Zornitsa cultivar was created at the Experimental field of IASS “Obraztsov Chiflik” – Rousse, via hybridization of cultivars Rusensko edro and King rubi.  Zornitsa cultivar is a typical table seedless variety, ripening during the second half of September. The cluster is large (400 g), uniform, and the berry is coarse (4.9 g), red-grey colored. The consistence of berry is crispy, and the taste is harmonious with specific delightful fruit nuance. The seeds are rudiment and they have no unpleasant taste in consumption of grapes. Dry weight of rudiments in 100 berries is 0.22 g Yield of grapes per a hectare is about 16 t. The vines are cold resistant and grapes - with good transportability. Appropriate root stocks for the variety are SO4, Chasselas X Berlandieri 41B and Rupestris du Lo. Recommended formations are half-standard Guyot and Lira. The vines showed potential ability for higher yielding in Lira formation and in drip irrigation.

In consumptive maturity grapes contain 20% sugars and 5.4 g/l titric acids. During vegetation periods with higher total temperature sums, the sugar content in grapes reaches 22-23 %, which is favorable for production of raisins. Grapes are not friable and have good transportability.

Zornitsa cultivar showed higher winter hardiness and with middle resistance to cryptogamic diseases within the culture vine Vitis vinifera ssp. sativa. In strong damages caused by extreme cold below minus 18-20°C, a very good regenerative ability was expressed.

The cultivar finds good conditions for its growing and fruit-bearing in areas where the total temperature sum for vine vegetation is higher than 3800 – 3900°C.

Grapes of Zornitsa cultivar are appropriate for fresh consumption and for processing into raisins and compotes. Well kept in refrigerator and can be marketed in the winter.

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Institute of Agriculture and Seed Science "Obraztsov Chiflik" - Rousse
1 Prof. Ivan Ivanov Str., 7007 Rousse, Bulgaria

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