110 years of IASS "Obraztsov chiflik" - Ruse                  150 years of Agricultural experimental work in Bulgaria                  11 - 12 June, 2015 Jubilee scientific conference "Scientific studies in agriculture - a centuries-old tradition and new knowledge"

Own Varieties

Vine


TANGRA – table seedless cultivar

Tangra cultivar was created at the Experimental field of IASS “Obraztsov Chiflik” – Rousse, via inbreeding of hybrid form 3-32 (Bolgar X Alphonse Lavalle) in 1987 by Ivan Todorov.

TANGRA – table seedless cultivar

Morphological, agrobiological and technological investigation of the vegetative pedigree of the selected elite seedling 8-92 (3-32 I1) was made together with Galina Dyakova.

Tangra cultivar is late-ripening (it ripens about 5-th October), a typical table seedless variety. The cluster is large, uniform, average weight being about 400 g. The berry is coarse (5.5 g), red-black, with crispy consistence, the taste – neutral harmonious. The seeds are rudiment and they have no unpleasant taste in consumption of grapes. Dry weight of rudiments in 100 berries is 0.30 g.

Yield of grapes per a hectare is about 18 t. Appropriate formations are half-standard Guyot and Lira, and Tendone in warmer regions. Recommended root stocks for the variety are SO4, Chasselas X Berlandieri 41B and Rupestris du Lo. The vines are cold resistant and grapes - with good transportability. The vines have potential ability for higher yield in Lira and Tendone formations, in higher agrotechnical background, including drip irrigation.    

In consumptive maturity grapes contain 18% sugars and 4.85 g/l titrum acids. Grapes are not friable and have good transportability.

Tangra cultivar is not susceptible to virgin berries and has higher cold resistance and middle resistance to cryptogamic diseases within Euro-Asian vine. It can be successfully grown in regions, favorable for table grape production, under provision of total temperature sum of the vegetation period more than 3900°C.

Grapes of Tangra cultivar are appropriate for fresh consumption and for production of compotes of high quality. Well kept in refrigerator and can be marketed in the winter.

ZORNITSA - table seedless cultivar

Zornitsa cultivar was created at the Experimental field of IASS “Obraztsov Chiflik” – Rousse, via hybridization of cultivars Rusensko edro and King rubi. The crossing was made in 1986 by Ivan Todorov, and together with Galina Dyakova – the morphological, agrobiological and technological investigations.

ZORNITSA - table seedless cultivar

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.



Bolgar clone 14
Bolgar clone 14

BOLGAR CLONE 14

It ripens at the usual for the cultivar time – from 10 to 15 September. The cluster is very large, 640 g (500 g for the population) loose to semi-compact, uniformed in size and berries coloration. The coefficient of fruit bearing is 0,9, 0,7 being for the population. The clone gives up to 20% higher grapes yield than the population. The taste and the coloration of the berries are typical for Bolgar variety. Compared with the population, the clone is with quite lower susceptibility to putting forth aments and abscission of the berries.

Bolgar clone 14 can be cultivated at the typical for the cultivar vine-growing regions.



Rusensko edro
Rusensko edro

RUSENSKO EDRO

It ripens at the end of August. The cluster is large – 450 g, loose. The berry is very coarse – 8 g, long, green-yellow, with 3 small seeds. The consistence is crisp, the taste – harmonious, lightly musket The grapes yield is more than 1,5 t/da. The grapes contain 16% sugars and 6 g/l acids. It is transportable.

The cultivar is recommended to be grown in the open and in glasshouses, in large numbers at the plain regions and limited at sunny and places under lee in foothill areas.



Misket rusenski
Misket rusenski

MISKET RUSENSKI

It ripens at the end of July, the beginning of August, 15 days before Kardinal. The cluster is large, 300 g, loose. The berry is large, 4,8 g, ovate, black. The consistence is crisp, the taste – musket. The yield (t/da) is 1,3. The grapes are rot resistant and transportable. It contains 16% sugars and 4,3 g/l acids.

The cultivar is appropriate to be grown at all vine-growing regions and hilly areas up to 700-800 m above sea level.



Bezsemenno
Bezsemenno

BEZSEMENNO

It ripens at the fist ten days of October. The cluster is large, 450 g, semi-compact. The berry is coarse, 5 g, ovate, red-grey. The consistence is semi-pulpy, the taste – harmonious, with pleasant fruity nuance. The yield of grapes is 2 t/da. The grapes contains 18% sugars and 4,6 g/l acids. It preserves fresh on the vine for a long time after the ripening and has a good transportability.

