Détails de la publication

Germination and growth tests of young plants of Kigelia africana (Lam.) Benth. (Bignoniaceae) from different climatic origins in Benin

Détails de la publication

• Type:Article
• Domaine: Production végétale - Génétique
• Année de publication: 2023
• Auteurs: Houetchegnon T., Yamontche C;, Kulga Sourou B. N., Wedjangnon A. A., Ouinsavi C. A. I.
• Cultures: Kigelia africana
• Couverture géographique: Bénin
• Mots clés: Germination rate, sausage tree, juvenile growth, germination pretreatment, West Africa

Résumé de la publication

In southern Benin, more than 20 people buy Kigelia africana organs a day. K. africana is a species classified as vulnerable on the IUCN red list of Benin. In order to contribute to the rational use of the tree because of its importance in Benin, a study of germination and growth tests of young plants of Kigelia africana from different climatic origins in Benin was carried out. The two specific objectives of the study were -i- to test the germination of K. africana seeds from different climatic origins and -ii- to test the effect of pretreatment of these seeds. Thus 360 seeds were sown in pots. The five following treatments with 12 repetitions were done: T0 treatments: control treatments; T1: Seed soaked in water at room temperature for 24 hours; T2: Seed soaked in water at room temperature for 48 hours; T3: Seed soaked in boiling water for 60 seconds; T4: Seed soaked in boiling water until cool. The seed germination trial conducted showed the existence of significant (p ˂ 0.05) differences between provenances in germination rate and seedling growth not only between climatic zones. Hot water inhibited seed germination rate: 0% germination. Seeds from the Sudano-Guinean zone had the best germination rates (75% on average) followed by those from the Sudanian zone (66.67%). The grains of Kigelia africana germinate regardless of the climatic environment. They do not require pregermination treatment.