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SY Chester

Active

Helianthus annuus L. Sunflower · Agricultural · bred by Syngenta Participations AG| CH

also searched as: си честер

Variety description

10 August 2026

The hybrid belongs to the early-maturing group with a growing season of 105–115 days. Plant height is 150–170 cm. The plant is characterized by a moderately intensive adaptation type and good lodging resistance.

Seeds contain 52–54% oil. The hybrid possesses high genetic resistance to broomrape races A–G, as well as tolerance to Phomopsis, Phoma, Sclerotinia, and downy mildew. Recommended for cultivation in Steppe and Forest-Steppe zones using conventional technology or SU technology.

Sources6
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Countries of admission

6 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.

QM QZ

active no record

Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.

Variety in registries Regions of admission, rights holders, and status of plant breeders' rights

Parties

Breeder
Syngenta Participations AG (CH) 218 Developed the variety
Applicant
SYNGENTA PARTICIPATION AG 961 Submitted the application to the register
Rights holder
Syngenta Crop Protection AG 10 404 Holds the rights to the variety
Maintainer
Syngenta France SAS 1 176 Responsible for variety maintenance

Admission to trade

The variety is listed in the national registry — its seeds are authorized for sale in this country.

  • QZ European Union Active

    № 217731

  • RU Russian Federation Active

    № 70503

    Application
    15 November 2016
    Registration
    23 January 2020
  • PT Portugal Active

    № 17002

    Application
    19 December 2016
  • UA Ukraine Active

    № 17039008

    Application
    10 January 2017
    Registration
    23 April 2019
  • IT Italy Active

    № 018463_A 018463

    Application
    12 January 2017
    Registration
    15 January 2019
  • FR France Active

    № 4061574

    Application
    17 January 2017
    Registration
    1 January 2019

Records are sourced from official registry publications. Data sources and legal status

Found an error in the record?

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

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Nearby in the species list SY Cargo, SY Caruso, SY Casablanca, SY CASPIRA, SY Cassini, SY Celesto, SY Centuri CLP, SY Century CLP, SY Cesario, SY Chelsea CLP, SY Chronos, SY Constanza, SY Contact, SY Cooper CLP, SY Corado, SY Corsica AR, SY Dafnis, SY Dali, SY Damasco, SY Dar Vin CLP

Discussion: SY Chester

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