International Science Community Association International Research Journal of Biological Sciences 2278-3202 11 1 2022 02 10 Effect of seed sources and different presowing treatments on the early growth performance of Plukenetia conophora (P.conophora) 33 39 EN Nnenna Omorodion 1 University of Port Harcourt Department of Microbiology PMB 5323 River state Nigeria Nwatu Ifeanyichukwu 2 University of Port Harcourt Department of Microbiology PMB 5323 River state Nigeria Emmanuel Munyaneza 1 Museum of Environment, Rwanda Cultural Heritage Academy, Rwanda Elias Bizuru 2 University of Rwanda, Rwanda Jérôme Degreef 3 Fédération Wallonie-Bruxelles & Botanic Garden Meise, Belgium Tiwari Saurabh K. 1 Polymer Synthesis & Catalysis Group, Reliance Research and Development Center, Reliance Industries Limited, Navi Mumbai-400701, India Gaikwad Mahadev 2 Germplasm & Cultivation Group, Reliance Research and Development Center, Reliance Industries Limited, Navi Mumbai-400701, India Nagle Vinod 3 Germplasm & Cultivation Group, Reliance Research and Development Center, Reliance Industries Limited, Navi Mumbai-400701, India Dasgupta Santanu 4 Germplasm & Cultivation Group, Reliance Research and Development Center, Reliance Industries Limited, Navi Mumbai-400701, India Gupta Virendrakumar 5 Polymer Synthesis & Catalysis Group, Reliance Research and Development Center, Reliance Industries Limited, Navi Mumbai-400701, India Kalita Pankaj 1 Department of Chemistry, Arya Vidyapeeth College, Guwahati, Assam, India Patro Krishna Raju 1 Regional Plant Resource Centre, Bhubaneswar 751015 Odisha, India Gupta Nibha 2 Regional Plant Resource Centre, Bhubaneswar 751015 Odisha, India K.E. Olasuyi 1 Department of Forestry and Wood Technology, Federal University of Technology, P.M.B 704, Akure, Ondo State, Nigeria O.M. Boboye 2 Department of Forestry and Wood Technology, Federal University of Technology, P.M.B 704, Akure, Ondo State, Nigeria > Research Paper 2021 11 3 2022 02 10 This study evaluated the effect of seed sources and different pre-sowing treatments on the early growth performance of Plukenetia conophora from three different locations in Ondo State, Nigeria. The seeds used for this experiment were collected from three (3) different sources namely; Aba-Oyo (Akure South Local government Area), Owena (Ijesa-Osun LGA) and Ilara-Mokin (Ifedore LGA). The pre-sowing treatments used for this research include control (T1), soaking in cold water for 30 min (T2), 6 hrs (T3) and 24 hrs (T4), boiling in hot water for 20 secs (T5), 40 secs (T6), and 80 secs (T7), soaking in concentrated acid for 5 mins (T8), 10 mins (T9) and 20 mins (T10) were applied across all the seed sources under this experiment. Therefore, this experiment was performed in a Randomized Completely Blocked Designed (RCBD). Across all the different pre-sowing treatments used for this experiment, analysis of variance revealed the highest mean germination percentage value in the seeds pretreated for 20 minutes (T10) concentrated H2S04 (77.78%) followed by the seeds pretreated for 5 minutes (T8) concentrated H2S04 (68.89%) while the seeds soaked in cold water at thirty (30) minutes (T2) had a closer mean germination percentage value (62.22%) to T8. Finally, the lowest mean germination percentage value was seen in the seeds boiled in hot water at 80 seconds (T7) with no germination percentage value (0%) in Table-2. For increase in productivity and germination percentage. This study, therefore, recommends that P.conophora seeds be soaked in concentrated sulphuric acid for 20 minutes. Copyright@ International Science Community Association