Duchesse
Protection expiredLactuca sativa L. · Lettuce
Harris Moran Seed Company
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
Harris Moran Seed Company
Brassica oleracea L. (White Cabbage Group) · White cabbage
Bejo Zaden B.V.
Zea mays L. subsp. mays (Maize Group) · Maize
Maisadour Societe Cooperative Agricole (FR)
Chrysanthemum L. · Chrysanthemum
Meek, Jack M.|Salinas, CA / Duffett, William E.|Salinas, CA
Helianthus annuus L. · Sunflower
Fernandez, Anibal
Pisum sativum L. · Pea
SLUIS & GROOT BV (NL)
Pisum sativum L. · Pea
ARNDT| Dr. Hartmut Arndt
Solanum tuberosum L. · Potato
KARTZ VON KAMEKE
Capsicum annuum L. · Bell pepper
Golden West Seed Co.
Beta vulgaris Sugar Beet Group · Sugar beet
NOVARTIS SEEDS
Zea mays L. subsp. mays (Maize Group) · Maize
Asgrow France SA (FR)
Allium cepa L. var. cepa · Onion
Bejo Zaden B.V., De Groot en Slot B.V.
Streptocarpus Lindl. · Cape Primrose
SCHNEIDER REISKIRCHEN| Alfred Schneider
Brassica oleracea L. (White Cabbage Group) · White cabbage
DAEHNFELD L. A/S
Cucumis sativus L. · Cucumber
Hybrids Ellas Abee
Dianthus caryophyllus L. · Carnation
LEK-ZONEN
Gossypium hirsutum L. · Upland cotton
LUCIEN VERSCHRAEGE
Lilium L. · Lily
SCHENK| Ing. Pieter Cornelis Schenk
Zea mays L. · Maize
CAUSSADE SEMENCES
Solanum tuberosum L. · Potato
Station de Recherche du Comite Nord (FR)/Groupement Interprofessionel de la Pomme de Terre (FR)
Solanum tuberosum L. · Potato
Henri DEMESMAY (BURNOL) (FR)
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Geoponiko Spiti AEBE
Solanum melongena L. · Eggplant