Lactuca sativaL.Lettuce· Vegetables· bred by Rijk Zwaan Zaadteelt en Zaadhandel B.V.
also searched as: корвинас
Variety description
10 August 2026
The variety forms large, dense, perfectly round heads on vigorous plants. The leaves have a glossy bright green color. Due to its structure, the variety is intended for both the fresh market and industrial processing.
The plant features Knox technology, which is a natural trait that slows down the browning process of leaf cut surfaces, extending the shelf life of the product. The variety shows high resistance to downy mildew strains Bl:16–37EU, lettuce aphid (Nr:0), and internal tipburn (Pb), as well as intermediate resistance to lettuce mosaic virus (LMV:1).
The variety is characterized as versatile and flexible. It is recommended for cultivation in various periods, with particular note of its effectiveness in transitional seasons — spring and autumn.
Sources5
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Countries of admission
2 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.
Variety registered as early as 2
jurisdictions,
data for which we do not publish: their registry licenses have not yet been verified.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
Rights holder
Rijk Zwaan Zaadteelt en Zaadhandel B.V.Holds the rights to the variety
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.
QZ
European Union
Active
№ 271179
Registration
15 March 2021
NL
Netherlands
Active
№ SLA4399
Application
30 January 2020
Registration
15 March 2021
GB
United Kingdom
Active
№ 19/755
Application
30 August 2024
Registration
31 January 2025
Registry
Number
Application
Registration
Terminated
Status
QZ
European Union
271179
—
15 March 2021
—
Active
NL
Netherlands
SLA4399
30 January 2020
15 March 2021
—
Active
GB
United Kingdom
19/755
30 August 2024
31 January 2025
—
Active
Plant breeders' rights
The right is granted for a limited term: propagation of the variety requires a license from the rights holder.
Netherlands№ SLA4399
Active
Application filed
30 January 2020
Registered
15 March 2021
Currently active
indefinite in the register
More 3 records
protections in other jurisdictions are shown on the map above.
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