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| Authors: | P. Cindric, N. Korac, V. Kovac |
| Keywords: | yield, quality, cold hardiness, Plasmopara, Oidium, Botrytis |
Abstract:
At the viticulture experiment station in Sremski Karlovci (the Vojvodina Province, northern Yugoslavia), grape breeding started 50 years ago.
Native pontica - balcanica grape varieties had been grown in these parts earlier.
The old varieties (Slankamenka, Smederevka, Kevidinka, Skadarka, Prokupac, etc.) had high yielding potential but they rendered wine of modest quality.
To increase wine quality, occidentalis - galica varieties were introduced, for growing as well as crossing with the old varieties.
As a result of these breeding efforts, first new Yugoslav grape varieties (Neoplanta, Sirmium, Zupljanka) were approved in 1970. Several new varieties (Rumenika, Probus, Sila, Nova dinka) followed soon afterwards.
In addition to a significant increase in quality achieved with this new varieties, the varieties Zupljanka and Sila provided high resistance to Botrytis cinerea. Unfortunately, all these varieties are susceptible to low winter temperature.
In the mid-seventies, East Asian species Vitis amurensis was included in the hereditary stock, through the introduction of Hungarian varieties Kunleany and Kunbarat.
The subsequent breeding work resulted in the approval of six new varieties in 1991. The lineage of these varieties (Liza, Petra, Mila, Rani rizling, Lela, Zlata) includes 12.5% of V. amurensis and 87.5% of V. vinifera. Besides a respectable quality of wine, Liza and Petra incorporate high cold hardiness and reduced susceptibility to Botrytis cinerea and Plasmopara viticola. With the objective of further increasing the resistance to fungal diseases hereditary stock of North American species was introduced via Seyve Villard hybrids and varieties derived from them.
The lineage of last seedling generation included over 90% of V. vinifera and small portion of V. amurensis and North American species.
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