Eder
ActiveBrassica oleracea L. (Kohlrabi Group) · Kohlrabi
Rijk Zwaan B.V.
Cultivation
Protected cultivation involves the use of specialized varieties and hybrids adapted to the specific microclimate of greenhouses, hotbeds, and controlled-environment agriculture systems.
Mentioned in descriptions 24 262 varieties reference book.
Protected cultivation comprises a system of structures ranging from simple film shelters to high-tech greenhouses with automated climate control. Plants in such conditions develop under different levels of lighting, humidity, and temperature regimes, as well as in limited root zone volumes, which requires the selection of genetically adapted material, predominantly F1 hybrids.
The choice of a variety for closed environments depends on the crop's ability to develop fully under artificial lighting, its growth type, and compatibility with cultivation technologies, including substrate-based systems. Variety assessment is based on morphological traits, productivity, and the conformity of fruit characteristics to requirements for marketability, keeping quality, and transportability.
The resistance and high productivity of greenhouse varieties are driven by breeding for immunity to specific pathogens, such as powdery mildew, various types of wilts, viruses, and bacterial infections. Additional critical traits include parthenocarpy, which ensures fruit set without pollination, and the ability to control the balance between generative development and sugar accumulation.
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Brassica oleracea L. (Kohlrabi Group) · Kohlrabi
Rijk Zwaan B.V.
Cucumis sativus L. · Cucumber
Royal Sluis (NL)
Solanum lycopersicum L. · Tomato
Seminis Vegetable Seeds
Solanum lycopersicum L. · Tomato
Bejo Zaden B.V.
Cucumis sativus L. · Cucumber
Hazera Seeds B.V.
Solanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
Cucumis sativus L. · Cucumber
ALEKSEEV YuRIJ BORISOVICh
Cucumis sativus L. · Cucumber
RIJK ZWAAN SAMENCHUHT UND SAMENHANOLLUNG GmbH, DE
Brassica oleracea L. (Red Cabbage Group) · Red cabbage
HM.CLAUSE
Capsicum annuum L. · Bell pepper
VILMORIN, S.A.
Solanum lycopersicum L. · Tomato
Syngenta Seeds, NL
Solanum lycopersicum L. · Tomato
Vilmorin SA (FR)
Phaseolus vulgaris L. · Common bean
Pop Vriend Seeds B.V.
Cucumis sativus L. · Cucumber
Syngenta Seeds BV (NL)
Solanum lycopersicum L. · Tomato
WESTERN SEED ESPAÑA, S.A.
Rosa L. · Rose
Voorden, D.G.
Cucumis sativus L. · Cucumber
SEMO a.s
Solanum lycopersicum L. · Tomato
Vilmorin SA (FR)
Cucumis melo L. · Melon
Monstanto, NL
Capsicum annuum L. · Bell pepper
Rijk Zwaan B.V. (NL)
Capsicum annuum L. · Bell pepper
Semo, CZ
Cucumis sativus L. · Cucumber
Hazera Seeds B.V.
Capsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
Capsicum annuum L. · Bell pepper
SAS HM Clause (FR)