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.
Lolium perenne L. · Perennial ryegrass
KWS SAAT SE and CO KGAA
Helianthus annuus L. · Sunflower
Euralis Semences, F
Helianthus annuus L. · Sunflower
STRUBE ESPANA S.A.
Helianthus annuus L. · Sunflower
Euralis Semences, Mondonville FR
Festuca rubra L. · Red fescue
H.J.M. Barenbrug
Triticum aestivum L. · Bread wheat
S.A.S. Florimond Desprez Veuve & Fils
Lolium perenne L. · Perennial ryegrass
PIET ARTS
Helianthus annuus L. · Sunflower
SYNGENTA FRANCE S.A.S.
Koeleria macrantha (Ledeb.) Schult. · June grass
Barenbrug Holland BV (NL)
Lolium perenne L. · Perennial ryegrass
Theodorus P.M. op den Kamp
Triticum durum Desf. · Durum wheat
Serasem, FR
Helianthus annuus L. · Sunflower
SYNGENTA FRANCE S.A.S.
Capsicum annuum L. · Bell pepper
ZAO «SEMKO-YUNIOR»
Cucumis sativus L. · Cucumber
LUIS MULLOR
Lolium perenne L. · Perennial ryegrass
DLF-TRIFOLIUM DANSK PLANTEFORAEDLING
Cucumis sativus L. · Cucumber
RIJK ZWAAN ZAADTEELT EN ZAADHANDEL B.V.
Triticum aestivum L. · Bread wheat
Stacja Hodowli Roślin MODZURÓW Grupa Szelejewo sp. z o.o.
Solanum lycopersicum L. · Tomato
STEFANO CARLI
Malus domestica (Suckow) Borkh. · Apple
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, France
Solanum lycopersicum L. · Tomato
NUNHEMS B.V., BASF Quimica Colombiana S.A.
Cucurbita pepo L. · Field pumpkin
Saatzucht Gleisdort, A
Festuca arundinacea Schreb. · Tall fescue
Lebanon Seaboard Corporation (US)
Solanum tuberosum L. · Potato
R.P.GRAVELAND
Brassica oleracea L. (Broccoli Group) · Broccoli
Xiaoquanq Liang