Adji B. I., Letort V., Wang X. J., Kang M. Z., De Reffye P., Jaeger M., Cilas C., Kouassi K. H., Duminil Jérôme, Sabatier S., Akaffou D. S. (2023). Rethinking iconic species reforestation in West Africa : seed shape harnessing is strategic for enhanced germination and vigorous growth in Khaya senegalensis and Parkia biglobosa. Forests, 14 (7), p. 1311 [18 p.].
Titre du document
Rethinking iconic species reforestation in West Africa : seed shape harnessing is strategic for enhanced germination and vigorous growth in Khaya senegalensis and Parkia biglobosa
Année de publication
2023
Auteurs
Adji B. I., Letort V., Wang X. J., Kang M. Z., De Reffye P., Jaeger M., Cilas C., Kouassi K. H., Duminil Jérôme, Sabatier S., Akaffou D. S.
Source
Forests, 2023,
14 (7), p. 1311 [18 p.]
Seed size is a critical factor that can impact the regeneration process of plant populations. The objective of this study is to identify optimal seeds for the cultivation of two overexploited native forest species in Cote d'Ivoire, namely Khaya senegalensis (Desr.) A.Juss., 1830 and Parkia biglobosa (Jacq.) R.BR. ex G. Don, 1830. A total of 1080 seeds per species were evaluated for germination and seedling vigour in two distinct environments (dry and humid) in Cote d'Ivoire. The results demonstrated that, for Khaya senegalensis, larger seeds exhibited higher germination rates, whereas for Parkia biglobosa, smaller and medium-sized seeds showed better germination performance. However, regardless of species and study site, larger seeds consistently produced more vigorous seedlings. In this case, pretreatment tests on large seeds of Parkia biglobosa can potentially enhance their germination performance. Large seeds, ranging from 0.25-0.37 g in Khaya senegalensis and 0.2-0.32 g in Parkia biglobosa, appear to be the most suitable and best candidates for high-quality, high-performance seeds to optimise the cultivation of these species in Cote d'Ivoire. Distributing such seeds to farmers can contribute to the success of reforestation and agroforestry programs involving these target species in Cote d'Ivoire. These findings contribute to the sustainable management of the target species and can serve as a basis for restructuring forest regeneration policies in Cote d'Ivoire.
Plan de classement
Sciences du monde végétal [076]
;
Etudes, transformation, conservation du milieu naturel [082]
Description Géographique
COTE D'IVOIRE
Localisation
Fonds IRD [F B010090040]
Identifiant IRD
fdi:010090040
