The white grape variety probably comes from Istria-Croatia or from Veneto-Italy. Synonyms are Ghera, Glere, Grappolo Spargolo, Prosecco, Prosecco Tondo, Serpina, Serprina, Serprino, Uva Pissona ( Italy ); Briska Glera, Gljera, Steverjana ( Slovenia ); Beli Teran, Teran Bijeli ( Croatia ). Despite apparently indicative synonyms or morphological It must not be similar to the varieties Glera Lunga (Prosecco Lungo), Malvasia Bianca Lunga (Prosecco Nostrano) or Perera be confused. Until 2009 the officially valid main name was Prosecco (Prosecco Tondo); the change to Glera has resulted in some confusion.
According to a non-verifiable hypothesis, the variety should already be in the antiquity for that of Pliny the Elder (23-79) mentioned famous Pucinum have been used. In the late 18th century, several morphologically different varieties were called Prosecco in the province of Treviso-Veneto. There is also a congregation of this name, which is also referred to in most sources as the "place of birth". In the middle of the 19th century, Count Balbi Valier selected a special variety with round berries in the hills of the municipalities of Conegliano and Valdobbiadene and called it Prosecco Balbi or Prosecco Tondo (tondo = round) (the variety was then a crossing partner of the new variety) Incrocio Manzoni 2.15 ). In the 1980s, the institute Conegliano two other varieties were selected for research purposes, that was Prosecco Lungo with oval berries (lungo = long) and Prosecco Nostrano (nostro = our).
Several DNA analysis between 2003 and 2009 showed that it is not a variety, but three separate varieties. Prosecco Tondo (Glera) was now called Prosecco and Prosecco Lungo (Glera Lunga) initially kept the name. Prosecco Nostrano is identical to Malvasia Bianca Lunga, There are genetic similarities between Prosecco and Prosecco Lungo, one Parent-offspring relationship can however be excluded. The variety Vitovska (Vitouska) originated from a presumably natural crossing Prosecco (Prosecco Tondo) x Malvasia Bianca Lunga (Prosecco Nostrano). At the end of this insightful history, it emerged that the supposedly independent Slovenian varieties Briska Glera and Steverjana, as well as the Croatian Teran Bijeli are all identical to Prosecco.
In connection with the high qualification of the DOC area Conegliano-Valdobbiadene on DOCG Conegliano-Valdobbiadene Prosecco According to a decree by the Italian Minister of Agriculture on July 17, 2009, it was decided that from January 1, 2010 “Prosecco” would no longer be the name of a grape variety, but only one designation of origin (confirmed by EC Regulation No. 1166/2009). The Prosecco (Tondo) variety was renamed Glera and the Prosecco Lungo variety was renamed Glera Lunga. In the opinion of the Swiss biologist Dr. José Vouillamoz this is misleading. Because Glera is a general term for several different varieties. In addition, studies have shown that the term Glera mostly refers to Prosecco Lungo and less often to Prosecco (Tondo), Vitovska and others.
The late ripening vine is sensitive to drought, as well as vulnerable to both mildews. Flavescence doree and millerandage, It produces straw to golden yellow, lively, rather neutral white wines. Sometimes it is characterized by a nut-like aroma and a slightly bitter aftertaste. There has always been confusion about the name because Prosecco has been and still is mistakenly used as a synonym for sparkling or sparkling wine. This is also wrong because, in addition to sparkling wine, still wine (Tranquillo) is made from the variety. The variety is excellent for the production of sparkling and sparkling wines.
In the Veneto widespread variety is in DOC / DOCG wines Colli Asolani Prosecco. Colli di Conegliano. Colli Euganei (here under the name Serprina), Conegliano-Valdobbiadene Prosecco. Prosecco. Montello e Colli Asolani and Venezia authorized. The majority, with over 90%, is in the province of Treviso in Veneto. The rest is on other provinces in the region, as well as the region Friuli-Venezia Giulia distributed. In 2010, 18,255 hectares were recorded in Italy. There are also small acreages in Slovenia and Croatia, as well as overseas in Argentina (10 ha) and Brazil (173 ha). In 2010 the variety (at that time still under the name Prosecco) occupied a total of 18,437 hectares. Compared to 1990 with 7,498 hectares at the time, this means more than twice the amount. It thus demonstrated in the worldwide varieties ranking rank 42.
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012
Images: Ursula Brühl, Doris Schneider, Julius Kühn Institute (JKI)