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Twytop

Terminated

Lolium perenne L. Perennial ryegrass · Agricultural · bred by KWS UK LTD

also searched as: твитоп

Variety description

10 August 2026

The variety Twytop is a diploid form of perennial ryegrass. According to available data, the variety has been included in official lists of varieties approved for use, specifically in the registers of the United Kingdom.

In agronomic materials, the variety is characterized by an ear emergence date of June 13. Other specific morphological indicators, data on resistance to diseases or lodging are absent in open publications.

Sources4
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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.

Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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
KWS UK LTD 772 Developed the variety
Applicant
Serasem (FR) 551 Submitted the application to the register
Rights holder
DLF Seeds A/S Holds the rights to the variety
Maintainer
DLF-Trifolium A/S Responsible for variety maintenance

Admission to trade

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

  • GB United Kingdom Terminated

    № 13/1925

    Application
    6 January 2000
    Terminated
    30 November 2011
  • FR France Active

    № 1009168

    Application
    6 December 2001
    Terminated
    11 February 2005

Plant breeders' rights

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

United Kingdom № 13/1925
Terminated
  1. Application filed 6 January 2000
  2. Registered
  3. Entry closed 19 May 2006

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

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

Same species

Other varieties: Perennial ryegrass

All 3 714 varieties of species

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Lolium perenne L. · Perennial ryegrass

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11 records

One 50

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Lolium perenne L. · Perennial ryegrass

PGG Wrightson Seeds

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11 records

Lolium perenne L. · Perennial ryegrass

Steve Reid

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11 records

Twyplay

Terminated

Lolium perenne L. · Perennial ryegrass

KWS UK LTD

3 records

Twystar

Protection expired

Lolium perenne L. · Perennial ryegrass

TWYFORD SEEDS LTD

IE
6 records

Tyga

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Lolium perenne L. · Perennial ryegrass

CZ DE DK
5 records

Nearby in the species list TURI, Turmalin, Turovec, Tweeter, Twingo, Twins, Twygem, Twymax, Twyplay, Twystar, Tyga, Tyrconnell, Tyrella, Tyrone, Tzetrasport, Ubaldo, Ulmo, Ultra, Umbria, Unico

Discussion: Twytop

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