composts. African Journal of Agricultural Research, 13(39): 2055-2062. DOI: 10.5897/AJAR2018.13440. ISSN: 1991-637X.  http://www.academicjournals.org/AJAR
  • Beesigamukama, D., Tumuhairwe, J.B., Muoma, J., Maingi, J.M., Ombori, O, Mukaminega, D., Nakanwagi, J. and Amoding, A. (2018). Improving Water Hyacinth-Based Compost for Crop Production. Journal of Agricultural Science and Food Technology, 4 (3): 52-63. ISSN: 2465-7522.  http://pearlresearchjournals.org/journals/jasft/index.html
  • Koskey G., Mburu, SW, Kimiti, J.M., Ombori, O., Maingi, J.M. and Njeru, E.M. (2018) Genetic characterization and diversity of Rhizobium isolated from root nodules of Mid-Altitude climbing bean (Phaseolus vulgaris L.) varieties. Frontiers in Microbiology, 9:968. doi: 10.3389/fmicb.2018.00968
  • Mose, DN., Ombori. O. Allan, M.J. and Okemo, P. (2018). Sources of microbial contaminants in biosafety laboratories in Kenya. Journal of Advances in Biology & Biotechnology 17(2): 1-11. Article no.JABB.38583. ISSN: 2394-1081.
  • Kawaka, F, Dida, M., Opala, P., Ombori, O., Maingi, J., Amoding, A. and Muoma, J. (2018). Effect of nitrogen sources on the yield of common bean (Phaseolus vulgaris) in Western Kenya. Journal of Plant Nutrition, https://doi.org/10.1080/01904167.2018.1458870
  • Koskey G., Mburu, SW, Kimiti, J.M., Ombori, O., Maingi, J.M. and Njeru, E.M. (2018) Genetic Characterization and Diversity of Rhizobium Isolated From Root Nodules of Mid-Altitude Climbing Bean (Phaseolus vulgaris L.) Varieties. Frontiers in  Microbiology, 9:968. doi: 10.3389/fmicb.2018.00968
  • Mose, DN., Ombori. O. Allan, M.J. and Okemo, P. (2018). Sources of microbial contaminants in biosafety laboratories in Kenya. Journal of Advances in Biology & Biotechnology 17(2): 1-11. Article no.JABB.38583. ISSN: 2394-1081.

  • Jackline, T.E., Njoka, F.M., Ombori, O. and Peter N. Njau, P.N. (2018). Introgression of stem rust resistance into popular Kenyan wheat varieties to improve production. Journal of Advances in Biology & Biotechnology, 17(1): 1-11. Article no.JABB.38609. ISSN: 2394-1081. DOI : 10.9734/JABB/2018/38609

  • Mbinda, W., Ombori, O., Dixelius, C. and Oduor, R. (2018). Xerophyta viscosa Aldose Reductase, XvAld1, enhances drought tolerance in transgenic sweetpotato. Molecular Biotechnology, 60(3): 203-214. DOI https://doi.org/10.1007/s12033-018-0063-x
  • Jackline, T.E.,  Ombori, O.,  Njau, P.N. and Njoka, F.M. (2017). Determination of Stem Rust Ug99Disease Severity in Selected Wheat Backcrosses in Kenya. IOSR Journal of Agriculture and Veterinary Science (IOSR JAVS), 10(5): 66-71. e-ISSN: 2319-2380, p-ISSN: 2319-2372. www.iosrjournals.org
  • Koskey,G;  Mburu, S.W.;  Njeru, E.M.; Malia, J.K.; Ombori,O. and  Maingi, J.M. (2017). Potential of native rhizobia in enhancing nitrogen fixation and yields of climbing beans (Phaseolus vulgaris L.) in contrasting environments of Eastern Kenya. Frontiers in Plant Science, 8:443. doi: 10.3389/fpls.2017.00443
  • Wekesa, C.S.; Muoma, J.; Ombori, O., Maingi, J.; Okun, D.,  Juma, K.;  Okoth, P.; Wamalwa, E.; Kollenberg, M. and Mauti, E.  (2017). Genetic Characterization of Rhizosphere Bacteria that inhabit common bean nodules in Western Kenya soils.  Applied Microbiology, 3(1): 128.  DOI: 10.4172/2471-9315.100012. ISSN:2471-9315
  • Mbinda, W., Anami, S., Ombori, O., Dixelius, C. and Oduor, O. (2016).  Efficient Plant Regeneration of Selected Kenyan Sweetpotato (Ipomoea batatas (L.) Lam.) Cultivars through Somatic Embryogenesis. Journal of Tissue Science & Engineering, 7(2). DOI: 10.4172/2157-7552.1000176
  • Mburu, S.W., Koskey, G., Kimiti, J.M., Ombori, O., Maingi, J.M. and Njeru, E.M. (2016). Agrobiodiversity conservation enhances food security in subsistence‑based farming systems of Eastern Kenya. Agriculture & Food Security, 5(19). DOI 10.1186/s40066-016-0068-2

