PR 63 A 90
ActiveHelianthus annuus L. · Sunflower
Soper, John
Helianthus annuus L. Sunflower · Agricultural · bred by INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
also searched as: инра 4701
10 August 2026
The hybrid was used as a model for studying the influence of the leaf apparatus on yield formation. Research revealed the plant's sensitivity to leaf removal, which affected the final stem height and head size. At the same time, the hybrid demonstrated better seed set in the center of the head compared to some counterparts of that time.
The leaf area index for this hybrid varies depending on the leaf position on the stem and planting density. In 1970s documentation, the variety was noted as being tolerant to Sclerotinia infection (head rot).
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.
№ 0091553
Records are sourced from official registry publications. Data sources and legal status
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AGRI OBTENTIONS / INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE (I.N.R.A.)
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Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)
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INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Nearby in the species list Ingrid, Initia, Inka, Inka 280, Inkasun IR, Inoll, Inosix, Inostarck, Inotop, Inoui, Inra 6501, Inra 7702, INSANHO 200 CLP, Instinct, Insun 100, Insun 110, Insun 120, Insun 130, Insun 200 CLP, Insun 222 CLP