Dobrudzha Agricultural Institute - General Toshevo
Резюме
The experimental work was carried out during the period 2011-2013 on the Institute of
FThe conventional sunflower hybrid “Deveda” was developed at Dobrudzha agricultural
institute, General Toshevo. It is a single interline hybrid. The mother line 217А was created
in DAI. The father line N102R was developed using the method of induced parthenogenesis,
combined with embryo culture from experimental hybrid 154х102. In 2014, the hybrid
“Deveda” was included in unified competitive variety trials (UCVT) after two years testing
in competitive trials. The average seed yield of hybrid “Deveda” in two UCVT was 424.7
kg/da, which exceeded with 6.6% the mean standard of hybrids San Luka, LG50505 and
PR 64F50. The seed oil content was 51.7% and the protein content was 27.1%. In 2015 and
2016 it was tested by the Executive Agency for Variety Testing, Field Inspection and Seed
Control. In 2018, the Patent Office issued the certificate for the hybrid. The plants height is
144-161сm. The vegetation period is 116 days. “Deveda” belongs to the group of middle
early hybrids. The head diameter is 27-29 cm. The head position is vertical and it is slightly
convex. The seeds are black with weakly expressed grey stripes on their edges. Thousand
seeds weight is 55g. The percentage of hull content is 21,4%. The hybrid is resistant to
downy mildew /race 731and 730/ and broomrape. It possesses middle resistantсe to phoma,
phomopsis, althernaria and scclerotinia. The hybrid needs no special requirements for cultivation and the traditional scheme for seed production could be applied. The optimum
plant density is 65000 – 70000 per hectare. Both the parental lines flower on the same time
and they could be planted together during seed production of the hybrid. In 2018 the yield
from seed production /F1 seeds/ is 110 kg/da.
Key words: Disease resistance, Hybrid, Oil and protein content, Sunflower
