Ampelographic and ampelometric characterisation of grapes of Vitis vinifera L. native of Algeria

Abstract

 Algeria has many indigenous varieties of vine that their valorization still remains to be undertaken. Homonyms and synonyms have been highlighted in studies of molecular characterization. Our study is part the objective of the ampelographic characterization of 22 cultivars of vines belonging to the collection of the regional station Benchicao (Medea), for identification and determination of the relationships between them and grouped according their similarities. This study is conducted using 112 quantitative descriptors and 14 qualitative descriptors established by the OIV.. A statistical study was conducted to highlight the most discriminant parameters, namely, angles, depth of sinuses in relation to the lengths of veins. However, the principal component analysis and hierarchical classification have permits to group the varieties in 4 Groups more or less distinct, which we brought out the presence of clones among the individuals analyzed. This diversity of native varieties put to a severe test, risk extinction if their preservation is not undertaken immediately.