Variety traits
Tolerance is the ability of a variety to maintain productivity and crop quality when exposed to pathogens or abiotic stresses. Unlike resistant varieties, tolerant plants are affected by infection but compensate for the damage without significant yield loss.
Mentioned in descriptions 20 866 varieties reference book.
Variety tolerance is the ability of a plant to withstand pathogen infection or the influence of abiotic factors, such as drought or salinity, without a significant decrease in productivity. In contrast to resistance, where the plant blocks the development of the pathogen, a tolerant variety becomes infected and bears signs of the disease, yet its physiological processes allow it to maintain a satisfactory yield level.
Tolerance assessment is conducted under disease pressure conditions by comparing the yield of varieties with the same degree of infection. When analyzing diseases, rating scales are used, where varieties with a high degree of infection but an insignificant drop in yield are classified as tolerant. Physiological indicators of resistance to abiotic stresses include data on germination, root system development, and the condition of the photosynthetic apparatus.
The complex trait of tolerance is expressed through the yield reduction coefficient: the lower the drop in productivity under strong factor impact, the higher the indicator. It is agronomically important that tolerant varieties act as latent carriers of pathogens, contributing to their accumulation in the field, which requires increased attention to phytosanitary monitoring even when plants appear healthy.
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.
Beta vulgaris Sugar Beet Group · Sugar beet
KUTNOWSKA HODOWLA BURAKA CUKROWEGO Sp.z o.o.
Cucumis sativus L. · Cucumber
VEGETABLE MONSANTO B.V.
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
HAZERA SEEDS B.V.
Beta vulgaris Sugar Beet Group · Sugar beet
Strube D&S GMBH
Lactuca sativa L. · Lettuce
SYNGENTA SEEDS B.V.
Brassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts
TAKII EUROPE B V
Triticum aestivum L. · Bread wheat
Saaten Union Recherche (FR)
Triticum durum Desf. · Durum wheat
Fratelli Menzo di Menzo Epifanio Salvatore & C. S.A.S.
Secale cereale L. · Rye
Hodowla Roslin Smolice Sp.z o.o Grupa IHAR
Dactylis glomerata L. · Cocksfoot
BARENBRUG HOLLAND B.V.
Festuca arundinacea Schreb. · Tall fescue
DLF Trifolium A-S, DK
Triticum aestivum L. · Bread wheat
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Syngenta Seeds B.V.
Lactuca sativa L. · Lettuce
Yaojin Peng
Lactuca sativa L. · Lettuce
Seminis Vegetable Seeds
Triticum aestivum L. · Bread wheat
NORDSAAT SAATZUCHT
Helianthus annuus L. · Sunflower
Neno Nenov
Festuca rubra L. · Red fescue
PURE SEED TESTING
Capsicum annuum L. · Bell pepper
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Cucumis sativus L. · Cucumber
SEMO a.s
Hordeum vulgare L. · Barley
Poljoprivredni Institut Osijek, HR
Brassica napus var. napus · Rapeseed
FORHAN| Marc Forhan c/o Zeneca Seeds / STOENESCU| Florin Stoenesu c/o Zeneca Seeds / BURNS| Dale Burns c/o Zeneca Seeds
Cucumis sativus L. · Cucumber
W. LEGUTKO PRZEDSIEBIORSTWO HODOWLANO NASIENNE SP.Z.O.O