Voandzou is a seed legume cultivated in Burkina Faso with significant nutritional potential. The objective of this study was to assess the genetic diversity of Bambara nut cultivated in Burkina Faso using microsatellite markers. For the study, fifteen SSRs markers were used for molecular characterization of 90 Bambara nut landraces from three agro-climatic zones of Burkina Faso. All markers were 100% polymorphic with an average value of 4.81 for effective alleles. The polymorphism information content (PIC) ranged from 0.654 to 0.867 with a mean of 0.775. Dendrogram classified the accessions in four mixed groups independently of the three agro-climatic zones. This distribution is consistent with the results on the agro-morphological characterization of the same landraces. This information was served as a basic model for breeding and conservation programs of V. subterranea in Burkina Faso.
Bambara groundnut is a neglected legume crop that contributes to improve global food and face food insecurity. In Burkina Faso, research on Bambara groundnut cropping system were essentially focused on mounding times. Less attention has been paid on the application of fertilizers. Experiments was carried out on the site of Tenkodogo University Centre (11°48’37’’N, 0°22’19’’W), Burkina Faso to study the response of two Bambara groundnut varieties to different NPK application periods. The experiments consisted of a factorial combination of two factors, including the varieties (KVS 235 and KVS 246) and the different NPK application dates (At basal, 7, 15 and 21 days after sowing) in completely randomised blocks with three replications. Characters were collected, including plant height and spread, total biomass at flowering, stalks weight, yield-components and yield. The results indicated that most of characters not varied significantly for both varieties whatever NPK application period except for stalks weight (P = 0.013). The interactions between varieties and NPK application dates had significant effects for only total biomass at flowering (P = 0.048). In addition, pod length has significant effect (P = 0.032) between varieties. The significant effect on the characters mentioned above in both varieties implies that application of NPK fertilizer have influenced the characteristics differently, depending on the period of bringing. NPK application at basal lead to best performance of the results regarding pod and seed dimension and 100-seeds weight and yield. In general, KVS235 outperformed than KVS 246.
Bambara groundnut (Vigna subterranea) is an important seed legume in Burkina Faso. It provides a well-balanced diet and many other benefits for populations, especially in rural areas. Despite all these advantages, bambara groundnut cultivation remains subject to many constraints. One of the most important of them is viral diseases. This study was conducted in order to identify from Burkina Faso bambara groundnut landraces, some resistant genotypes to Cowpea aphid-borne mosaic virus (CABMV). In this study, 20 bambara groundnut landraces collected from three climatic zone of Burkina Faso were tested. According to their level of sensitivity to the CABMV isolate tested we obtained two groups of genotypes: G1 and G2. After retroinoculation, only six landraces, namely E119, E117, E105-a from Sahelian zone and E53-a, E103 and E97 from Sudan-sahelian zone, showed a resistance to the CABMV isolate. These results could be used to develop control strategies against viral diseases.
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