Primared
Protection expiredSolanum lycopersicum L. · Tomato
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.
Solanum lycopersicum L. · Tomato
Cucumis sativus L. · Cucumber
Zea mays L. · Maize
Cucumis melo L. · Melon
Allium porrum L. · Leek
Zea mays L. subsp. mays (Popcorn Group) · Popcorn
Cucurbita pepo L. · Field pumpkin
Hippophae rhamnoides L. · Sea buckthorn
Hordeum vulgare L. · Barley
Allium cepa L. · Onion
Cucumis sativus L. · Cucumber
Zea mays L. subsp. mays (Maize Group) · Maize
Pioneer Hi-Bred International Inc (US)
Zea mays L. · Maize
SEIFERT ROBERT
Capsicum annuum L. · Bell pepper
Zea mays L. subsp. mays (Maize Group) · Maize
Beta vulgaris Sugar Beet Group · Sugar beet
Cicer arietinum L. · Chickpea
Lactuca sativa L. · Lettuce
Allium cepa L. · Onion
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Capsicum annuum L. · Bell pepper
Lolium multiflorum Lam. · Italian ryegrass
Brassica oleracea L. (White Cabbage Group) · White cabbage
Zea mays L. · Maize