5 research outputs found
Caracterisation agro-morphologique des accessions de fonio (Digitaria exilis) collectees au nord de la Cote dâIvoire
Le fonio [Digitaria exilis Stapf (Kippist.)], cĂ©rĂ©ale Ă petits grains, cultivĂ©e et consommĂ©e dans le nord de la CĂŽte dâIvoire, est un aliment clĂ© de la sĂ©curitĂ© alimentaire des populations de cette zone. Cependant, aucune Ă©tude portant sur la diversitĂ© gĂ©nĂ©tique des variĂ©tĂ©s locale nâa Ă©tĂ© rĂ©alisĂ©e Ă ce jour. La prĂ©sente Ă©tude vise Ă Ă©valuer le niveau et la structuration de la variabilitĂ© agro-morphologique. Ainsi, 217 accessions de fonio ont Ă©tĂ© caractĂ©risĂ©es Ă lâaide de 24 caractĂšres agro-morphologiques dans un dispositif en blocs de Fischer Ă trois rĂ©pĂ©titions. Une variabilitĂ© morphologique moyenne a Ă©tĂ© observĂ©e entre les accessions. Ceci est confirmĂ© par lâanalyse des composantes principales qui a permis dâexpliquer 51,516 % de la variabilitĂ©. La classification ascendante hiĂ©rarchique (CAH) a mis en Ă©vidence quatre groupes : (1) les accessions Ă cycle court et Ă faible production, (2) les accessions Ă cycle intermĂ©diaire et Ă production moyenne, (3) les accessions Ă cycle long et Ă forte production et (4) les accessions Ă cycle long mais Ă faible production. Lâanalyse factorielle discriminante (AFD), Ă travers le test de Wilks, a montrĂ© que sept variables sur 24 permettent de discriminer les groupes. Ils peuvent constituer des critĂšres de base pour diffĂ©rencier les variĂ©tĂ©s de fonio en CĂŽte dâIvoire. Les groupes identifiĂ©s peuvent servir de point de dĂ©part pour une amĂ©lioration de lâespĂšce.
Mots clĂ©s : Digitaria exilis, variabilitĂ© agro-morphologique, accession, fonio, CĂŽte-dâIvoire
English Title: Agro-morphological characterization of Fonio accessions collected in northern Cote dâIvoire
Fonio [Digitaria exilis Stapf (Kippist.)], a small grain cereal, grown and consumed in northern CĂŽte dâIvoire, is a key food security for the people of this area. However, no study on the genetic diversity of landraces has been carried out to date. The present study aims to assess the level and structure of agro-morphological variability. Thus, 217 fonio accessions were characterized using 24 agro-morphological characters in a randomized complete block design (RCBD) with three replicates. An average morphological variability was observed between the accessions. This is confirmed by the analysis of the principal components which made it possible to explain 51.516 % of the variability. The ascending hierarchical classification highlighted four groups: (1) short cycle and low production accessions, (2) intermediate cycle and medium production accessions, (3) long cycle and high production accessions and (4) long cycle but low production accessions. The discriminant factor analysis (AFD), through the Wilks test, showed that seven variables out of 24 allow to discriminate groups. They can constitute basic criteria to differentiate the varieties of fonio in CĂŽte dâIvoire.The identified groups can serve as a starting point for improving the species.
Keys words : Digitaria exilis, Agro-morphological variability, accession, fonio, CĂŽte dâIvoire
AbcÚs épidural compressif isolé à aspergillus
LâabcĂšs Ă©pidural isolĂ© dâorigine aspergillaire sur terrain immunocompĂ©tent est rare et de diagnostic difficile. Chez le sujet immunodĂ©primĂ© cette affection sâintĂšgre dans le cadre dâune aspergillose invasive. Les auteurs rapportent un cas dâabcĂšs aspergillaire retrovertĂ©bral isolĂ© rĂ©vĂ©lĂ© par une compression mĂ©dullaire thoracique chez un sujet immunocompĂ©tent de 55 ans. Le traitement a Ă©tĂ© chirurgical dâemblĂ©e. Devant la nĂ©gativitĂ© des examens microbiologiques du pus, lâexamen histopathologique de la coque de lâabcĂšs a permis le diagnostic dâaspergillose. Un traitement antifongique Ă base dâItraconazole Ă la posologie de 400 mg/24H a Ă©tĂ© instituĂ© pour 6 mois. Dans cet article, les auteurs discutent des mĂ©canismes de survenue, du traitement de cette rare affection tout en insistant sur lâimportance de lâhistopathologie pour le diagnostic de certitude de cette rare affection.Mots clĂ©s : aspergillose vertĂ©brale, abcĂšs aspergillaire, compression mĂ©dullaire.English AbstractSpinal epidural abscess by Aspergillus is a rare disease on immunocompetent individuals. The diagnosis remains difficult. In immunocompromised patient, this affection occurs in invasive aspergillosis. The authors report a single case of retro vertebral aspergillar abscess revealed by a thoracic spinal compression in a 55 years old immuno- competent patient. The initial surgical treatment allowed the sampling of pus. The micro bacterial analysis of the pus was negative however the histopathologic analysis of the abscess wall provided the diagnosis of aspergillosis. Subsequently, an antifungal treatment by Itraconazole 400mg/ daily was administered during6 months. In this article, the authors discussed the pathogeny and the treatment of this rare disease. We emphasized the relevance of the histopathology as a specific diagnosis tool.Keywords: vertebral aspergillosis aspergillar abscess, spinal compressio