Mitteilungen Klosterneuburg 59 (2009): 199-208 Reconstructing the heritages of 'GruÈ ner Veltliner' and 'Sauvignon blanc' from crossings with 'Traminer' by SSR analyses FERDINAND REGNER and ROBERT HACK Lehr- und Forschungszentrum Wein- und Obstbau A-3400 Klosterneuburg, Wiener Straûe 74 E-mail:
[email protected] 'GruÈ ner Veltliner' is the main variety in Austrian viticulture. About 30 % of the national production is obtained from this grapevine. Due to the importance of the variety for the Austrian production it is not satisfying to define its origin only as traditional and unknown. By means of more than 120 SSR markers it was feasible to confirm the parentage of the variety 'Traminer'. Fortuitously we could recognize the second parent of 'GruÈ ner Veltliner'. But this grapevine survived as a single plant without a name and still without reference vine therefore still nameless. Concerning the phenotype this unnamed variety seems to be more similar to 'GruÈ ner Veltliner' than to 'Traminer', the other parent. Huge worldwide importance is attributed to the variety 'Sauvignon blanc'. In France more than 25000 ha are planted with 'Sauvignon', in oversea countries like New Zealand, Australia and others acreages are in- creasing. The origin of the variety was not clear and even the heritage was unknown. Numerous SSR analyses allo- wed to recognize the parentage as a cross of 'Traminer' x 'Chenin blanc'. So 'Traminer' could be determined once more as parental vine of a high quality grapevine variety. 'Traminer' seems to be one of the key varieties for the de- velopment of the Mid European diversity of grapevine.