7 research outputs found
EVALUATION DE LA TOXICITÉ AIGUË DE L’EXTRAIT AQUEUX DES FEUILLES DE THUNBERGIA ATACORENSIS, UNE ESPÈCE NOUVELLE
No full textThunbergia atacorensis is a new plant species, discovered in gallery forest of Atacora Province in Benin (West Africa). This beautiful shrub can be used as ornamental. Before introducing the plant in human environment, it will be necessary to know its toxicological parameters. This work was aimed to evaluate, in mice, the acute toxicity at different doses of the aqueous decoction of the plant leaves in order to prevent intoxication. The acute toxicity of leaves aqueous decoction from the plant was assessed after a process which consisted in giving orally, to mice, the crude decoction for increasing doses ranging from 900 to 4500 mg/kg of body weight (b.w.). The use of the plant extract, through oral route (or), at different doses, causes some clinical signs (agitations, poor appetite, motor difficulties and dyspnea). The results made it possible to obtain the dose at bordering on solubility which squares with the Letal Dose of 100% or LD100 (4500 mg/kg/b.w./or). The Tolerated Maximal Dose or TMD was evaluated at 900 mg/kg/b.w./or. The plant extract, administered orally, provided slight toxicity, with a LD50 of 1720.25 mg/kg/b.w./or. Thus, the experimentally found Letal Dose of 50% can justify the domestication of the plant as ornamental
Etude Socio-Économique De L’exploitation Des Plantes Fourragères Dans Le District d’Abidjan (Côte d’Ivoire)
No full textForage trading in the city of Abidjan is an activity not known by the population. The objective of the study was to determine the importance of the collection of forage plants in the socio-economic life of the actors of the sector. Prospects and semi-structured interviews were conducted, and we determined the floristic composition of forages sold in the market. The results of the survey show that the forage sold by the farmers is taken free of charge in the city of Abidjan. The unit price (UP) of a bundle of forage is on an average of 50 FCFA when there are few animals on the market, and 100 FCFA or 200 FCFA in case of high affluence such as during holidays. Thus, the estimated average financial income per day of an operator during periods of low affluence of animals in the markets is 875 F CFA. On an average, it is 26250 FCFA per month and 3350 FCFA per day. Also, there is an estimated average of 100 400 FCFA in periods of abundance of animals for sale in the market. The results of investigations showed that forages species sold are composed of species such as Chloris pilosa Schumach. (Poaceae), Panicum maximum Jacq (Poaceae), Brachiaria lata (Schumach.) Hub (Poaceae), Arachis hypogea L. (Fabaceae), and Phaseolus vulgaris L (Fabaceae). In addition to being food reserves, these activities provide work for those who exploit them. It allows them to meet their daily needs and also compensate for the lack of jobs
Diversity and socio-economic aspects of toothpicks plant species in Abidjan district markets (Côte d'Ivoire, Africa)
No full textA study on the diversity of plant species used as toothpick in the markets of the Abidjan District (Côte d'Ivoire) was performed. The aim of the study was to contribute to the sustainable management of plant resources used in the form of toothpicks to resolve oral hygiene problems and other pathologies encountered in Côte d'Ivoire. During the fieldwork in the study site, an ethnobotanical survey has been realized using a pre-established questionnaire, involving 150 people at markets in three communes in Abidjan district (Adjamé, Abobo and Yopougon). The study identified 45 species belonging to 43 genera and 18 families. The Fabaceae family is the most represented. The most used species are Parinari curatellifolia (Chrysobalanaceae) and Croton pseudopulchellus (Euphorbiaceae). The Shannon index values calculated show a variation in the diversity of species used in the form of toothpick depending on the municipalities (F = 71.19; P < 0.001). These toothpicks, used in the treatment of oral and dental disorders, erectile dysfunction and hypersalivation during pregnancy, are sold mainly by women. Many species used as toothpicks have been classified as “Least Concern” and “Vulnerable” by the IUCN. The most commonly used organ is the root (80%). The cost of these toothpicks varies from 0.04 to 0.83 $USD, making them accessible to all. It is therefore important to raise awareness of how these toothpick species are harvested, in order to prevent their disappearance
Diversite Floristique des Plantes à Potentialité Décorative Issues des Formations Naturelles du Nord de la Côte d’Ivoire
