Agritrop
Home

Effect of the seeds provenance and treatment on the germination rate and plants growth of four forest trees species of Côte d'Ivoire

Akaffou Doffou Sélastique, Kouassi Kouame Aimé, Bi Boh Gore Nestor, Yao Abessika Georges, Kouadio Kouassi Henri, Hamon Perla, Sabatier Sylvie-Annabel, Duminil Jérôme. 2019. Effect of the seeds provenance and treatment on the germination rate and plants growth of four forest trees species of Côte d'Ivoire. Journal of Forestry Research, 11 p.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
[img] Published version - Anglais
Access restricted to CIRAD agents
Use under authorization by the author or CIRAD.
10.1007_s11676-019-01064-y.pdf

Télécharger (1MB) | Request a copy

Quartile : Q2, Sujet : FORESTRY

Abstract : The rapid rate of deforestation in Côte 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, Akoupé 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.

Mots-clés Agrovoc : Traitement des semences, Provenance, Faculté germinative des semences, Croissance, Arbre forestier, santé des forêts, État de la plante, Terminalia superba, Mansonia altissima

Mots-clés géographiques Agrovoc : Côte d'Ivoire

Mots-clés complémentaires : Pycnanthus angolensis, Pterygota macrocarpa

Mots-clés libres : Forest tree, Seed germination, Plant growth, Provenance, Côte d'Ivoire

Classification Agris : K01 - Forestry - General aspects
F03 - Seed production
F62 - Plant physiology - Growth and development

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Auteurs et affiliations

  • Akaffou Doffou Sélastique, Université Jean Lorougnon Guédé (CIV) - auteur correspondant
  • Kouassi Kouame Aimé, Université Jean Lorougnon Guédé (CIV)
  • Bi Boh Gore Nestor, Université Jean Lorougnon Guédé (CIV)
  • Yao Abessika Georges, Université Jean Lorougnon Guédé (CIV)
  • Kouadio Kouassi Henri, Université Jean Lorougnon Guédé (CIV)
  • Hamon Perla, Université Jean Lorougnon Guédé (CIV)
  • Sabatier Sylvie-Annabel, CIRAD-BIOS-UMR AMAP (FRA)
  • Duminil Jérôme, IRD (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/594240/)

View Item (staff only) View Item (staff only)

[ Page générée et mise en cache le 2020-10-03 ]