ISHS Acta Horticulturae 603: VIII International Conference on Grape Genetics and Breeding
MOLECULAR, CHEMICAL AND MORPHOLOGICAL TOOLS TO EXPLORE VERTZAMI / MARZEMINO / BARZEMINO / BALSAMINA CULTIVAR GROUP |
| Authors: | M. Labra, V. Fasoli, O. Failla, A. Spinardi, N. Nikolau, M. Stefanini, P. Villa, A. Scienza |
| Keywords: | ampelography, anthocyanin profile, biodiversity, grapevines, SSR and AFLP markers. |
| Abstract:
The relationships within the Vertzami / Marzemino / Barzemino / Balsamina group were investigated with the aim to recover intra-variety biodiversity. Vertzami is a variety grown in Lefkas (a Greek Ionian island) considered to be very close to Marzemino, which is grown in north-eastern Italy as well as Barzemino and Balsamina, which at the present are germplasm relics. More than fifty accessions were sampled including: Vertzami from different sites in Lefkas; Marzemino from different localities and germplasm collections; Barzemino from germplasm collection or from old and marginal vineyards; Balsamina from germplasm collections. Accessions were analysed by molecular (SSR and AFLP markers), chemotaxonomic (anthocyanin profile of berry skin) and morphological (phyllometry) methods. Results showed that Vertzami / Marzemino / Barzemino / Balsamina are different varieties even if phylogenetically related. Vertzami accessions did not show any genetic diversity and very low phenotypical differences. Marzemino accessions displayed a minor genetic and phenotypic diversity. Results support the idea that Vertzami is a distinct member of this cultivar family, which had origin in Italy and that was introduced in Lefkas by Venetians during their dominion of the Ionian islands (XIV-XVIII centuries). | |
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