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.
Lactuca sativa L. · Lettuce
Enza Zaden Seed Operations B.V.
Brassica oleracea L. (Kohlrabi Group) · Kohlrabi
BEJO ZADEN
Cucumis sativus L. · Cucumber
GAVRISh SERGEJ FEDOROVICh / PORTYaNKIN ALEKSEJ EVGEN'EVICh / ShAMShINA ANNA VYaChESLAVOVNA / ShEVKUNOV VALERIJ NIKOLAEVICh
Cucumis melo L. · Melon
HM.Clause S.A.S.
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
PETOSEED CO
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
Poa pratensis L. · Kentucky bluegrass
CENTRO DI RICERCA MIGLIORAMENTO GENETICO PIANTE AGRARIE S.R.L. C.M.G.P.A.
Triticum durum Desf. · Durum wheat
Ets Claude Camille Benoist SA (FR)
Zea mays L. · Maize
KWS SAAT SE & CO.KGAA
Hordeum vulgare L. · Barley
Marina Gramatikova, Dragomir Valchev, Radka Stamatova
Hordeum vulgare L. · Barley
UNICORN PLANT BREEDERS
Cucumis sativus L. · Cucumber
TAKII EUROPE B V
Hordeum vulgare L. · Barley
PLANT BREEDING INTERNATIONAL CAMBRIDGE
Cucumis sativus L. · Cucumber
MORAVOSEED
Hordeum vulgare L. · Barley
DR. J. ACKERMANN
Solanum lycopersicum L. · Tomato
HAZERA SEEDS BV
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Vilmorin SA (FR)
Vitis vinifera L. · Common grape vine
MARIA CAROLINA UQUILLAS HERRERA
Lotus corniculatus L. · Bird's-foot trefoil
INSTITUTO NACIONAL DE INVESTIGACION AGROPECUARIA (INIA)
Capsicum annuum L. · Bell pepper
CLAUSE VEGETABLE SEEDS, FR
Malus domestica (Suckow) Borkh. · Apple
Simone Bühlmann-Schütz Agroscope
Helianthus annuus L. · Sunflower
Syngenta Seeds
Oryza sativa L. · Rice
Konstantin Kamishev
Pisum sativum L. · Pea
Limagrain UK