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.
Cucumis sativus L. · Cucumber
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Cucumis sativus L. · Cucumber
MORAVOSEED
Capsicum annuum L. · Bell pepper
Silvester de Nooijer
Beta vulgaris Sugar Beet Group · Sugar beet
Strube D&S GMBH
Alopecurus pratensis L. · Meadow foxtail
TAGRO Červený Dvůr, spol. s r.o. (CZ)
Beta vulgaris Sugar Beet Group · Sugar beet
STRUBE D and S GMBH
Brassica oleracea L. (White Cabbage Group) · White cabbage
Syngenta Crop Protection AG
Helianthus annuus L. · Sunflower
ISEA S.R.L. / SUPERSEED
Brassica oleracea L. (White Cabbage Group) · White cabbage
Hazera Seeds B.V.
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Cucumis sativus L. · Cucumber
ZERAIM GEDERA
Cucumis sativus L. · Cucumber
Seminis Vegetable Seeds
Brassica oleracea L. (White Cabbage Group) · White cabbage
SYNGENTA SEEDS B.V.
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG, CH
Solanum lycopersicum L. · Tomato
UO «BELORUSSKAYA GOSUDARSTVENNAYA ORDENOV OKTYABRSKOJ REVOLYUCII I TRUDOVOGO KRASNOGO ZNAMENI SELSKOXOZYAJSTVENNAYA AKADEMIYA»
Glycine max (L.) Merr. · Soybean
Poljoprivredni Institut Osijek, HR
Zea mays L. · Maize
Syngenta participation AG
Zea mays L. · Maize
Syngenta participation AG
Triticum aestivum L. · Bread wheat
ASUR Plant Breeding SAS, FR
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG
Solanum tuberosum L. · Potato
STET HOLLAND
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
IFSI Sweet Corn Division
Zea mays L. · Maize
Syngenta Crop Protection,CH
Lolium perenne L. · Perennial ryegrass
PURE SEED TESTING