Phaseolus lunatus is a legume rich in protein and essential amino acids, with a notable morphological diversity that influences its floral phenology. The aim of this study was to evaluate the flowering period of four morphotypes and to determine the duration of flower opening. The experiments were carried out at the Université Jean Lorougnon Guédé in Daloa, Côte d’Ivoire. The experimental set-up used was a complete block with 10 plants per morphotype. The results revealed significant variability between morphotypes. Morphotype 3 showed early flowering (79 days), while morphotype 2 was the latest (137 days). Analysis of floral morphology using an optical microscope revealed significant differences between morphotypes in terms of the number of flowers opened and aborted. This study underlines the importance of understanding floral phenology for optimizing P. lunatus production and guiding varietal selection. The variability observed highlights the potential for genetic improvement, in order to develop better-performing varieties that are better adapted to changing climatic conditions.

Khaya senegalensis is a widely exploited forest species in Ivory Coast. This natural resource is listed on the IUCN Red List. Its efficient management requires the collection of information on its growth and development in standby. This study analysis the structural characteristics of natural stands with a view to providing information necessary for the preservation and sustainable management of Khaya senegalensis in Ivory Coast. To do this, floristic inventories were carried out in eight localities of its natural range. Dendrometric measurements were made on individuals with a diameter greater than or equal to 5 cm at a height of 1,30 m from the ground. A count of individuals with diameters less than 5 cm at a height of 1,30 m from the ground was made to assess the potential for natural regeneration. The results reveal a low overall density ranging from 3 to 10 trees per hectare. The highest density is represented in the northwest in Odienné. Also the largest diameters (50,36 cm on average) were observed in Odienné. The average total height (17,36 m) and the average height of the bole (7,50 m), the highest were also obtained in the northwest in Touba. Vertical and horizontal stand structures reveal an abundance of young individuals. Stands are subject to various human pressures (debarking, pruning, cutting) resulting in poor regeneration of the species in its natural habitat.