  • Naluyange, V., Ochieno, D.M.W., Wandahwa, P., Odendo, M., Maingi, J.M., Amoding, A., Ombori, O., Dative Mukaminega, D. & John Muoma, J. (2016). Belowground influence of Rhizobium inoculant and water hyacinth composts on yellow bean infested by Aphis fabae and Colletotrichum lindemuthianum under field conditions. Journal of Plant Studies, 5(2): 32-36.
  • Piero, N.M.,Murugi N.J., Okoth, O.R., Ombori, O.R.,Jalemba, M.A. and Chelule, C.R. (2015). RNAi-Mediated Downregulation of Cyano-Glycoside Biosynthesis in Kenyan Cassava (ManihotesculentaCrantz) Genotypes. Plant Biochemistry and Physiology, 3 (3):148-153. doi:10.4172/2329-9029.1000148
  • Ngugi, M. P., Murugi, N.J., Oduor, O. R., Mgutu, A. J., Ombori R. O. and Cheruiyot, R.C. (2015). Determination of Cyanogenic Compounds Content in Transgenic Acyanogenic Kenyan Cassava (ManihotesculentaCrantz) Genotypes: Linking Molecular Analysis to Biochemical Analysis. Analytical and Bioanalytical Techniques, 6(5):264-271.
  • Ngugi M.P., Oduor, R.O. Omwoyo, R.O.,Njagi, J.M., Mgutu, A.J. and Cheruiyot R.C. (2015). Regeneration of Kenyan Cassava (ManihotEsculentaCrantz) Genotypes. Plant Biochemistry and Physiology, 3: 147. doi:10.4172/2329-9029.1000147.
  • Ngetich, A., Runo, Ombori, O., Ngugi, M, Kawaka, F., Perpetua, A. and Nkanata, G., (2015). Low Cost Micropropagation of Local Varieties of Taro (Colocasia esculenta spp.). British Biotechnology Journal 6(4): 136-145, Article no.BBJ.2015.036. ISSN: 2231–2927. www.sciencedomain.org
  • Gacheri, P., Machuka, J., Ombori,O. and Bukach, B. (2015). Agrobacterium Mediated Transformation of Selected Maize Inbred Lines with pPZP200 towards Enhancement of Lysine and Methionine Content. Journal of Biology, Agriculture and Healthcare, 5(2): 6-18. ISSN 2224-3208(Paper) ISSN 2225-093X (Online). www.iiste.org

  • Mutua, B.M., Muriithi, J.K. and Ombori, O. (2014). Farmers’ awareness level on the effect of parthenium weed (Parthenium hysterophorus L.) on agricultural production and its control in Nyando division, Kenya. International Journal of Agriculture. Photon, 125: 305-310.

