Study of the floral phenology of Dacryodes edulis in the Republic of Congo

Abstract Dacryodes edulis (G. Don) HJ Lam. is a fruit tree producing edible fruits called safou. Floral phenology is described while situating it in time, in relation to temperature. And illumination. For this, 10 feet are selected in the surroundings of the city of Brazzaville. The qualitative and quantitative characters of the flowers are observed, in order to identify their phenophases. There Flowering lasts 38 days and includes three stages, the initiated flower, the flower bud and the bloomed flower which have lengths respectively 3.52 mm ; 4.742 mm and 5.569 mm. Temperature and lighting positively influence the elongation of the flower. Geographic orientation in relation to sunset and at sunrise does not influence the elongation of the flower.