PR 63 A 90
ActiveHelianthus annuus L. · Sunflower
Soper, John
Helianthus annuus L. Sunflower · Agricultural · bred by RHONE POULENC AGROCHIMIE (FR)
also searched as: рп 521
10 August 2026
The hybrid is versatile and intended for cultivation using Clearfield and Sumo technologies. The vegetation period ranges from 103 to 108 days. Plant height varies within 160–175 cm.
The plant possesses high resistance to lodging, drought, heat, and cold. The hybrid is resistant to 6–7 races of broomrape and is tolerant to downy mildew, white rot, dry rot, charcoal rot, as well as Fusarium.
The yield potential reaches 5.5 t/ha, and seed oil content is in the range of 49–51%.
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.
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Nearby in the species list RP 250, RP 256, RP 267, RP 268, RP 4112, RP 4123, RP 4133, RP 4140, RP 4160, RP 4162, RP 524, RP 526, RP 600, RP 603, RP 606, RP 911, RP259, RP527, RP901, RP902