WINTWR BUTTERKOPF
Protection expiredLactuca sativa L. · Lettuce
Public domain
Plant breeders' rights are granted for a limited term. Upon expiration, the variety enters the public domain: its seeds can be propagated and sold without the rights holder's license.
Recent years are the most sought-after: the variety is free to use but still in production.
Lactuca sativa L. · Lettuce
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
Avena sativa L. · Oat
Pyrus communis L. · European pear
Lactuca sativa L. var. longifolia Lam. · Romaine lettuce
Allium cepa L. var. cepa · Onion
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Avena sativa L. · Oat
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Zea mays L. subsp. mays (Maize Group) · Maize
Nickerson SA (FR)
Vitis L. · Grapevine
Pisum sativum L. · Pea
Cichorium intybus L. · Chicory
Cucumis sativus L. · Cucumber
Vitis L. · Grapevine
Helianthus annuus L. · Sunflower
Allium schoenoprasum L. · Chives
Nicotiana tabacum L. · Tobacco
Duhanski Institut d.d. (HR)
Nicotiana tabacum L. · Tobacco
Duhanski Institut d.d. (HR)
Zea mays L. · Maize
MONSANTO TECHNOLOGY
Nicotiana tabacum L. · Tobacco
HAO-DEMETER Cotton and Industrial Crops Institute
Nicotiana tabacum L. · Tobacco
HAO-DEMETER Cotton and Industrial Crops Institute
Arachis hypogaea L. · Peanut
Cynara cardunculus L. · Cardoon