60 research outputs found
Inventaire des ressources en eau de surface : étude des basses eaux, cÎté au vent, en Basse Terre, campagne 1979
Banque de données hydrologiques du Congo : inventaire des données du Congo, du Zaïre et de la Centrafrique, disponibles le 31 mai 1994 à Brazzaville
Monographie hydrologique du fleuve Gambie
Etude détaillée des conditions générales de l'écoulement du bilan de l'eau du bassin du fleuve Gambi
Caractérisation des processus hydrologiques sur le super-site de la Donga : haut bassin de l'Ouémé (Bénin), ORE AMMA-CATCH
Transposable Elements Are a Major Cause of Somatic Polymorphism in Vitis vinifera L.
Through multiple vegetative propagation cycles, clones accumulate mutations in somatic cells that are at the origin of clonal phenotypic diversity in grape. Clonal diversity provided clones such as Cabernet-Sauvignon N°470, Chardonnay N° 548 and Pinot noir N° 777 which all produce wines of superior quality. The economic impact of clonal selection is therefore very high: since approx. 95% of the grapevines produced in French nurseries originate from the French clonal selection. In this study we provide the first broad description of polymorphism in different clones of a single grapevine cultivar, Pinot noir, in the context of vegetative propagation. Genome sequencing was performed using 454 GS-FLX methodology without a priori, in order to identify and quantify for the first time molecular polymorphisms responsible for clonal variability in grapevine. New generation sequencing (NGS) was used to compare a large portion of the genome of three Pinot noir clones selected for their phenotypic differences. Reads obtained with NGS and the sequence of Pinot noir ENTAV-INRAŸ 115 sequenced by Velasco et al., were aligned on the PN40024 reference sequence. We then searched for molecular polymorphism between clones. Three types of polymorphism (SNPs, Indels, mobile elements) were found but insertion polymorphism generated by mobile elements of many families displayed the highest mutational event with respect to clonal variation. Mobile elements inducing insertion polymorphism in the genome of Pinot noir were identified and classified and a list is presented in this study as potential markers for the study of clonal variation. Among these, the dynamic of four mobile elements with a high polymorphism level were analyzed and insertion polymorphism was confirmed in all the Pinot clones registered in France
Compte-rendu d'installation et de déroulement des campagnes d'observations et de mesures au cours des années 1981 et 1982 : ßle d'Efate : bassin de la Teouma, bassin de la Colle, ßle de Santo : bassin de la Sarakata, bassin du Jourdain
Inventaire de la banque de données : pluies journaliÚres (Gambie, Guinée, Mali, Mauritanie), pluies mensuelles (Gambie, Guinée, Mali, Sénégal), hauteurs d'eau (Guinée, Sénégal), débits (Guinée, Sénégal)
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