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Keystone 2

Active

Lolium perenne L. Perennial ryegrass · Agricultural · bred by DLF Trifolium A-S, DK

also searched as: кеистоне 2

Variety description

10 August 2026

The variety is characterized by dark green color, good turf density, and disease resistance. It possesses a high rate of establishment and turf formation.

The plant is adapted to heat stress and is actively used for creating sports lawns, as well as for overseeding in regions with warm climates during the winter period.

Sources2
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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Variety registered as early as 2 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified.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
DLF Trifolium A/S (DK) 7 Developed the variety
Applicant
DLF-TRIFOLIUM A/S Submitted the application to the register
Maintainer
DLF Trifolium A/S (DK) 7 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 Active

    № 1018602

    Application
    1 December 2005
    Terminated
    23 February 2010
  • AR Argentina Active

    № 013669

    Application
    23 November 2011
    Registration
    28 March 2011

Plant breeders' rights

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

United States of America № 200700385
Active
  1. Application filed 14 August 2007
  2. Registered 20 February 2013
  3. Currently active indefinite in the register

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

Bizet 1

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Lolium perenne L. · Perennial ryegrass

DLF SEEDS A/S

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11 records

One 50

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Lolium perenne L. · Perennial ryegrass

PGG Wrightson Seeds

IT
11 records

Lolium perenne L. · Perennial ryegrass

Steve Reid

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11 records

Keystar

Withdrawn

Lolium perenne L. · Perennial ryegrass

DLF Trifolium A-S, DK

FR
1 record

Keystone

Active

Lolium perenne L. · Perennial ryegrass

Rutgers, The State University of New Jersey

IT
5 records

Khaya

Terminated

Lolium perenne L. · Perennial ryegrass

Saatzucht Steinach GmbH & Co KG

DE
4 records

Nearby in the species list Kerry, Kertak, Kerval, Keswick, Ketari, Ketario 1, Ketarion 1, Keteku 1, Keystar, Keystone, Khaya, Kiani, Kilaro 1, Kilian, Kilkeel, Kilkenny, Kilrea, Kimber, Kimberley, Kimbuko

Discussion: Keystone 2

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