Akaffou S. D. auteur aut IRD Kouame A. K. auteur aut IRD Gore N. B. B. auteur aut IRD Abessika G. Y. auteur aut IRD Kouassi H. K. auteur aut IRD Hamon Perla auteur aut IRD Sabatier S. auteur aut IRD Duminil Jérôme auteur aut IRD text journalArticle eng text/pdf born digital access The rapid rate of deforestation in Cote d'Ivoire has led to loss of plant species diversity and also threatens some commercial tree species with extinction. Some reforestation and afforestation has been completed. However, for some species, the numbers of surviving transplants has declined. Hence, it is necessary to develop properly adapted and resilient genotypes that can effectively support the programs of forest restoration. In this context we evaluated the effects of the provenances of seeds and of various treatments on the germination rates and on plant growth of four commercial trees species (Pycnanthus angolensis, Terminalia superba, Mansonia altissima and Pterygota macrocarpa). We analyzed these parameters for seeds of three provenances (Daloa, Akoupe and Daoukro) of four species and for thirty plants aged 6 months per provenance. Time to begin germination and time to reach maximum germination were similar among species, and were not influenced by either treatment or provenance. Untreated seeds and those soaked for 24 and 48 h in water at room temperature yielded the highest germination rates, irrespective of species or provenance. The one exception was P. angolensis, for which no germination was recorded. Within species, some provenances produced higher germination percentages than did others. No clear relationship was computed between the germination rate and the morphometric characteristics of the seeds which varied significantly between provenances. Plant growth and morphological variability also depended greatly on provenance. Genetic factors might be implicated, therefore provenance trials should be undertaken and evaluated. Furthermore, molecular analysis should be undertaken to confirm the implications of genetic factors and allow for genetic selection. specialized Forest trees Seed germination Plant growth Provenance Cote d'Ivoire COTE D'IVOIRE 082 076 32 1 161-169 2021 1007-662X https://www.documentation.ird.fr/hor/fdi:010077186 10.1007/s11676-019-01064-y 1007-662X [F B010077186] https://www.documentation.ird.fr/hor/fdi:010077186 https://www.documentation.ird.fr/intranet/publi/2019/11/010077186.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2019-12-12 2025-02-24 fdi:010077186 fre