PR 63 A 90
ActiveHelianthus annuus L. · Sunflower
Soper, John
Helianthus annuus L. Sunflower · Agricultural · bred by David Morgford
also searched as: сирена мс
10 August 2026
The hybrid is characterized by a convex head shape, which fully droops in the ripening phase. The oil content in the seeds varies from 45–46% to 52%.
The plant possesses high plasticity, stress tolerance, and the ability to withstand drought conditions. The recommended plant density at the time of harvest is from 50–55 to 62 thousand plants per hectare, while the hybrid reacts negatively to crop thickening.
1 jurisdiction
Green indicates countries where the variety is listed in the national catalogue and its seeds are authorized for sale. Expired registrations are marked separately: the variety was previously admitted, but sale is no longer permitted.
The variety is listed in the national registry — its seeds are authorized for sale in this country.
№ 04017022
The right is granted for a limited term: propagation of the variety requires a license from the rights holder.
Records are sourced from official registry publications. Data sources and legal status
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DEKALB PLANT GENETICS
Nearby in the species list SILF2523A, Sillouet, Silva, Silvia, Simcon, Simirasol, Simitli CLP, Simson, Siou, Sirena, Sirio, Sirmione, Sirocco, Siuzhet, Siver, /SK-843/, SKA1067, Skarb, SKB 1094, SKB 1124