RELEVANT PUBLICATIONS:

1. Ogunniyan, D.J., Olakojo, O.O, Olowolafe, M.O. and Ogunruku, B.O. (2020) Estimation of genetic parameters in agronomic characters and maturity index of sugarcane (Saccharum spp). Journal of Tropical Agriculture 58 (2): 147-157. 

2. Ogunniyan, D.J., J.A. Adetumbi, J.O. Olasoji and S.A. Makinde (2021) The variability of grain yield, seed morphometric and vigour traits of early maturing hybrid maize. Journal of Agricultural Sciences. 66(2): 105-119.

3. Ogunniyan, D.J., Olakojo, O.O., Akinyosoye, S.T. and Makinde, S.A. (2021) Analysis of grain yield of early-maturing yellow-endosperm maize hybrids under nitrogen stress and optimal conditions using AMMI biplot. International Journal of Plant Breeding and Genetics 15: 24-33.

4. Ogunniyan, D.J., Olasoji, J.O. and Aderiye, K.O.S. (2021) Genetic analysis of seed morphometric of yellow kernel single cross hybrid maize. Ife Journal of Agriculture 33(2): 86-104.

5. Olakojo, O., Bankole, F. and Ogunniyan, D.J.  (2021) Correlation, regression and cluster analyses on yield attributes and popping characteristics of popcorn (Zea mays L. Everta) in derived savanna and rainforest agro-ecologies of Nigeria. Acta agriculturae Slovenica 117(3): 1–11.

6. Aderiye, K.O.S., Kehinde, T.O., Adetumbi, J.A., Ogunniyan, D.J. and Adebisi, M.O. (2021) Response of groundnut (Arachis hypogaea L.) genotypes to accelerated ageing treatment. Notulae Scientia Biologicae, 13(1): 10833. doi:10.15835/nsb13110833.

7. Adetumbi, J.A., Ogunniyan, D.J., Ajijola, S., Oyegbami, A. and Adeniyan, O. N. (2022) The appropriate planting time for the profitable production of the quality seed of kenaf (Hibiscus canabinus L.) in Southwestern Nigeria. Journal of Agricultural Sciences 67(3): 253-267.

8. Ogunniyan, D. J., Adeniyan, O.N. and Makinde, S.A. (2022) Multi-locational evaluation of fibres yields of kenaf (Hibiscus cannabinus L.) genotypes in Nigeria. Journal of Forestry, Agriculture and the Social Sciences 20(1): 113-124. (Nigeria).

9. Ogunniyan, D.J., Akintunde, A.T. and Anjorin, F.B. (2022) Estimation of combining abilities of tropical and exotic maize inbred lines in diverse environments. Moor Journal of Agricultural Research 23: 28-41. (Nigeria).

10. Ogunniyan, D. J. and Makinde, S.A.  (2023) Stability analysis of kenaf (Hibiscus cannabinus L.) fibres yields using GGE bi-plots. Bangladesh Journal of Agricultural Research 48(1): 101-114. (Bangladesh).

11. Atta, A.T. and Ogunniyan, D. J. (2024). Evaluation of Kenaf (Hibiscus Cannabinus L.) genotypes for agronomic performance and fibre industrial quality. International Journal of Agricultural Technology 20(1):15-24.

12. Olakojo, O., Ogunniyan, D., Aboderin, O., and Olaoye, G. (2024). Heterotic response of single-cross popcorn hybrids for yield and popping quality across diverse agro-ecological zones in Nigeria. Peruvian Journal of Agronomy, 8(3): 198-209.

13. Lawal, I., Alake, C., Porbeni, J., Olorunmaiye, P., Oyetunde, O. and Ogunniyan, D. (2025) Studies on heritability and character relationship in soybean (Glycine max L. Merrill) genotypes grown in two contrasting environments. Journal of Genetics, Genomics and Plant Breeding 9: 8–13. https://doi.org/10.63551/jggpb.vol.9.issue01.003.

14. Olakojo, O.O., Ogunniyan, D.J., A.T. Akintunde and S.A. Olakojo (2025) Combining ability for grain yield and popping expansion in popcorn (Zea mays L. Everta) hybrids. Turkish Journal of Agriculture - Food Science and Technology 13(8): 2111-2118.

