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Title: Ampelographic and DNA characterization of local grapevine accessions of the Tuscia area (Latium,Italy)

Author
item MUGANU, MASSIMO - University Of Tuscia
item DANGL, GERALD - University Of California
item Aradhya, Mallikarjuna
item FREDIANI, MANUELA - University Of Tuscia
item SCOSSA, ANGELA - University Of Tuscia
item Stover, Eddie

Submitted to: American Journal of Enology and Viticulture
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 11/7/2008
Publication Date: 2/4/2009
Citation: Muganu, M., Dangl, G., Aradhya, M., Frediani, M., Scossa, A., Stover, E. 2009. Ampelographic and DNA characterization of local grapevine accessions of the Tuscia area (Latium, Italy). American Journal of Enology and Viticulture. 60:110-115.

Interpretive Summary: Grapevines historically grown in the Latium region of Italy were identified using various written accounts. The most important of these local varieties were collected and propagated from local sources, grown in field trials, assessed for vine and fruit traits and were assessed by DNA markers to verify identity. The DNA markers for some varieties did not match vines of the same or similar name in international collections. In some cases, the same DNA markers were present in vines with different local names indicating that different names had been applied to the same variety. Vine and fruit traits showed that some accessions of the same genotype differed in minor characteristics that could be important in local adaptation.

Technical Abstract: The presence of local vines in the Tuscia area (Latium region, Italy) was documented by historical sources. Ampelographic and molecular characterization (35 morphological descriptors and 16 microsatellite loci) was carried out on accessions belonging to the most frequently mentioned local vines. SSR markers have enabled us to distinguish cases of local synonymy and microsatellite profiles have permitted comparison with previously reported profiles indicating synonymy and divergence with vines in other collections. Ampelographic traits showed that some accessions of the same genotype differ in minor characteristics that can have a role in clonal evaluation.