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Three hundred and ten (310) Bambara groundnut accessions mainly from the Northern semi arid zone of Burkina Faso were assessed for phenotypic variability of agronomic and morphological traits. Mixture of seed types in a given accession is common in Northern area of Burkina Faso. Two to twelve types of seeds compose the majority ofaccessions collected (82%) and only 18% of accessions are homogeneous. Characters like canopy spread, number of pods per plant, number of seeds per pod, seed length, seed width and weight of 100 seeds are positively correlated to yield per plant. A negative correlation was revealed between days to 50% flowering and yield per plant indicatingthat plants which take more time on vegetative stage have less yield in semi-arid conditions of production. Accessions from Burkina assessed for agronomic and morphological characteristics in this study are less variable than 1384 accessions assessed by IITA in 1985 and 1986. This result can be explained by the restricted origin of accessionsfrom Burkina Faso. La variabilite phenotypique des traits agronomiques et morphologiques de 310 accessions de pois Bambara collectees principalement dans la zone semi aride nord du Burkina Faso a ete evaluee. Le melange de differentstypes de semences dans les accessions est une pratique repandue dans le Nord du Burkina Faso. Deux a douze types de semence composent la majorite des accessions (82%) et seulement 18% des accessions sont homogenes. Les caracteres tels que la largeur du feuillage, le nombre de gousses par plante, le nombre de graines par gousse,la longueur et largeur des graines et le poids de 100 graines ont une correlation positive avec le rendement en graine par plante. Une correlation negative a ete mise en evidence entre la date de 50% floraison et le rendement par plante montrant que les plantes qui prennent plus de temps pour leur phase vegetative produisent moins dans les conditionsde production semi arides. Les accessions du Burkina evaluees pour leurs caracteristiques agronomiques et morphologiques sont moins variables que les 1384 accessions evaluees par l\'IITA en 1985 et 1986. Ce resultat peut s\'expliquer l\'origine restreinte des accessions originaires du Burkina. Keywords : Agronomic evaluation, Bambara groundnut, Mixture of seeds, Phenotypic variability, Vigna subterranea . Sciences & Nature Vol. 5 (2) 2008: pp. 191-197

Characterization and evaluation of accessions of Bambara groundnut (<i>Vigna subterranea</i> (L.) Verdcourt) from Burkina Faso