Merkem

Active

Lolium perenne L. Perennial ryegrass · Agricultural · bred by RIJKSTATION VOOR PLANTEFOR

also searched as: меркем

Variety description

10 August 2026

The variety is tetraploid (4n) and belongs to the group of late-maturing varieties, characterized by a late onset of flowering. The plant shows stable dry matter yield with an even distribution throughout the growing season.

The variety possesses good winter hardiness, average resistance to lodging, and medium sod density. Susceptibility to rust is 5 points, and development after sowing is assessed as medium.

Sources6

Loading…

The list of sources is loaded via script—please enable JavaScript.

Countries of admission

7 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

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Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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

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

Parties

Breeder: RIJKSTATION VOOR PLANTEFOR 1 Developed the variety
Applicant: Rijksstation voor Plantenveredeling 66 Submitted the application to the register
Rights holder: VanderHave Grasses B.V. Holds the rights to the variety
Maintainer: RIJKSSTATION VOOR PLANTENVEREDELING 66 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

№ 205227
DK Denmark Terminated

№ 15387

Application

21 February 1992

Registration

15 February 1996

Terminated

2 February 2005
GB United Kingdom Terminated

№ 13/1190

Application

5 December 1994

Terminated

31 July 2001
DE Germany Terminated

№ WD 01003

Application

14 January 1997

Registration

25 September 2001

Terminated

7 January 2022
PL Poland Terminated

№ R R6315

Application

16 January 2006

Registration

8 March 2010

Terminated

9 February 2023
GB United Kingdom Active

№ 13/12810

Application

16 October 2018

Registration

30 November 2018
SI Slovenia Application submitted

№ LOP046

Application

23 November 2022

Registry	Number	Application	Registration	Terminated	Status
QZ European Union	205227	—	—	—	Active
DK Denmark	15387	21 February 1992	15 February 1996	2 February 2005	Terminated
GB United Kingdom	13/1190	5 December 1994	—	31 July 2001	Terminated
DE Germany	WD 01003	14 January 1997	25 September 2001	7 January 2022	Terminated
PL Poland	R R6315	16 January 2006	8 March 2010	9 February 2023	Terminated
GB United Kingdom	13/12810	16 October 2018	30 November 2018	—	Active
SI Slovenia	LOP046	23 November 2022	—	—	Application submitted

Plant breeders' rights

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

Netherlands № RGE774

Protection expired

Application filed 5 December 1991
Registered 4 April 1996
Entry closed 2 June 1997

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

Breeder

RIJKSTATION VOOR PLANTEFOR

breeder code RVP 730 MERKEM RVP

All 1 variety of company

Registry records

Total records: 13
Jurisdictions shown: 7
Not yet disclosed: 1
First registration: 1996

Same species