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Kovalski

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Lactuca sativa L. Lettuce · Vegetables · bred by Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)

also searched as: ковалски

Variety description

10 August 2026

The plant has wavy, stable leaves and is late to head. The small cut area and closed lower part of the rosette simplify the harvesting process, and the variety maintains its marketability for a long period.

The variety shows high resistance to downy mildew (races Bl:29-41EU) and lettuce aphid (Nr:0), as well as intermediate resistance to Fusarium wilt (Fol:1, 4).

The lettuce is intended for cultivation in open field and greenhouses. For greenhouse cultivation, the recommended planting density is 13–16 plants per m².

Sources6
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Countries of admission

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.

application 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Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL) Developed the variety
Applicant
Rijk Zwaan Zaadteelt en Zaadhandel B.V. Submitted the application to the register
Rights holder
Rijk Zwaan Zaadteelt en Zaadhandel B.V. Holds the rights to the variety
Maintainer
Rijk Zwaan France SARL (FR) 566 Responsible for variety maintenance

Admission to trade

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

  • FR France Application submitted

    № 4080478

    Application
    18 December 2024

Plant breeders' rights

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

European Union № 20251403
Application submitted
  1. Application filed 26 June 2025
  2. Registered
  3. Currently active indefinite in the register

More 1 record protections in other jurisdictions are shown on the map above.

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

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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 Konzugo, Koraal, Korallo, Korda, Kordula, Korigan, Kornelia, Kosma, Kountry, Kouros, Kraken, Král máje I., Kravitz, Krico, Krilda, Krilly, Krimaldi, Krinas, Krindor, Kripke

Discussion: Kovalski

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