Lactuca sativaL.Lettuce· Vegetables· bred by Rijk Zwaan Zaadteelt en Zaadhandel B.V.
also searched as: лета
Variety description
10 August 2026
The lettuce variety Letha, known by the code designation 42-123 RZ, belongs to the crop Lactuca sativa L. and is used in professional vegetable growing.
In scientific publications dedicated to the control of Fusarium wilt, the variety Letha is considered in the context of susceptibility to the pathogen Fusarium oxysporum f. sp. lactucae (race Fol:4) and does not possess a high degree of resistance to this disease.
Sources2
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.
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data for which we do not publish: their registry licenses have not yet been verified.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
Rijk Zwaan Zaadteelt en Zaadhandel B.V.Developed the variety
Applicant
Rijk Zwaan Zaadteelt en Zaadhandel B.V.Submitted the application to the register
Maintainer
Rijk Zwaan Zaadteelt en Zaadhandel B.V.Responsible for variety maintenance
Admission to trade
The variety is listed in the national registry — its seeds are authorized for sale in this country.
NL
Netherlands
Withdrawn
№ SLA4223
Application
15 April 2019
Terminated
4 September 2020
Registry
Number
Application
Registration
Terminated
Status
NL
Netherlands
SLA4223
15 April 2019
—
4 September 2020
Withdrawn
Plant breeders' rights
The right is granted for a limited term: propagation of the variety requires a license from the rights holder.
Netherlands№ SLA4223
Withdrawn
Application filed
15 April 2019
Registered
—
Entry closed
4 September 2020
More 1 record
protections in other jurisdictions are shown on the map above.
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