The cultivar is recommended for production of table grapes for the market in early autumn and in winter. It is appropriate for warm regions with temperature sums more than 3900 C.



Siyana
Siyana

SIYANA

It ripens at the middle of October. The cluster is large, 530 g, loose. The berry is very coarse, 10 g, long, black, with 2 seeds mid-size. The consistence is crisp and the taste - neutral. The yield of grapes is about 2 t/da. The grapes contains 17% sugars and 5,4 g/l acids. It preserves fresh on the root for a long time after the ripening and is highly transportable.

The cultivar is recommended for production of late table grapes intended for realization on the market also in winter. It is recommended to be cultivated at the warmest regions of the country.



Pamid Ruse 1
Pamid Ruse 1

PAMID RUSE 1

It ripens at 12-15 of September, 10 days earlier than Pamid cher. The cluster is mid-large, 260 g. The berry is 3,2 g, 30% larger in weight and size than Pamid cher. The grapes contains more sugars (19,2%) and acids (3,92 g/l), compared to the control form 18,5% and 3,25 g/l, respectively. The yield of grapes is 1,9 t/da. Pamid Ruse 1 does not put forth aments and abscission of the berries is not observed. It manifests a strong recruiting ability in frost bite and with lower susceptibility to powdery mildew and rot.

It is appropriate for consummation in fresh condition and for making of qualitative wine.



Rusensko bez seme
Rusensko bez seme

RUSENSKO BEZ SEME

It ripens towards 20 of September. The cluster is semi-large, 300 g, semi-compact. The berry is coarse, 3,5 g, ovate, green-yellow with pink. The consistence is crisp, the taste – neutral. The yield of grapes is 1,4 t/da. The grapes contains 20% sugars and 8,0 g/l acids. In a later vintage, the sugar content increases to 24-26%, this flavors the raisins production. The cultivar is with increased winter resistance and is rot resistant.

It is recommended to be cultivated at the typical for the table grapes production regions.



Ryahovo
Ryahovo

RYAHOVO

It ripens towards 25 of August. The cluster is semi-large, 450 g, semi-compact. The berry is very coarse, 7,0 g, ovate, green-yellow. The consistence is crisp, the taste – delicate musket. The yield of grapes is 2,0 t/da. The grapes contains 16% sugars and 5,0 g/l acids. It is transportable. The thinning out of berries 10-15 days before ripening sharply increases their sizes and betters the appearance of the cluster.

The cultivar can be cultivated at the typical viticultural regions in the country and at foothill places under lee and in the sun.



Velika
Velika

VELIKA

It ripens towards 20 of August, at one and the same time with Kardinal. The cluster is large, 500 g, loose. The berry is very coarse, long, black, with 1-2 small often soft seeds. The consistence is crisp and the taste – neutral, harmonious. The yield of grapes is over 2 t/da. The grapes contains 16% sugars and 6,0 g/l acids, which determines its high gustatory qualities. It has a good transportability.

The cultivar can be cultivated also at foothill places, facing south and 400-500 m above sea.



Ranno bez seme
Ranno bez seme

RANNO BEZ SEME

It ripens about 10 of August. The cluster is semi-large, 300 g, semi-compact. The berry is coarse, 2,3 g, ovate, green-yellow. The consistence is crisp, the taste – neutral. The yield of grapes is 1,3 t/da. The grapes contains 20% sugars and 5,0 g/l acids. In over ripening, the sugar content reaches to 24-26%.

The cultivar is appropriate for fresh consummation and for raisins, valuable for the food industry. The cultivar can be cultivated also at foothill places up to 600-700 m above sea.



Prista
Prista

PRISTA

It ripens towards 15 of August, before Kardinal. The cluster is large, 380 g, semi-compact. The berry is coarse, 5,3 g, ovate, green-yellow. The consistence is crisp, the taste – musket. The yield of grapes is 1,5 t/da. The grapes contains 16% sugars and 4,0 g/l acids. It is transportable and rot resistant.

The cultivar is appropriate for production of early grapes in the open and in glass houses. The cultivar can be cultivated also at foothill places up to 600-700 m above sea.



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Institute of Agriculture and Seed Science "Obraztsov Chiflik" - Rousse
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