Title/Qualifications: Ph.D
Department/Unit/Section: Plant Science
Contact Address: P.O Box 43844 (00100) NAIROBI
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Position: Senior Lecturer
Area of Specialization: Plant Biotechnology & Physiology
Google Scholar: Omwoyo
ORCID ID: 0000-0001-5353-467X


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Research Interests:

  • Biotechnology and the use of molecular markers in genomic characterization More especially in the improvement of crop production, food production,
  • induction/selection of stress tolerant crops against drought, salinity, diseases and pests.
  • Increase in crop production using organic fertilizer.
  • Improvement of crop production using indigenous rhizobia, bradyrhizobiua and Arbuscular mycorrhiza fungi
  • Micropropagation and characterization of crops, ornamentals, medicinal plants and indigenous trees using low cost technology.
  • Conservation of genetic resource through the application of biotechnological techniques. 

Publications

Referred Journals

  • Opere, W.M., John M., Ombori, O. and Kiulia, N.M. (2022). Identification of enteroviruses along Lake Victoria shoreline-a potential indicator of sewage Pollution. Access Microbiology 2022;4:000334
  • Wahome, C.N., Maingi,J.M., Ombori, O, Kimiti J.M..and Njeru, E.M. (2021) Banana production trends, cultivar diversity and tissue culture technologies uptake in Kenya. International Journal of Agronomy, https://doi.org/10.1155/2021/6634046
  • Ngai, D.G., Nyamache, A.K. and Ombori, O. (2021). Prevalence and antimicrobial resistance profiles of Salmonella species and Escherichia coli isolates from poultry feeds in Ruiru Sub-County. BMC Research Notes, 14: 41.  https://doi.org/10.1186/s13104-021-05456-4 
  • Wasonga, M.O., Maingi, J. and Omwoyo, O. (2021). Effects of contamination of freshwater habitat with common heavy metals andanions on the prevalence of human adenoviruses and enteroviruses. Frontiers in Public Health, 8: 603217. DOI: 10.3389/fpubh.2020.603217. | www.frontiersin.org
  • Nyamwaka, I.S., Monda, E.,  Ombori, R.O. and Kwach, J. (2020). Sources of Fungal Contamination of Fresh and Dried Fish in Kisii County, Kenya. Microbiology Research Journal International 30(10): 50-62. ISSN: 2456-7043
  • Opere, W.M., John, M. & Ombori, O. Molecular Detection of Human Enteric Adenoviruses in Water Samples Collected from Lake Victoria Waters Along Homa Bay Town, Homa Bay County, Kenya. Food and Environmental Virology (2020). https://doi.org/10.1007/s12560-020-09444-y
  • Naluyange V., Ochieno, D.M.W., Wandahwa, P.,  Maingi, J.M., Ombori, O.. Mukaminega, M., Amoding, A., Odendo, M. and Muoma,  J.V.O  (2020). Performance of Mwitemania Bean Under the Influence of Nitrogen-Fixing Rhizobium Inoculant, Water Hyacinth Composts and DAP Fertilizer in a Field Infested with Aphis fabae and Colletotrichum lindemuthianum. In: Sutton M.A. et al. (eds) Just Enough Nitrogen. Springer, Cham, pp 125-138. https://doi.org/10.1007/978-3-030-58065-0_9
  • Njeru, E. M., Muthini, M., Muindi, M.M.,  Ombori, O., Nchore, S.B. Runo, S. and  Maingi, J.M. 2020).  In: Exploiting Arbuscular Mycorrhizal Fungi-Rhizobia-Legume Symbiosis to Increase Smallholder Farmers’ Crop Production and Resilience Under a Changing Climate. In: Singh B., Safalaoh A., Amuri N., Eik L., Sitaula B., Lal R. (eds) Climate Impacts on Agricultural and Natural Resource Sustainability in Africa. Springer, Cham, Pp 471-488. https://doi.org/10.1007/978-3-030-37537-9_27
  • Mburu, W.,  Koskey,  G., Njeru, E.N., Ombori, O.,  Maingi, J.M. &  Kimiti, J.M. (2020). Differential Response of Promiscuous Soybean to Local Diversity of Indigenous and Commercial Bradyrhizobium Inoculation Under Contrasting Agroclimatic Zones. International Journal of Plant Production
  • Asande, L.K., Omwoyo, O., Oduor, R.O  and Nyaboga, E.N. (2020). A simple and fast Agrobacterium‑mediated transformation system for passion fruit KPF4(Passiflora edulis edulis × Passiflora edulis f. flavicarpa) , Plant Methods, 16:141. https://doi.org/10.1186/s13007-020-00684-4
  • Asande, L.K., Omwoyo, R.O., Nyaboga, E.N. and Oduor, R.O.  (2020). Efficient Shoot Organogenesis Using Leaf Disc and Nodal Explants of Passion Fruit (Passiflora edulis Sims) and Genetic Fidelity Assessment Using Sequence-Related Amplified Polymorphism (SRAP) Markers. International Journal of Agronomy,  2020, Article ID 3205710.   https://doi.org/10.1155/2020/3205710
  • Opere, W.M., John, M. Ombori, O. (2020). Occurrence of Enteric Viruses in Surface Water and the Relationship with Changes in Season and Physical Water Quality Dynamics. Advances in Virology, 2020, Article ID 9062041. https://doi.org/10.1155/2020/9062041
  • Nyamwaka, I.S., Monda, E., Ombori, R.O. and Kwach, J. (2020). Prevalence and Characterization of Moulds Associated with Fish Feeds Sold in Kisii County, Kenya. Journal of Advances in Microbiology, 20(8): 31-41, Article no.JAMB.60520. ISSN: 2456-7116
  • Towett, G., Maingi, J, Omwoyo Ombori, O. and Mbuvi, H. (2020). Reduction of mobile heavy metals during composting of water hyacinth International Journal of Biological, Physical and Chemical Studies (IJBPCS),  www. ijbpcs.one
  • Mwaura, ., Kamau,  J., omwoyo,  O. (2020).  An ethnobotanical study of medicinal plants commonly traded in Kajiado, Narok and Nairobi counties, Kenya . East African Journal of Science, Technology and Innovation, Vol. 1 (3): 2020.
  • Alaro, L., Monda, E., Ombori, O., & Okun, D. (2020). Mr. Fumonisin B1 (FB1) and fumonisin B2 (FB2) levels in maize genotypes grown in Nakuru County-Kenya. Current Educational Research, 3(02). Retrieved from http://educationalresearch.in/index.php/cer/article/view/50
  • Langat ,C., Ombori, O., Leley, P., Karanja, D., Cheruiyot, R., Gathaara, M., and Masila, B. (2020).  Mapping of Quantitative Trait Loci (QTL) Related to Drought Tolerance in Common Bean (Phaseolus vulgaris L.) Using F2 Population from (KATB1 Χ GLP2). International Annals of Science, 8 (1):  75-86,. DOI: https://doi.org/10.21467/ias.8.1.75-86.
  • Kanyange, L. Kamau, J. Ombori, O., Ndayiragije, A., and Muthini, M. (2019). Genotyping for Blast (Pyricularia oryzae) Resistance Genes in F2 Population of Supa Aromatic Rice  (Oryza sativa L.). Internationa journal of Genomics, 2019: 1-10. https://doi.org/10.1155/2019/5246820.
  • Langat ,C., Ombori, O., Leley, P., Karanja, D., Cheruiyot, R., Gathaara, M., and Masila, B. (2019). Genetic variability of Agronomic Traits as Potential Indicators of Drought Tolerance in Common Beans (Phaseolus vulgaris L.). International Journal of Agronomy, 2019: 1-8.  ID 2360848, https://doi.org/10.1155/2019/2360848
  • 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.

