Skip to content

SR 4220

Active

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

also searched as: ср 4220

Variety description

10 August 2026

The variety is a vigorous bunchgrass characterized by rapid rooting and the formation of a dense, dark blue-green cover. It possesses increased resistance to frequent mowing.

The plant has genetic resistance to gray leaf spot and high tolerance to soil salinity. The presence of endophytes in the plant structure provides natural protection against a number of surface pests.

The variety, also known by the breeding number SRX 4801, is used for creating high-quality sports turfs, golf courses, and park areas. Due to its ability to develop rapidly, it is often used in mixtures for overseeding and repairing grass covers.

Sources8
  • Loading…

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Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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 4220 primary QM, US
  • SR4220 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

    № 009994_A 009994

    Application
    12 July 2004
    Registration
    7 April 2008
    Terminated
    10 March 2020

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 № 200200225
Active
  1. Application filed 12 August 2002
  2. Registered 12 July 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?

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

Active

Lolium perenne L. · Perennial ryegrass

DLF SEEDS A/S

DK FR NL
11 records

One 50

Active

Lolium perenne L. · Perennial ryegrass

PGG Wrightson Seeds

IT
11 records

Lolium perenne L. · Perennial ryegrass

Steve Reid

FR UA
11 records

Sputnik

Active

Lolium perenne L. · Perennial ryegrass

Ramakrishnan M Nair

BE DE LU NL
12 records

Spyglass

Active

Lolium perenne L. · Perennial ryegrass

Barenbrug USA

PL
3 records

SR 4400

Active

Lolium perenne L. · Perennial ryegrass

SEED RESEARCH OF OREGON

IT
3 records

Nearby in the species list Splendor, Split, Spoiler, Sponsor, Sport, Springfield, Sprinter, Sputknik, Sputnik, Spyglass, SR 4400, SR 4420, SR 4500, SR 4600, Sr 4700, Sr 4750, Stabilo, Stadion, Stamina, Stanford

Discussion: SR 4220

0 messages

Growing experience and notes on the entry. Comments are not part of the reference data and are not verified against primary sources.

Comments are open to signed-in readers. Sign in · Sign up