PR 63 A 90
ActiveHelianthus annuus L. · Sunflower
Soper, John
Helianthus annuus L. Sunflower · Agricultural · bred by Interstate Seed Co.
also searched as: ислеро
10 August 2026
The hybrid appears in scientific papers dedicated to studying the influence of sowing dates on plant development, particularly on flowering time, maturity, and overall productivity. According to the research results, sowing dates did not have a statistically significant effect on the oil content percentage in the seeds of this hybrid.
Detailed morphological characteristics, such as plant height, as well as official technical documentation and data on disease resistance, are absent in available publications. The hybrid is classified as rare and is considered obsolete for modern industrial production.
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.
The variety is listed in the national registry — its seeds are authorized for sale in this country.
№ 215998
№ 19860381
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
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Revol Benoit
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Oliv"ie Ladsus
Helianthus annuus L. · Sunflower
Helianthus annuus L. · Sunflower
Van der Have Research (NL)
Helianthus annuus L. · Sunflower
Interstate Seed Co.
Nearby in the species list Iseo, Isera, ISG103, ISG99, Isidor, Isidro, Iskander, Isla, Island, Islara, Ismus, Iso 105, Iso 92, Isodur, Isofort, Isogone, Isola, Isolde, Isoleic, Isomil