PR 63 A 90
ActiveHelianthus annuus L. · Sunflower
Soper, John
Helianthus annuus L. Sunflower · Agricultural · bred by Burlov Viktor Vasylovych
also searched as: 52 а
10 August 2026
The "Sx 52 A" line is used as a component in the development of new sunflower hybrids. Its scientific value lies in its combining ability and thousand kernel weight, which are passed on to the progeny during the breeding process.
This material does not have a commercial description, including plant height, maturity group, or disease resistance, as these characteristics are indicators of the final hybrid rather than the intermediate line.
2 jurisdictions
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.
breeder code 052
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.
№ 09017099
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
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KOIPESOL SEMILLAS, S.A.
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Northrup King Semences SA (FR)
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Agri Genetics Company (US)
Nearby in the species list 5028R, 503 R, 5038H, 505 R, 5053L SU, 5064L SU, 507 R, 509R, 50R, 512 R, 535B, 53A, 55 B, 56C20R, 5713 R, 58042 A, 58049, 59 R, 5V, 6027L CLP