Albara
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer 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.
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Cucumis sativus L. · Cucumber
BEJO ZADEN
Lactuca sativa L. · Lettuce
Rijk Zwaan Zadteelt en Zaadhandel B.V., Netherlands
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Lilium L. · Lily
KONINKLIJKE VAN ZANTEN B.V.
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
THEODORUS C.M. VAN KLEINWEE
Gerbera L. · Gerbera
JAN L. EVELEENS
Solanum lycopersicum L. · Tomato
Syngenta Crop Protection AG
Capsicum annuum L. · Bell pepper
NUNHEMS
Alstroemeria L. · Alstroemeria
van Zanten Plants b.v
Alstroemeria L. · Alstroemeria
van Zanten Plants b.v
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Alstroemeria L. · Alstroemeria
van Zanten Plants b.v
Clusia rosea Jacq.
EDWARD BRUINENN
Carica papaya L. · Papaya
Roberto Jaime García Padilla
Jacaranda mimosifolia D. Don
SAKAI KIYOSHI
Rubus idaeus L. · Red raspberry
NIELS ARTS
x Petchoa J. M. H. Shaw · Petchoa
TSUKAHARA JUN
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Lassen Canyon Nursery
Rosa L. · Rose
Poulsen Roser A/S
Medinilla Gaudich. · Medinilla
Nicolaas D.M. Steur^^^Elly Bak
Rosa L. · Rose
Poulsen Roser A/S, Poulsen Roser A/S
Rosa L. · Rose
Poulsen Roser A/S
Gerbera L. · Gerbera
FLORIST HOLLAND B.V.