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Sirena

Active

Helianthus annuus L. Sunflower · Agricultural · bred by MAY-AGRO SEED CORPORATION

also searched as: сирена

Variety description

10 August 2026

The hybrid is medium-height and forms a strong stem with a developed root system, which ensures good lodging resistance. The recommended plant density at the time of harvest is 50–55 thousand units per hectare.

The plant possesses genetic resistance to downy mildew. Resistance to broomrape varies depending on the hybrid modification and can cover a spectrum of races from A to E.

Sources4
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Countries of admission

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.

QM

terminated no record

Variety registered as early as 2 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified.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.

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

Parties

Breeder
MAY-AGRO SEED CORPORATION 4 Developed the variety
Applicant
MAY-AGRO SEED CORPORATION 4 Submitted the application to the register
Rights holder
MAY-AGRO SEED CORPORATION 4 Holds the rights to the variety
Maintainer
Oilseeds Research and Development Co. 4 Responsible for variety maintenance

Admission to trade

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

  • TR Turkey Active

    № Sirena

    Registration
    26 April 2005
  • MD Moldova Application submitted

    № 0281516

    Application
    11 April 2005
  • ES Spain Active

    № 20050275

    Application
    1 December 2005
    Terminated
    24 October 2008

Plant breeders' rights

The right is granted for a limited term: propagation of the variety requires a license from the rights holder.

Spain № 20054629
Terminated
  1. Application filed 19 December 2005
  2. Registered 28 January 2008
  3. Entry closed 6 September 2017

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 Silene, SILF2523A, Sillouet, Silva, Silvia, Simcon, Simirasol, Simitli CLP, Simson, Siou, Sirena (MS), Sirio, Sirmione, Sirocco, Siuzhet, Siver, /SK-843/, SKA1067, Skarb, SKB 1094

Discussion: Sirena

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