This study focuses on four yam cultivars belonging to the Folou or Flado farmer’s group in the Gourounsi and Lobiri national languages grown in Burkina Faso. Its objective is to describe the different yam cultivars belonging to this group. To this end, 27 qualitative variables, including ten (10) for the stems, nine (9) for the leaves, five (5) for the tubers and three (3) for the flowers, were selected to characterize the varietal group. The trial was conducted in a Fisher block design with three replications. The work was conducted during the 2019-2020 and 2020-2021 rainy seasons in the village of Onliassan, Sissili province. The study revealed that the Folou or Flado varietal group can be attached to the D. alata species and would consist of five (05) cultivars instead of three (03) previously described by farmers.

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.

Jatropha curcas L. is a perennial oleaginous plant which is known for its multiple uses. The oil extracted from its seeds is used in the manufacture of biodiesel and soap. The plant also has therapeutic virtues and insecticidal properties. In Burkina Faso, the species remains under exploited. Despite its potentialities, the genetic diversity of this phytogenetic resource is badly known. This study was conducted to determine the level and the structuring of the genetic variability of a collection of 70 accessions coming from the various phytogeographical sectors of the country and to estimate the genetic parameters of the various characters. Thus, an agro-morphological evaluation of the collection was carried out during the rainy season 2014. Eleven (11) quantitative characters relating to the vegetative development and the potential of production of the plant were used. This study revealed the existence of variability within accessions. The characters related to the yield showed greater variability than those related of the vegetative development. The analysis of the structuring of variability showed that plants which have an important vegetative development are more productive than those of little size.The estimate of the genetic parameters revealed a weak difference between the phenotypic and genotypic coefficients of variation and high broad sense heritability for all the characters. The characters related to the yield expressed the highest expected genetic advance, phenotypic and genotypic coefficients of variation. The results of the study can be exploited in Jatropha curcas' improvement program.

Northern Burkina Faso, was once a region where yams "y

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.