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.
Glycine max (L.) Merr. · Soybean
Mehiesi Istvan, Varha Dzhozefne, Takaks Mariia, Nemesne Varha Anna, Falusi Dzhanosne, Palvolhii Laslo, Falusi Dzhanos,
Zea mays L. · Maize
Posch Genry
Zea mays L. · Maize
PIONEER HI-BRED INTERNATIONAL
Zea mays L. · Maize
PIONEER HI-BRED INTERNATIONAL
Zea mays L. · Maize
PIONEER OVERSEAS CORPORATION
Beta vulgaris Sugar Beet Group · Sugar beet
SESVanderhave NV
Solanum lycopersicum L. · Tomato
Sakata, J
Lolium perenne L. · Perennial ryegrass
GIE de Recherche Europeenne sur les Gazons (FR)
Zea mays L. · Maize
PIONEER OVERSEAS CORPORATION
Allium porrum L. · Leek
Enza Zaden Beheer
Pisum sativum L. · Pea
Syngenta Seeds B.V.
Solanum lycopersicum L. · Tomato
OOO 'AGROFIRMA PARTNER'
Helianthus annuus L. · Sunflower
RAGT 2N S.A.S
Allium cepa L. · Onion
ISI SEMENTI SPA
Beta vulgaris Sugar Beet Group · Sugar beet
Florimond Desprez Veuve et Fils, FR
Lactuca sativa L. · Lettuce
Seminis Vegetable Seeds
Glycine max (L.) Merr. · Soybean
Sylvain Legay
Festuca arundinacea Schreb. · Tall fescue
Zelder BV (NL)
Hordeum vulgare L. · Barley
LEMAIRE DEFFONTAINES S.A.S.
Helianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION
Solanum melongena L. · Eggplant
UNITED GENETICS SEEDS CO
Helianthus annuus L. · Sunflower
NUSEED EUROPE
Cucumis sativus L. · Cucumber
SEMO a.s
Allium cepa L. · Onion
Scott Hendricks