Edited Conference Proceedings

15. Akintunde, A.T., Ogunniyan, D.J. and Aderiye, K.O.S. (2021) Assessment of groundnut (Arachis hypogaea L.) accessions for seed yield. Proceedings of 6th Annual Conference of Association Seed Science of Nigeria. Taiwo, L.B., J.A. Adetumbi, D.J. Ogunniyan & K.T. Kareem (eds.) Institute of Agricultural Research & Training, Obafemi Awolowo University, Ibadan. 3rd - 6th August 2021. pp. 92-97.

16. Makinde, S.A. and Ogunniyan, D.J. (2021) Relationship between vegetative and yield contributing characters in kenaf (Hibiscus cannabinus L.) accessions. Proceedings of 6th Annual Conference of Association Seed Science of Nigeria. Taiwo, L.B., J.A. Adetumbi, D.J. Ogunniyan & K.T. Kareem (eds.) Institute of Agricultural Research & Training, Obafemi Awolowo University, Ibadan. 3rd - 6th August 2021. pp. 108-112.

17. Akintunde, A.T., Oladipo, M.S., Odumuyiwa, O.E. and Ogunniyan, D.J. (2024) A Review of Genetic improvement of kenaf for fibres and seeds in Sub-Saharan Africa. Proceedings of the 2024 International Conference on Kenaf, Jute, and Allied Crops (Akinbode, O.A., Ayodele, O.P., Kareem, K.T., Adeniyan, O.N., Adetumbi, J.A. and Ajijola, S. eds.), held at the Institute of Agricultural Research and Training (IAR&T), Ibadan, Nigeria. July 23–26, 2024. pp. 22-37.

18. Atta, A.T., Owolarafe, O.K., Omotosho, O.A., Yahaya, A.I. and Ogunniyan, D.J. (2024) Performance Evaluation of a Self-Propelled Kenaf Harvester. Proceedings of the 2024 International Conference on Kenaf, Jute, and Allied Crops (Akinbode, O.A., Ayodele, O.P., Kareem, K.T., Adeniyan, O.N., Adetumbi, J.A. and Ajijola, S. eds.), held at the Institute of Agricultural Research and Training (IAR&T), Ibadan, Nigeria. July 23–26, 2024. pp. 117-125.

19. Odumuyiwa, O.E., Adesuyi, A.A., Adeyemi, I.A. and Ogunniyan, D.J. (2024) Prospects, Production and challenges of kenaf in Sub-Saharan Africa: A Review. Proceedings of the 2024 International Conference on Kenaf, Jute, and Allied Crops (Akinbode, O.A., Ayodele, O.P., Kareem, K.T., Adeniyan, O.N., Adetumbi, J.A. and Ajijola, S. eds.), held at the Institute of Agricultural Research and Training (IAR&T), Ibadan, Nigeria. July 23–26, 2024. pp. 146-161.

20. Fafemi, T.O., Sheu, H.T., Ogunniyan, D.J. and Akinyosoye, S.T. (2025) Principal Component Analysis of agronomic Traits of Soybean [Glycine max (L.)] genotypes. Proceedings of 47th Annual Conference of the Genetic Society of Nigeria. In: P.O. Akporhuarho, O.S. Egbule., U.G. Sorhue, F.O. Nwachi and C.N. Ossai (eds.) delta State University, Abraka, Delta State. pp: 232-240.

Research Interest: 

     Over the years, my research interest has generally been in Crop Science with specific focus on genetic resources conservation and use, breeding for high crop yield, tolerance to nutrient and water stress conditions; seed agronomy and quality assurance, as well as conservation, promotion and utilization neglected crops Technological Achievements: Development and release, in collaboration with other scientists, of promising crop varieties including one high fibre yielding kenaf variety for adoption by famers and industrialists, and seven high grain yielding and adaptable hybrid maize varieties for use by farmers and seed companies in Nigeria Current Research Activities: I am currently working on the development of high grain yielding, nutrient rich and climate smart maize varieties, and adaptable high grain yielding and high popping quality popcorn varieties. Besides, I work with farmers across Nigeria on a long neglected multi-purpose crop (kenaf, Hibiscus cannabinus L.) capable of generating earnings for both small scale and large scale farmers and investors. I also currently engage in the improvement of roselle for high calyx yield. My research includes improvement of the crops’ seed yield and quality too 

On-Going Research Projects: 

1. Improvement of popcorn for high grain yield and popping characteristics 

2. Genetic improvement of roselle for high calyx yield and nutritional quality ORCID: https://orcid.org/0000-0003-1335-6949