PR 63 A 90
ActiveHelianthus annuus L. · Sunflower
Soper, John
Helianthus annuus L. Sunflower · Agricultural · bred by MAY AGRO SEED COPR.
also searched as: макстор
10 August 2026
The hybrid belongs to the mid-early maturity group with a plant height of 165–175 cm. The heads are of medium size, convex shape, and inclined downwards; the hybrid possesses high self-pollination capacity.
The oil content in seeds is 46–52%. The plant demonstrates high tolerance to drought and stress conditions during cultivation, as well as resistance to lodging and shattering.
The hybrid possesses high resistance to broomrape (races A-H). Resistance to major diseases is rated on a 0–5 scale as follows: phomopsis — 4, downy mildew — 5, rust — 3, white stem rot — 3, white head rot — 4, macrophomina — 4, alternaria — 4, rhizopus — 3.
The recommended seeding density is 50–55 thousand plants per hectare under sufficient moisture and 45–50 thousand plants per hectare under insufficient moisture.
3 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.
Variety registered as early as 2 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.
The variety is listed in the national registry — its seeds are authorized for sale in this country.
№ 216799
№ Maxtor
№ 014075_A 014075
№ 015571_A 015571
№ 0283390
Records are sourced from official registry publications. Data sources and legal status
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Nearby in the species list Mauro, Mavrix, Maxiflor, Maxil, Maximal, MAXIMO, Maximus CL, Maximus CL F1, Maxisol, Maxisol RM, Maxtor F1, MAXX 240 ST, MAY 27CL909, MAY 37CL864, Maya, Mayol, MAYORAL, Mazurka, MC 1942C, MC 2091A