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SR 4420

Active

Lolium perenne L. Perennial ryegrass · Agricultural · bred by SEED RESEARCH OF OREGON

also searched as: ср 4420

Variety description

10 August 2026

The variety is of the turf type and is intended for creating dense turf covers on sports fields, golf courses, and park areas. The plant possesses a dark green color, fine leaf texture, and the ability to germinate rapidly when overseeding worn areas.

The variety's breeding is aimed at increasing genetic resistance to gray leaf spot, crown rust, leaf spot, and red thread. Due to the presence of endophytes in the tissues, the variety possesses increased protection against pests and stress conditions, but is not suitable for livestock grazing due to the toxicity of these fungi to animals.

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.

terminated 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Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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.

Also known as

A single variety may be registered in different countries under different names. All records are consolidated into one profile based on the breeder's code—an internal number that is identical for the variety across all registries.

  • SR 4420 primary QM, US
  • SR4420 IT

The primary name shown is the one under which the variety is registered in the largest number of jurisdictions. Search finds the variety by any of its names.

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

Parties

Breeder
SEED RESEARCH OF OREGON 76 Developed the variety
Applicant
SEED RESEARCH OF OREGON 76 Submitted the application to the register
Maintainer
PICKSEED 53 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

    № 009995_A 009995

    Application
    12 July 2004
    Registration
    7 April 2008
    Terminated
    12 June 2019

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 № 200200227
Active
  1. Application filed 19 August 2002
  2. Registered 29 September 2010
  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?

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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

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Lolium perenne L. · Perennial ryegrass

SEED RESEARCH OF OREGON

IT
3 records

Nearby in the species list Spoiler, Sponsor, Sport, Springfield, Sprinter, Sputknik, Sputnik, Spyglass, SR 4220, SR 4400, SR 4500, SR 4600, Sr 4700, Sr 4750, Stabilo, Stadion, Stamina, Stanford, Stanley, Stann

Discussion: SR 4420

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