About clonal variability in grapevine (example of Vitis vinifera cv. Cabernet franc) and the importance of saving genetic diversity
Abstract
Clonal selection has become the almost unique way of propagating plant material for vineyards. Clonal selection allows control of virus diseases and selection of genotypes on agronomic, viticultural or enological criteria. Clonal selection has the major drawback that it impoverishes genetic diversity. For major grapevine varieties, some genetic diversity is maintained in institutional collections. However, this way of conservation is expensive and remains fragile. A cost effective way to preserve intra-varietal diversity is to maintain a limited proportion of mass selection in vine propagation. Private clonal selection can also contribute, in a more limited way, to maintain genetic resources. To show the extend of clonal variability in grapevine, an example of results from a private clonal selection programme on Vitis vinifera Cabernet franc is presented.
Issue: GiESCO 2013
Type: Oral
Authors
1 Univ. Bordeaux, ISVV, Ecophysiology and functional genomics of grapevines, UMR 1287, F-33140 Villenave d’Ornon, France
2 Bordeaux Sciences Agro, ISVV, Ecophysiology and functional genomics, UMR 1287, F-33140 Villenave d’Ornon, France
3 Station de Recherche Agroscope Changins-Wädenswil ACW, Route de Duiller 50, CP 1012 Nyon 1, Switzerland