Restoration of rooting competence in mature Faidherbia albida, a Sahelian leguminous tree, through serial root sucker micrografting

Danthu Pascal, Hane B., Sagna P., Gassama Dia Yaye Kène. 2002. Restoration of rooting competence in mature Faidherbia albida, a Sahelian leguminous tree, through serial root sucker micrografting. New Forests, 24 : 239-244.

https://doi.org/10.1023/A:1021396814374

Article de revue ; Article de revue à facteur d'impact

Version publiée - Anglais
Accès réservé aux personnels Cirad
Utilisation soumise à autorisation de l'auteur ou du Cirad.
513522.pdf
Télécharger (70kB) | Demander une copie

Résumé : Faidherbia albida is an essential leguminous tree of and areas of Africa which is widely used in agroforestry. This species naturally produces root suckers. Their morphogenetic ability has been used to initiate a rejuvenation / reinvigoration process in mature subjects. The proposed method contains two stages. The first stage generates the first ramets: our results have shown that suckers picked from root cuttings are more vigorous than explants taken directly from the crown of adult subjects. The second stage furthers the rejuvenation process through cycles of repeated micrografting onto juvenile rootstock, which have been grown in vitro. As early as the third cycle, a significant increase in reactivity is gained. This is determined by growth of the scion and the rooting competence of microcuttings severed from the scions after each micrografting cycle. At that point, the rooting competence is completely restored. So, this sequential method, (i) suckers from root cuttings, (ii) repeated micrografting, seems valid as a technique for the restoration of rooting competence in mature F. albida with a view to its cloning.

Mots-clés Agrovoc : Faidherbia albida, enracinement, bouture

Mots-clés géographiques Agrovoc : Sahel

Classification Agris : F02 - Multiplication végétative des plantes

Auteurs et affiliations