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.
Brassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts
Thaam Wijnker
Capsicum annuum L. · Bell pepper
Tezier SA (FR)
Triticum aestivum L. · Bread wheat
Secobra Recherches, F
Lolium perenne L. · Perennial ryegrass
Pickseed West Inc (US)
Helianthus annuus L. · Sunflower
Pioneer Overseas Cor, USA
Zea mays L. · Maize
PIONEER OVERSEAS CORPORATION
Festuca trachyphylla (Hack.) Hack. · Hard fescue
Zajac Performance Seeds (US)
Zea mays L. · Maize
Pioneer Overseas Corporation, USA
Brassica oleracea L. (Red Cabbage Group) · Red cabbage
BEJO ZADEN
Zea mays L. · Maize
Pioneer Overseas Cor, USA
Gossypium hirsutum L. · Upland cotton
BASF AGRICULTURAL SOLUTIONS US LLC
Helianthus annuus L. · Sunflower
Sadik El Sayed
Cucumis sativus L. · Cucumber
Nunhems B.V.
Helianthus annuus L. · Sunflower
HILLESHOG - NK SPA
Solanum lycopersicum L. · Tomato
ZETA SEEDS S.L.
Festuca rubra L. · Red fescue
DLF SEEDS A/S
Helianthus annuus L. · Sunflower
Pioneer Overseas Cor, USA
Festuca arundinacea Schreb. · Tall fescue
Pickseed USA, Inc. & Rutgers, The State University of New Jersey
Helianthus annuus L. · Sunflower
Sadik El Sayed
Helianthus annuus L. · Sunflower
Institut za ratarstvo i povrtarstvo, Novi Sad
Cucumis sativus L. · Cucumber
ZKI, H
Petroselinum crispum (Mill.) Nyman ex A. W. Hill · Parsley
HM.CLAUSE
Trifolium repens L. · White clover
Planteforsk
Trifolium repens L. · White clover
DLF-Seeds A/S