Books and Books Chapters

  • Naluyange, V.,   Ochieno, D.M.W., Wandahwa, P.,  Maingi, J.M., Ombori, O.  Mukaminega, M..  Amoding, A.,  Odendo, M. and John V. O. Muoma, J.V.O. (2020). Performance of Mwitemania Bean Under the Influence of Nitrogen-Fixing Rhizobium Inoculant,Water Hyacinth Composts and DAP Fertilizer in a Field Infested with Aphis Fabae and Colletotrichum Lindemuthianum. In:  M. A. Just Enough Nitrogen , Sutton et al. (eds.), Springer Nature https://doi.org/10.1007/978-3-030-58065-0_9
  • Njeru, E. M., Muthini, M., Muindi, M.M.,  Ombori, O., Nchore, S.B. Runo, S. and  Maingi, J.M. 2020).  In: Exploiting Arbuscular Mycorrhizal Fungi-Rhizobia-Legume Symbiosis to Increase Smallholder Farmers’ Crop Production and Resilience Under a Changing Climate. In: Singh B., Safalaoh A., Amuri N., Eik L., Sitaula B., Lal R. (eds) Climate Impacts on Agricultural and Natural Resource Sustainability in Africa. Springer, Cham, Pp 471-488. https://doi.org/10.1007/978-3-030-37537-9_27
  • 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, Ombori, O. and Ngugi, M (2010) Cassava production and limitation of propagation through tissue culture In: Mwangi, M. (Ed.). Contributions of agricultural sciences towards achieving the Millennium Development Goals. Pp 148 – 155. FaCT Publishing, Nairobi, Kenya. ISSN: 978 9966 7415 2 6. FaCT: Publishing online at http://www.m.elewa.org

