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4K20

Terminated

Beta vulgaris Sugar Beet Group Sugar beet · Agricultural · bred by KWS SAAT SE & CO.KGAA

also searched as: 4к20

Variety description

10 August 2026

The 4K20 hybrid, known by the commercial name Annalisa, is a specialized variety developed for cultivation in conditions requiring protection against specific soil pathogens. The main characteristic of the variety is its nematode resistance (NT-variety) to the beet cyst nematode.

During the mid-2000s, the variety underwent yield and disease resistance testing in comparative studies. Data on current morphological traits and quality indicators of the variety are absent in current sources, as the hybrid is not part of the modern market portfolio.

Sources5
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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.

terminated no record

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

Parties

Breeder
KWS SAAT SE 6 759 Developed the variety
Applicant
KWS SAAT SE 2 822 Submitted the application to the register
Maintainer
KWS Saat AG (DE) 1 300 Responsible for variety maintenance

Admission to trade

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

  • IT Italy Terminated

    № 009792_A 009792

    Application
    17 December 2003
    Registration
    27 March 2006
    Terminated
    15 March 2017
  • FR France Terminated

    № 1014182

    Application
    22 December 2003
    Registration
    1 January 2006
    Terminated
    31 December 2011

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

Same species

Other varieties: Sugar beet

All 8 601 varieties of species

ROSALINDA KWS

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE and CO KGAA

BE DK FR SE
6 records

BTS 6405

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

Betaseed Inc. (US)

BE FR NL
5 records

Ras poly

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Syngenta participation AG

FR IT SE
4 records

3T115

Withdrawn

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

ES
1 record

4 K 446

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Dietrich Hauer, Wolfgang Mechelke,

UA
2 records

4K21

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

ES IT
2 records

Nearby in the species list 3R56, 3R61, 3R63, 3S43, 3S45, 3S47, 3S51, 3S52, 3T115, 4 K 446, 4K21, 4K25, 4K443, 4K452, 4K455, 4K461, 4K467, 4K477, 4K496, 4K497

Discussion: 4K20

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