Tropicultura (Jan 2009)
Les glomales indigènes de la forêt claire à Isoberlinia doka (Craib et Stapf) à Wari-Maro au centre du Bénin
Abstract
Indigenous Glomales of Isoberlinia doka (Craib and Stapf) Woodland of Wari-Maro in Centre of Benin. This study described the indigenous glomalean diversity in Isoberlinia doka (Craib et Stapf) woodland of Wari-Maro for an amelioration of seedling for revegetation. To this end, the trap culture with Zea mays was undertaken using a 16 replicates and 7 treatments completely randomized design under greenhouse. The data obtained were calculated and statistically treated, at 5% of significance, and showed that the maxima of mycorrhizal root colonization and the number of spores were scored in soil under cultures. Six species of glomalean spores divided in 2 genera (Glomus and Scutellospora), 2 families (Glomaceae and Gigasporaceae) were counted and identified all around the forest. Scutellospora gregaria (46.6%, 54.2%, 46.6%) and Glomus aggregatum (52.3; 44.4%; 43.9%) respectively in forest, field and fallow are the two most prevalent species in the rhizosphere of Isoberlinia doka. The Shannon specific index of diversity and the equitability of Pielou indicated that the lowest values are obtained at Wari-Maro on fallow and highest one at Agbassa (fields and fallow). In conclusion, the best seedlings production sites of Isoberlinia doka are in Agbassa on fallow and in the fields.
