Yason

Originator - Plant Production Institute named after V.Ya. Yuriev of NAAS.

Registration year - 2007. Recommended zones of cultivation: Steppe and Forest-Steppe of Ukraine.

Early-ripening. The growing period is 105-108 days.

The plant height is 175-180 cm. The calathidium is deep-flat, with a diameter of 18-24 cm. The hybrid is highly resistant to lodging and shedding. It is drought resistant.

Tolerance to head rot.

The husk content is 21.0-22.0%. The 1000-seed weight is up to 60-61 g. The oil content in seeds is 50.1%.

The yield potential is 4.3 t/ha. The yield in the demonstration field of the Plant Production Institute named after V.Ya. Yuriev is 3.72 t/ha; the yield in the demonstration field of Poltava State Agricultural Research Station named after MI Vavilov is 3.43 t/ha. The recommended pre-harvest plant density is 45,000-50,000 plants/ha.

Seed production peculiarities. The parents in hybridization plots are sown simultaneously. The female/male row ratio in hybridization plots can be 6:2; 8:4; 10:2; or 12:4.