Abstract
The sunflower variety Yubilyar was developed at the Siberian experimental station - a branch of the V.S. Pustovoit All-Russian Research Institute of Oil Crops (Omsk region, Isilkul) by the method of individual selection of the productive samples from the varietal population Sibirsky 97 and directed cross-pollination of them during free flowering in an isolated area. In the conditions of the Omsk region, the Yubilyar varie-ty belongs to a very early maturity group. The stem of the variety is erect, unbranched, 120–140 cm high. The basket is convex when ripe, 19–21 cm in diame-ter. Achenes are medium-sized, narrow-ovoid, black. Weight of 1000 seeds 57–71 g. According to the results of variety testing in 2020–2022, the new variety exceeded the standard variety Irtysh of local breed-ing in terms of seed yield by 0.35 t/ha, seed oil content by 2.2% and oil yield by 0.22 t/ha. The Yubilyar variety is recommended for cultivation in the Western Siberian (10) and Ural (9) regions.
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