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.
Solanum lycopersicum L. · Tomato
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Triticum durum Desf. · Durum wheat
SEMILLAS BATLLE, S.A.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Lolium perenne L. · Perennial ryegrass
Carneau Freres SA (FR)
Cucumis sativus L. · Cucumber
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Allium porrum L. · Leek
Domaine Public (FR)
Rosa L. · Rose
ALAIN ANTOINE MEILLAND (FR)
Ribes nigrum L. · Blackcurrant
Tereshcenko IAna IUriivna, Yareshcenko Oleksandr Mykolaiovych,
Solanum melongena L. · Eggplant
Tovarystvo z obmezhenoiu vidpovidalnistiu "SPARK SIDZ"
Zea mays L. subsp. mays (Maize Group) · Maize
MBS Europe (FR)
Zea mays L. · Maize
MAS SEEDS
Allium cepa L. · Onion
ISI SEMENTI SPA
Rosa L. · Rose
ALAIN ANTOINE MEILLAND (FR)
Cucumis sativus L. · Cucumber
Instytut ovochivnytstva i bashtannytstva Natsionalnoi akademii ahrarnykh nauk Ukrainy
Zea mays L. subsp. Mays · Corn
Maisadour Semences
Zea mays L. · Maize
HUNGAROSEED KFT
Rosa L. · Rose
Mark Gergely
Brassica oleracea L. (Marrowstem Kale Group) · Marrow-stem kale
Dr. Heinrich Enderlein
Vitis vinifera L. · Common grape vine
COLUCCI EMILIA / FILIPPETTI ILARIA / INTRIERI CESARE
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Dave Fisher
Rosa L. · Rose
Dominique MASSAD (FR)
Festuca rubra L. · Red fescue
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Breus Oksana Serhiivna, Parii IUliia Oleksandrivna, Parii IAroslav Fedorovych, Koval`chuk Zoreslava Volodymyrivna, Kulish Ol`ha IUriivna, Parii Myroslav Fedorovych,
Cucumis sativus L. · Cucumber
Dymchenko Tetiana Mykolaivna, Muzhylko Viktor Valentynovych,