PR 63 A 90
ActiveHelianthus annuus L. · Sunflower
Soper, John
Helianthus annuus L. Sunflower · Agricultural · bred by KOIPESOL SEMILLAS, S.A.
also searched as: рха 274
10 August 2026
The RHA 274 line is a well-known oil-type breeding material. In breeding work, it is used as a fertility restorer for creating sunflower hybrids and serves as an important tool in genetic research, including trait mapping and regeneration from protoplasts.
The plant has a recessive type of branching. A key characteristic of the line is its genetic resistance to downy mildew, due to the presence of specific resistance genes such as Pl2, Pl9, and Pl10. The line is used in experiments studying the inheritance of yield and seed fatty acid composition.
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.
A single variety may be registered in different countries under different names. All records are consolidated into one profile based on the breeder's code—an internal number that is identical for the variety across all registries.
The primary name shown is the one under which the variety is registered in the largest number of jurisdictions. Search finds the variety by any of its names.
The variety is listed in the national registry — its seeds are authorized for sale in this country.
№ 217606
№ 19760110
№ 19950179
Records are sourced from official registry publications. Data sources and legal status
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Monsanto Agricultura España S.L.U.
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EURALIS SEMILLAS, S.A.
Nearby in the species list RHA 11, RHA-113, RHA-18, RHA 22, RHA 267, RHA 2670, RHA-2671-I, RHA 26711, RHA 2672 I, RHA 26721, RHA-2762, RHA 2781, RHA-28, RHA 3000V, RHA 3Rf IMI, RHA 44, RHA 46, RHA 5Rf IR, RHA 957R, RHA 971R