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.
Triticum aestivum L. · Bread wheat
Secobra Recherches, F
Daucus carota L. · Carrot
Robert Prieur
Allium porrum L. · Leek
RIJK ZWAAN ZAADTEELT EN ZAADHANDEL B.V.
Helianthus annuus L. · Sunflower
Nidera, AR
Allium porrum L. · Leek
Paul Degreef
Brassica rapa L. subsp. pekinensis (Lour.) Hanelt · Napa cabbage
SSC JP
Brassica napus var. napus · Rapeseed
Norddeutsche Pflanzenzucht Hans-Georg Lembke KG
Brassica napus var. napus · Rapeseed
KWS SAAT SE & CO.KGAA
Capsicum annuum L. · Bell pepper
Seminis Vegetable Seeds
Triticum aestivum L. · Bread wheat
Poznanska Hodowla Roslin Sp. z o.o
Triticum durum Desf. · Durum wheat
FLORIMOND DESPREZ VEUVE ET FILS
Cucumis sativus L. · Cucumber
Paul Degreef
Hordeum vulgare L. · Barley
Syngenta Seeds, F
Festuca arundinacea Schreb. · Tall fescue
Interstate Seed Company (US)
Poa trivialis L. · Rough bluegrass
JACKLIN SEED
Festuca arundinacea Schreb. · Tall fescue
Top Green (FR)
Brassica oleracea L. (White Cabbage Group) · White cabbage
MONSANTO HOLLAND BV , NL
Festuca arundinacea Schreb. · Tall fescue
R.V. FRAKES AND J.R. COWAN
Cucumis melo L. · Melon
Ralf Kuijpers
Beta vulgaris Sugar Beet Group · Sugar beet
Miroslaw Lakomy
Helianthus annuus L. · Sunflower
MAY AGRO SEED COPR.
Solanum tuberosum L. · Potato
Justus Bohm
Hordeum vulgare L. · Barley
Saatzucht Edelhof, A
Helianthus annuus L. · Sunflower
Euralis Semences, F