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.
Helianthus annuus L. · Sunflower
NUSEED EUROPE
Brassica napus var. napus · Rapeseed
Syngenta Crop Protection AG, Seeds Division, CH
Agrostis stolonifera L. · Creeping bentgrass
DLF Seeds A-S, DK
Lactuca sativa L. · Lettuce
Les Graines Caillard Sa (FR)
Brassica napus var. napus · Rapeseed
KWS| KWS SAAT AG
Cucumis melo L. · Melon
Syngenta Seeds BV (NL)
Solanum lycopersicum L. · Tomato
Johannes Barten
Zea mays L. · Maize
TAUCHER ROBERT
Zea mays L. · Maize
Zhoel` Meun`er
Brassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts
Syngenta Seeds B.V. (NL)
Brassica napus var. napus · Rapeseed
Gertz Andreas
Brassica napus var. napus · Rapeseed
LIMAGRAIN EUROPE
Rosa L. · Rose
Wilhelm Kordes / Tim-Hermann Kordes / Margarita Kordes in Fa. W. Kordes' Söhne Rosenschulen GmbH & Co KG
Triticum aestivum L. · Bread wheat
Limagrain Europe S.A.S
Sorghum bicolor (L.) Moench · Sorghum
KWS, D
Glycine max (L.) Merr. · Soybean
Poljoprivredni Institut Osijek, HR
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
Lolium perenne L. · Perennial ryegrass
Euro Grass Breeding GmbH Co. KG
Hordeum vulgare L. · Barley
KWS MOMONT RECHERCHE SARL, FR
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Nickerson Zwaan B.V. (NL)
Brassica napus var. napus · Rapeseed
KWS SAAT SE & CO.KGAA
Triticum aestivum L. · Bread wheat
KWS Momont, F
Brassica napus var. napus · Rapeseed
KWS MOMONT RECHERCHE SARL, FR
Brassica napus var. napus · Rapeseed
KWS SAAT SE & CO.KGAA