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Abstract
Khaya senegalensis is one of the largest and most majestic trees in Africa. Overexploited for its precious wood and medicinal values, the natural stands of this species are in danger of extinction in Cote d’Ivoire. Its sustainable management through regeneration techniques and assessment of its degree of adaptation to the changing climate is necessary. The aim of this study is to evaluate the effect of different environments on seedling germination and development in Khaya senegalensis. A total of 2160 seeds from different mother plants and 540 individuals from seed germination were selected and evaluated. The trials were conducted on three sites that were distinct by their microclimate (two nurseries in Cote d’Ivoire and one greenhouse in France). Analysis of variance showed that germination and morphology parameters were not influenced by the characteristics of the mother plants used (p > 0.05), but rather by the study sites (P Khaya senegalensis. This study could be extended to other species in order to restore disturbed ecosystems.
Highlights
Forests play an important role in maintaining plant genetic resources, soil conservation, watershed stability, etc. [1]-[7]
The aim of this study is to evaluate the effect of different environments on seedling germination and development in Khaya senegalensis
Germination of Khaya senegalensis is hypogeous with a long epicotyl reaching on average 6.33 cm long and 1.2 mm in average diameter at the collar (approximately 15 days after semi and five (5) days after the appearance of the coleoptile and radicle)
Summary
Forests play an important role in maintaining plant genetic resources, soil conservation, watershed stability, etc. [1]-[7]. In Africa, forests occupy almost 650 million hectares and provide foreign exchange and ecosystem services that meet the needs of local populations [8]-[13]. Species whose economic and socio-cultural activity plays a key role in meeting human health needs are the most threatened [14] [19] [20] [21]. In West Africa, access, exploitation and sustainable management of plant resources are a major issue for rural populations [22]. Sustainable management of forest resources means the management and use of forests and wooded areas in such a way and at such an intensity that they maintain their biological diversity, productivity, regeneration capacity, vitality and ability to satisfy, and in the future, relevant ecological, economic and social functions at local, national and global levels, and that they do not cause damage to other ecosystems [23]. Controlling the regeneration of local woody species remains the keystone of sustainable strategic management of arid and semi-arid vegetation types in West Africa [24]
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