  • Kawaka, F, Dida, M.M., Opala, P.A., Ombori, O., Maingi, J., Osoro, N. Muthini, M. Amoding, A., Mukaminega, D. and Muoma, J., 2014, Symbiotic Efficiency of Native Rhizobia Nodulating Common Bean (Phaseolus vulgaris L.) in Soils of Western Kenya., International Scholarly Research Notices, 2014, Article ID 258497. http://dx.doi.org/10.1155/2014/258497
  • Osoro, N.O, Kawaka, F, Naluyange, V, Ombori, O, Muoma, J.O., Amoding, A, Mukaminega, D., Muthini, M. and Maingi, J.M,Effects of water hyacinth (Eichhornia crassipes 1 [mart.] solms) compost on growth and yield of common beans (Phaseolus vulgaris) in Lake Victoria Basin European International Journal of Science and Technology, 3 (7): 173-186. ISSN: 2304-9693. www.eijst.org.u

  • Mvuria, J.M. and Ombori, O.,2014,Low Cost Macronutrients in the Micropropagation of Selected Sweet Potato [Ipomoea batatas (L.) Lam] Varieties Mvuria, Journal of Agriculture and Environmental Sciences, 3(1): 89-101. ISSN: 2334-2404. www.aripd.org/jaes

  • Osoro, N., Ombori, O., Muthini, M., Muoma, J.O., Amoding, A., Mukaminega, D., Muthini, M. and Maingi, J.M. (2014). Effects of Water Hyacinth (Eichhornia crassipes [mart.] solms) Compost onGrowth and Yield of Common Beans (Phaseolus vulgaris) in Lake Victoria Basin. European International Journal of Science and Technology.
  • Muoma, J.V.O. and Ombori, O. (2014). Agrobacterium-Mediated Transformation of Selected Kenyan Maize (Zea mays L.) Genotypes by Introgression of Nicotiana Protein Kinase (npk1) to Enhance Drought Tolerance. American Journal of Plant Sciences, 5: 863-883 http://www.scirp.org/journal/ajps
  • Kawaka, F., Ombori, O., Maingi, J.M., Amoding, A, Mukaminega, D . and Muoma, J. (2014). Response of Common Bean (Phaseolus vulgaris L.) Cultivars to Water Hyacinth (Eichhornia crassipes [Mart.] Solms) Compost in Kisumu, Kenya along the Lake Victoria Basin. American Journal of Experimental Agriculture. www.sciencedomain.org
  • Naluyangea, V., Ochieno, D.M.W., Maingi, J.M., Ombori, O., Mukaminega, D., Amoding, A., Odendo, M., Okoth, S.A., Shivoga, W..A and Muoma, J.V.O (2014). Compatibility of Rhizobium inoculant and water hyacinth compost formulations in rosecoco bean and consequences on Aphis fabae and Colletotrichum lindemuthianum infestations. Applied Soil Ecology 76 (2014) 68– 77. www.elsevier.com/locate/apsoil.
  • Muthini, M., Maingi, J.M., Muoma, J.O., Amoding, A., Mukaminega, D., Osoro, N. Mgutu, A and Ombori, O. (2014). Morphological assessment and effectiveness of indigenous rhizobia isolates that nodulate P. vulgaris in water hyacinth compost testing field in Lake Victoria Basin. British Journal of Applied Science & Technology, 4(5): 718-738. www.sciencedomain.org.
