PR 63 A 90
ActiveHelianthus annuus L. · Sunflower
Soper, John
Helianthus annuus L. Sunflower · Agricultural · bred by Institute of Field & Vegetable Crops (RS)
also searched as: рха к б
10 August 2026
The line is a breeding tool, not a commercial variety for production planting. It is classified as a "general combiner," which allows for obtaining hybrid progeny with predictable traits.
Studies of the line focus on its genetic contribution to the development of hybrids, in particular, on the analysis of the inheritance of 1000 kernel weight. RHA C B is also used in breeding for modifying the oleic and linoleic acid content in sunflower oil.
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 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
The directory replicates the primary source. If an entry differs from the official publication, please specify the discrepancy and provide a link if possible. Corrections are added to the moderation queue.
This is a directory, not an official registry: data is based on public disclosures and may have changed. More about sources
Same species
Helianthus annuus L. · Sunflower
Soper, John
Helianthus annuus L. · Sunflower
Revol Benoit
Helianthus annuus L. · Sunflower
Oliv"ie Ladsus
Helianthus annuus L. · Sunflower
EURALIS SEMILLAS, S.A.
Helianthus annuus L. · Sunflower
EURALIS SEMILLAS, S.A.
Helianthus annuus L. · Sunflower
Institute of Field and Vegetable Crops (SB)
Nearby in the species list RHA 3Rf IMI, RHA 44, RHA 46, RHA 5Rf IR, RHA 957R, RHA 971R, RHA ANN 65, RHA AO1745, RHA AO1750, RHA B113, RHA cd, RHA CE 1932 2 82 T, RHA CE 1956 82 T, RHA CE1420-82T, RHA CE1957-82T, RHA CE2006-82C, RHA CE2205-81T, RHA D191, RHA-E-ANN-65, RHA-HOL-3RF