No full textThis study carried out in the Sudanese field of Côte d'Ivoire aims to contribute to the safeguarding of Ivorian flora through the valorization of plants with decorative potentiality of the North of Côte d'Ivoire. The inventory method used is the roaming survey. It consisted of walking in different directions around large cities with different backgrounds and listing all the plant species with decorative potential encountered, regardless of their size. These species have been analyzed at the National Center for Floristics (NCF). These surveys allowed usto collect 287 plant species divided between 220 genera and 79 botanical families, with a predominance of herbs. The most abundant families are Fabaceae, Apocynaceae and Acanthaceae. Of these species, 73.5% are Phanerophytes and 0.3% epiphytes. Also, an Ivorian endemic species (GCI) Cyphostemma ornatum A.Chev. exHutch. & Dalziel (Vitaceae) was also enumerated. Thirteen species or 4.52% are considered introduced species (i). At the ecological level, hydrophytic species and the species like Senna podocarpus Guill. & Perr. (Fabaceae) which is a hardy plant has been inventoried. These results show a great decorative floristic richness in the Sudanian field. This work contributed to the knowledge of the composition and the diversity of the plants with decorative potentiality of the Sudanese field of Côte d'Ivoire.Cette étude réalisée dans le domaine soudanais de la Côte d’Ivoire a pour objectif de contribuer à la sauvegarde de la flore ivoirienne à travers la valorisation des plantes à potentialité décorative du Nord de la Côte d’Ivoire. La méthode d’inventaire utilisée est le relevé itinérant. Elle a consisté à parcourir dans différentes directions autour des grandes villes ayant différents milieux et à recenser toutes les espèces végétales à potentialité décorative rencontrées, sans tenir compte de leur taille. Ces espèces ont été analysées au Centre National de Floristique (CNF). Ces relevés nous ont permis de récolter 287 espèces végétales réparties entre 220 genres et 79 familles botaniques, avec une prédominance des herbes. Les familles les plus abondantes sont celles des Fabaceae, des Apocynaceae et des Acanthaceae. Parmi ces espèces, 73,5 % sont des Phanérophytes et 0,3 % des épiphytes. Aussi, une espèce endémique ivoirienne (GCI) Cyphostemma ornatum A.Chev. exHutch. & Dalziel (Vitaceae) a été également recensée. Treize espèces soit 4,52% sont considérées comme espèces introduites (i). Au niveau écologique, des espèces hydrophytes et l’espèce comme Senna podocarpus Guill. &Perr. (Fabaceae) qui est une des plantes rustiques a été inventoriée. Ces résultats montrent une grande richesse floristique décorative dans le domaine soudanien. Ces travaux ont contribué à la connaissance de la composition et de la diversité des plantes à potentialité décorative du domaine soudanais de la Côte d’Ivoire
Etude de la diversité, de l'endémisme et de la distribution spatiale des Rubiaceae de Côte d'Ivoire
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Domestication De Thunbergia Atacorensis Akoegninou & Lisowski (Acanthaceae) : Effet Du Type De Substrat Et Du Mode D’eclairement Sur L’aptitude A La Reprise Vegetative Des Boutures Et La Croissance Des Plants
No full textWe studied the possibility of producing seedlings of Thunbergia atacorensis (Acanthaceae) starting from cuttings under controlled cultivation conditions during 3 months. The objective of this work is to determine the optimal conditions for seedling production Thunbergia atacorensis by vegetative reproduction to allow its extension from professional growers and amateur (consumers). The study consisted to analyze their effect the plant growth, seedlings development, and leaves production. At the end the study, we obtained a rate of 91p.c for vegetative recovery for the cutting in shade 97p.c. for the cutting exposing to sun. However, the cuttings exposed sun clearly dissociates cuttings exposed to the shade with a shorter time of recovery. At the end of 3 months, only the sunny seedlings survive despite of the recovery rate of recovery. The study showed that the four environmental factors, the mode of exposure (sun and shade) and time (weeks) have a significant influence on the height and the number of seedlings leaves. The highest seedlings are observed in the shade from weeks 1 to 3. From week 3, only the sunny seedlings continue their growth and their development. The variation of the substrate and the frequency of watering, meanwhile, had no significant influence on the height and number of leaves. In sum, despite of lack of flowering, to produce seedlings of Thunbergia atacorensis, one should initially carry out the propagation by cutting in the shade and then to gradually intensify the light to have well developed seedlings
THE PRESENT STATE OF BOTANICAL INVESTIGATIONS IN CÔTE D’IVOIRE
No full textThe aim of this present study is to summarize the current state of research on the flora of the Côte d’Ivoire from the SIG IVOIRE database to better direct future collection efforts. Herbarium specimen data used for this study covered the period from 1894 to 2000, and were assembled by 226 collectors. This database comprises 15,228 samples, grouped in 3621 species, 1371 genera, and 198 families. A grid system was used to cover the Ivorian territory at spatial resolution of 0.75° x 0.75°. Indices of evenness and completeness were calculated to characterize sampling and identify floristically well-known regions. The exploration of the Ivorian territory is far from uniform, such that some areas were more densely surveyed, but others partially or not at all. The regions of Grands Ponts, Agnéby-Tiassa, Loh-Djiboua, part of Gbèkè, Boukani, San Pedro and Cavally were floristically well known; environmentally, the largest gaps in coverge were in the mountains in western Côte d\u27Ivoire