  • Osoro, N., Ombori, O., M., Muoma, J.O., Amoding, A., Mukaminega, D., Muthini, M. and Maingi, J.M. (2014). Effects of water hyacinth (Eichhornia crassipes [mart.] solms) compost on growth and yield parameters of maize (Zea mays). British Journal of Applied Science & Technology, 4(4): 616-633. www.sciencedomain.org.
  • Atieno, R.N., Owour, O.P. and Omwoyo, O. (2013). Antibiotic Resistance of Fecal Bacteria indicators and Pathogens Isolated from Sludge and Wastewaters of Abattoirs in Nairobi, Kenya. Journal of Biology, 1(5): 106-11. ISSN 2052-0751
  • Atieno, N. A., Owour , O.P. and Omwoyo, O. (2013). Isolation of high antibiotic resistant fecal bacteria indicators, Salmonella and Vibrio species from raw abattoirs sewage in Peri-Urban locations of Nairobi, Kenya. Greener Journal of Biological Sciences 3(5): 172-178. ISSN: 2276-7762.
  • Atieno, N. A., Owour, O.P. and Omwoyo, O. (2013). Heavy metal and associated antibiotic resistance of fecal coliforms, fecal streptococci and pathogens isolated from wastewaters of abattoirs in Nairobi, Kenya. Journal of Applied Biosciences 64:4858 – 4866. ISSN 1997–5902.
  • Ombori, O., Muoma, J.V.O. and Machuka, J. (2013). Agrobacterium-mediated genetic transformation of selected tropical inbred and hybrid maize (Zea mays L.) lines. Plant Cell, Tissue and Organ Culture 113(1): 11-23.
  • Osoro, N., Maingi, J.M., Ombori, O., Muoma, J.O., Amoding, A., Mukaminega, D. and Muthini, M. (2013). Effects of water hyacinth (Eichhornia crassipes [mart.] solms) compost on growth and yield parameters of maize (Zea mays). In C. Onyango, G. Unbehend and M. Lindhauer (eds.), Trends and opportunities in the production, processing and consumption of staple food crops in Kenya. TUD press, Verlag der Wissenschaften GmbH, pp 130-138.
  • Ogero, K., Gitonga N.M, Maina, M., Ombori, O. and Ngugi, M. (2012). Cost-effective nutrient sources for tissue culture of Cassava (Manihot esculenta Crantz). African Journal of Biotechnology 11(66): 12964-12973.
  • Ogero, K., Gitonga N.M., Maina, M., Ngugi, M. and Ombori, O (2012). Low Cost Tissue Culture Technology in the Regeneration of Sweet Potato (Ipomoea batatas (L.) Lam). Research Journal of Biology 2(2): 71-78.
  • Ogero, K., Gitonga N.M, Maina, M., Ombori, O. and Ngugi, M. (2012). Response of two sweet potato (Ipomoea batatas (L.) Lam) varieties regenerated on low cost tissue culture medium. Journal of Agricultural Science and Technology A & Journal of Agricultural Science and Technology B 2(5B): 534-1250.

