Cleome gynandra L., known as kenebdo in Burkina Faso is an important traditional leafy vegetable for nutritional supplement meant to populations in Burkina Faso where many people, especially children, are suffering from chronic malnutrition. Indeed, due to its high nutritional value, it is a good food supplement in providing nutritional and medicinal needs. This study aims at identifying varieties of interest according to climatic zones of Burkina Faso for varietal improvement of species through multi-local evaluations of a collection of C. gynandra. 36 accessions were basically collected in 12 provinces of Burkina Faso and used as plant material. Experiments were conducted in three sites located in the three climatic zones of Burkina Faso. They were conducted during rainy season using a Fischer block design with three replications. Measurements and observations were made on 16 variables, such as 4 qualitative and 12 quantitative variables. The study revealed great agromorphological variability within the accessions with significant different performances according to the three climatic zones. It also showed significant interaction between accessions and experimental sites for most of the variables. In general, the best agronomic performances were observed in Bobo Dioulasso followed by Ouagadougou while the low performances were recorded in Dori. For each climatic zone, a set of 10 accessions were identified as genotypes of interest that could be used for varietal improvement of C. gynandra in Burkina Faso.

Hibiscus sabdariffa commonly known as roselle is a species widely used in Burkina Faso. The objective of this study is to contribute to a better knowledge of the species. Specifically, it is to (i) draw up an inventory of local knowledge about the plant and (ii) to identify modes of management of the plant by farmers in Burkina Faso. An investigation was carried out through semi-structured interviews in six provinces in Western area of Burkina Faso. Informations such as: vernacular names, cultivation practices, method of obtaining and saving seeds, cultivation periods and uses of the plant are listing. In total, 179 farmers from 13 ethnical groups were interviewed. About 34 vernacular names were recorded according to these ethnic groups. To describe local varieties, farmers use morphological traits such as the color and size of plant and shape of calyxes. On this basis, two local varieties were described on the basis of the color of the plant, two on the basis of shape of calyxes and two on the basis of the size of plant. Leaves, calyxes and seeds are used as food for local populations and marketing of seeds, leaves and calyxes and their derived products constitutes a significant source of incomes for producers.

Cowpea, Vigna unguiculata [L] Walp, is one of the most important grain legume grown in all arid and semi-arid regions of Africa. It contributes to reduce malnutrition and poverty and to achieve food security as well. However, cowpea production is hampered by many biotic and abiotic stresses which include viral diseases. Cowpea mosaic caused by CABMV is the main viral disease of cowpea in Africa. This study aims to determine the CABMV transmission rates through seeds describe the reaction of different cowpea genotypes to the virus and identify sources of resistance to serotype D of CABMV. A variation of seed born transmission of CABMV from 3% to 100% was observed for the varieties B301 and Kvu150. Inoculation of cowpea seedling with CABMV results in pods drop leading to yield loss. A negative correlation (r = - 0.33) was observed between date of onset of symptoms and hundred grains weight. The severity of symptoms varied from one cultivar to another. Thus, the best genotypes were those who had better production namely Kvx780-4 SH (28.08 g), Kvx780-3 (21.52 g), Kvx780-9 (20.31 g) and Gourgou (20, 02 g).

Forty-one (41) accessions of the jute potager (Corchorus olitorius L.) collected in Burkina Faso were evaluated on July 2014 with twenty-five (25) characters according to a Latinized Apha-Plan. The global objective of this study is to contribute to a better knowledge of the agromorphological diversity of C olitorus of Burkina Faso. The study revealed that 75,61% of the accessions studied belong to C olitorius var olitoriu L. variety and 24,39% belong to C olitorius var incisifolius Asch.& Schw variety. It showed indeed that several characters discriminate the accessions at 1%. The study of the structuring of diversity revealed three groups of accessions on the basis of the plant height, stem diameter, width of leaf and leafy biomass. Thus, the group I is constituted of big size accessions with robust stem, high leafy biomass and thin fruits. The Group II is constituted of individuals with performances relatively low. The Group III is a mixed group constituted with 65% C olitorius var clitoris L. and 35% of C olitorius var incisifolius Asch. & Schw. This group is made up of individuals with reduced size, with weak leafy and big fruits.

The objective of this study is to contribute to a better knowledge of the agromorphological diversity of Cleome gynandra L. of the West of Burkina Faso. Hundred accessions, collected in the vegetable gardens and the natural populations of the sahelo-soudan zone and the soudan zone of Burkina Faso, was evaluated according to a Latinized Alpha-Plan design. Observations and Biometrical measurements were carried on 23 variables. The study revealed a great agromorphological variability within the accessions from the vegetable gardens and those collected in the natural populations. 17 characters - 11 quantitatives and 6 qualitatives discriminate the studied accessions. Highly significant differences at 1% were observed between the accessions of the two climatic zones and between the accessions from the vegetable gardens and those collected in the natural populations. The agronomical performances of the accessions from the sahelo-soudan zone are higher than those of the accessions from the soudan zone. Also, the performances of the accessions from the vegetable gardens are higher than those from the natural populations. Several positive correlations were observed. The study of the structuring of the diversity of the accessions revealed two great sets. The first set is mainly constituted with cultivated accessions and accessions from the sahelo-soudan zone. The second set is mainly constituted with accessions collected in the natural populations and of accessions from the soudan zone. Thus, the growing practices and the climatic zones were the determining factors in the structuring of the diversity of the studied accessions.