Conference/Workshops/Seminar Papers

Conference Papers

  • Wahome, C. N., Maingi, J.,Ombori, O and. Mugendi , E.M (2019). Banana cultivar diversity, smallholder production practices and awareness of tissue culture technologies in Kisii, Nyamira and Embu Counties, Kenya. Biennial Conference, 22-26 October, 2019 held Kenyatta University, Nairobi, Kenya
  • 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 Conference held from 17th to 21st October 2016 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.
  • Ogero, K.O; Gitonga, N. M.  Mwangi, M.  Ombori O. and Ngugi, M. (2016). In vitro micropropagation of cassava through low cost tissue culture. The 5th National Science week organized by National Commission for Science, Technology and Innovation, KICC from 16th – 20th May 2016.
  • Nchore, S.B., Waceke, J.W., Buttner, C., Omwoyo, O. and Ulrichs, C. (2016). Efficacy of soil solarization and selected organic amendments for the control of root-knot nematodes in African nightshades. RUFORUM Working Document Series (ISSN 1607-9345) No. 14 (1): 771-777. http://repository.ruforum.org
  • 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.
  • Ogero, K.; Mwangi, M.; Gitonga, N.M.; Ombori, O.; Ngugi, M. (2014). Enhancing farmers’ access to disease-free sweetpotato planting materials through low cost tissue culture for food security and poverty alleviation in Eastern Africa. Agricultural Biosciences International Conference (ABIC): Global Leadership in a Changing World. Saskatoon, Saskatchewan (Canada). 5-8 Oct 2014. http://www.agwest.sk.ca/ABIC2014files/ABIC2014posterWEB.compressed.pdf
  • 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 Mult-stakeholders workshop on Strengthening University Capacity for Promoting, facilitating and teaching Rural Innovation processes held at Egerton University 3rd-8th October 2010.
  • Ombori O., Gitonga M.N., Muoma J., Kiogora D. and Ngugi M. (2010). Cost effective approaches for in vitro mass production of banana (Musa sapientum ) plantlets in Kenya. Proceedings of East African Regional Scientific Conference of Pure and Applied Sciences held at Kenyatta University, Kenya, between 10th-14th august 2010. 
  • Ombori, O, Gitonga, N.M. and Machuka, J. (2008) Agrobacterium-mediated transient gene expression of tropical maize (Zea may) genotypes in Kenya. Proceedings of the 1St Ever all Africa congress on Biotechnology, between 22nd – 26th September 2008, Nairobi, Kenya-
  • Ombori O., Gitonga N.M. and Machuka J. (2006). In vitro regeneration of some Kenyan highland maize hybrids and open pollinated variety from immature embryos by somatic embryogenesis. Proceedings of National Biological Conference held on 25th August 2005, Kenyatta University, Kenya. Sponsored by German Exchange Service (DAAD).

Workshops Papers

  • Ombori, O. and Maingi J. M. (2010). Integration of the elements of IAR4D in low cost tissue culture technology for the micropropagation of bananas. Proceedings of the workshop on Strengthening University Capacity for Promoting, facilitating and teaching Rural Innovation processes held at Jomo Kenyatta University of Agriculture & Technology, Kenya from 14th -20th March 2010.

 Seminar Papers

  • ,Ombori O. (2009). Somatic embryogenesis and Agrobacterium-mediated transformation of selected maize (Zea mays L.) genotypes in Kenya. Ph.D thesis, Kenyatta University, Nairobi, Kenya.

Other Publications

Research Report

  • Exploiting arbuscular mycorrhizal fungi-rhizobia-legume tripartite symbiosis to increase crop production and resilience in semi-arid tropics of Kenya. Funded by Vice-chancellor
  • Participatory Approach in the Production and Acclimatization of Planting Materials and Management of Postharvest Losses of Bananas in Kisii, Nyamiira and Embu Counties, Kenya. Report on the Research Project May 2019. Funded by NRF grant.
  • Participatory Approach in the Production and Acclimatization of Planting Materials and Management of Postharvest Losses of Bananas in Kisii, Nyamira and Embu Counties, Kenya. Report on the Research Project inception workshop held on 2nd and 3rd August 2018 at the Rainbow Ruiru Resort, Kenya. Funded by NRF grant.
  • Nchore, S.B., Waceke, J.W., Buttner, C., Omwoyo, O. and Ulrichs, C. (2016). Efficacy of soil solarization and selected organic amendments for the control of root-knot nematodes in African nightshades. RUFORUM Working Document Series (ISSN 1607-9345) No. 14 (1): 771-777. http://repository.ruforum.org