Papers Presented In Local/Regional/International Workshops/Seminars /Conferences

  • The Sixth African Higher Education Week and RUFORUM Biennial Conference, 22-26 October, 2018.

  • Symbiotic effectiveness of indigenous bradyrhizobia nodulating soybean varieties grown in Eastern Kenya. The 5th African Higher Education Week and RUFORUM Biennial Conference 2016 from 17th to 21st October 2016 held at. Century City Conference Centre, Cape Town, South Africa. 
  • Unlocking climbing bean (Phaseolus vulgaris L.) yield potential using elite native rhizobia in Eastern Kenya. The 5th African Higher Education Week and RUFORUM Biennial Conference 2016 from 17th to 21st October 2016 held at. Century City Conference Centre, Cape Town, South Africa. 
  • Increasing Soybeans and Climbing Beans Production in Smallholders’ Farms in Eastern Kenya. The 5th African Higher Education Week and RUFORUM Biennial Conference 2016 from 17th to 21st October 2016 held at. Century City Conference Centre, Cape Town, South Africa.
  • Kimani J.W., Ombori O., Njoka F.M. and Maina M.  (2014). Increasing regeneration rate of two sweet potato (Ipomoea batatas L.) cultivars on low cost tissue culture media. International conference on “Building a new generation of agricultural scientists”.  “Bridging the gap between society, science and industry” Kenyatta University, Nairobi- Kenya. 1st  - 5th  December, 2014.
  • Muthini, M., Maingi J.M., Muoma, J.O., Amoding, A.M., Mukaminega, D., Newton Osoro, N. and Ombori, O. (2013). Morphological assessment and effectiveness of indigenous rhizobia isolates that nodulate P. vulgaris in water hyacinth compost testing field in Lake Victoria basin. Proceedings of the Natural Resource Management and Ethnobotany and Health Cluster Workshop held from 7th – 12th April 2013, at Mukono, Uganda.
  • Osoro, N., Ombori, O., Muoma, J.O., Amoding, A.M., Mukaminega, D., Muthini, M. and Maingi, J.M. (2013). Effects of water hyacinth (Eichhorniacrassipes [mart.] solms) compost on growth and yield of common beans (Phaseolus vulgaris) in Lake Victoria Basin. Proceedings of the Natural Resource Management and Ethnobotany and Health Cluster Workshop held from 7th – 12th April 2013, at Mukono, Uganda.
  • Muoma, J.O., Ombori, O., Amoding, A.M., Mukaminega, D., Muthini, M., Maingi, J.M. and Osoro, N. (2013). Production of organic fertilizer from water hyacinth (Eichhorniacrassipes [Mart.] Solms) for sustainable organic farming and conservation of ecosystem in Lake Victoria basin. Proceedings of the Natural Resource Management and Ethnobotany and Health Cluster Workshop held from 7th – 12th April 2013, at Mukono, Uganda.
  • Kimani, J.W., Mwangi, M., Ombori, O. and Njoka, F.M. (2012). Increasing the regeneration rate in the three sweet potatoes (Ipomea batatas L.) cultivars under low cost tissue culture conditions. Proceedings of the 12th Workshop on Sustainable Horticultural Production in the Tropics held at Bondo University College, Bondo, Kenya from 4th to 7th December 2012.
  • Ogero, K.O., Gitonga, N.M., Ombori, O. and Mwangi, M. (2012). Micropropagation of Cassava (Manihot esculenta Crantz) and Sweet Potato (Ipomea batatas (L.) Lam) through Low Cost Tissue Culture. 13th Biannual Scientific Conference held at KARI Headquarters Kiptagat Road, Nairobi Kenya 21st – 28th October 2012.
  • Muoma, J.V.O., Maingi, J., Ombori, O., Amoding, A. and Mukaminega, D. (2012). Production of organic fertilizer from water hyacinth (Eichhornia crassipes [Mart.] Solms) for organic farming and conservation of ecosystem in Lake Victoria basin. Proceeding of the Workshop for the VicRes projects held in Kigali-Rwanda between 14th–16th June 2012.
  • Ogero, K.O; Gitonga, N.M. Mwangi, M., Ombori, O. and Ngugi, M. (2011). Evaluating the feasibility of using locally available fertilizers as low cost nutrients in Sweet potato (Ipomoea batatas (L.) Lam) tissue culture. 10th African Crop Science Society Conference ―From Soil to Soul: Crop Production for Improved African Livelihoods and a Better Environment for Future Generations. Centro Internacional de Conferências Joaquim Chissano Maputo – Mozambique, 10th – 13th October 2011.
  • Ogero, K.O; Gitonga, N. M. Mwangi, M. Ombori O. and Ngugi, M. (2011). Response of two Sweet potato (Ipomoea batatas (l) lam) varieties regenerated on low cost tissue culture medium. 10th African Crop Science Society Conference ―From Soil to Soul: Crop Production for Improved African Livelihoods and a Better Environment for Future Generations. Centro Internacional de Conferências Joaquim Chissano Maputo – Mozambique, 10th – 13th October 2011.
  • Ogero K.O., Gitonga N.M. and Ombori O. (2010). Micropropagation of Cassava (Manihot esculenta Crantz) and Sweet Potato (Ipomea batatas (L.) Lam) through Low Cost Tissue Culture. 10th workshop on sustainable Horticultural Production in the Tropics. Value chains of ornamentals for local and export market 8th – 11th December 2010.
  • Ombori O. (2010). Networking, Partnerships & Trust Building Proceedings of Multi-stakeholders workshop on Strengthening University Capacity for Promoting, facilitating and teaching Rural Innovation processes held at Egerton University 3rd-8th October 2010. Sponsored by European Development Fund.
  • Ombori, O., Gitonga N.M., Muoma, O. Kiogora, D. and Ngugi, M. (2010). Cost effective approaches for in vitro mass production of banana (Musa sapientum L.) plantlets in Kenya. Proceedings of the 1st East African regional scientific conference of Pure and Applied Sciences held at Kenyatta University, Nairobi, Kenya between 10th -14th August, 2010. Sponsored by School of Pure and Applied Sciences, Kenyatta University.

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