Thalassa

Active

Lolium perenne L. Perennial ryegrass · Agricultural · bred by MOMMERSTEEG INTERNATIONAL

also searched as: таласса

Variety description

10 August 2026

The variety is tetraploid and belongs to the late maturity group with a heading period of about 59 days. The plant is characterized by average indicators of height and initial development intensity.

The ryegrass is intended for forage use through grazing or mowing. The variety possesses good regenerative capacity and resistance to trampling, while maintaining sensitivity to snowless frosts and late spring frosts.

Sources8

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Countries of admission

5 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.

IS FI NO SE EE IE GB DK LV LT NL DE PL BY PT ES FR BE CZ SK UA RU LU CH AT HU MD IT SI HR RS RO MT GR BG CY

QM QZ

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Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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

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

Parties

Breeder: MOMMERSTEEG INTERNATIONAL 351 Developed the variety
Applicant: MOMMERSTEEG INTERNATIONAL 351 Submitted the application to the register
Rights holder: DLF Seeds A/S Holds the rights to the variety
Maintainer: MOMMERSTEEG INTERNATIONAL 351 Responsible for variety maintenance

Admission to trade

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

QZ European Union Active

№ 205805
NL Netherlands Terminated

№ RGE1169

Application

3 January 2002

Registration

4 May 2006

Terminated

2 May 2023
GB United Kingdom Active

№ 13/2052

Application

4 January 2002

Terminated

19 May 2006
DE Germany Active

№ WD 01267

Application

8 January 2002

Registration

30 November 2006
FR France Withdrawn

№ 1018632

Application

1 December 2005

Terminated

22 December 2005

Registry	Number	Application	Registration	Terminated	Status
QZ European Union	205805	—	—	—	Active
NL Netherlands	RGE1169	3 January 2002	4 May 2006	2 May 2023	Terminated
GB United Kingdom	13/2052	4 January 2002	—	19 May 2006	Active
DE Germany	WD 01267	8 January 2002	30 November 2006	—	Active
FR France	1018632	1 December 2005	—	22 December 2005	Withdrawn

Plant breeders' rights

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

Netherlands № RGE1169

Active

Application filed 30 January 2002
Registered 18 August 2005
Currently active indefinite in the register

Records are sourced from official registry publications. Data sources and legal status

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Breeder

MOMMERSTEEG INTERNATIONAL

breeder code ADV Lp 2951

All 351 varieties of company

Registry records

Total records: 8
Jurisdictions shown: 5
Not yet disclosed: 1
First registration: 2005

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