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 napus var. napus · Rapeseed
Almut Hampe
Lactuca sativa L. · Lettuce
Les Graines Caillard Sa (FR)
x Triticosecale Wittm. ex A. Camus · Triticale
Nordsaat Saatzuchtgesellschaft mbH
Beta vulgaris Sugar Beet Group · Sugar beet
Agra Societa Del Seme Srl (IT)
Zea mays L. · Maize
Philippe Moreau
Festuca trachyphylla (Hack.) Hack. · Hard fescue
Peak Plant Genetics
Cichorium intybus L. (Industrial Chicory Group) · Chicory
SAS FLORIMOND-DESPREZ Veuve et Fils
Hordeum vulgare L. · Barley
Syngenta Seeds
Festuca rubra L. · Red fescue
TURF-SEED INC
Brassica oleracea L. (White Cabbage Group) · White cabbage
Seminis Vegetable Seeds
Triticum aestivum L. · Bread wheat
Hagberg, Arne
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Zea mays L. · Maize
Syngenta participation AG
Zea mays L. · Maize
Syngenta Crop Protection AG
Zea mays L. · Maize
Syngenta France SAS
Beta vulgaris Sugar Beet Group · Sugar beet
STRUBE HERMANN| Dr. Hermann Strube
Zea mays L. · Maize
MAS SEEDS
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Zea mays L. · Maize
Clod Tabel
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Brassica napus L. · Rapeseed
Deutsche Saatveredelung GmbH., Lippstadt DE
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE, DE
Zea mays L. subsp. mays (Maize Group) · Maize
PIONEER HI-BRED INTERNATIONAL
Prunus mahaleb L. · Saint Lucie cherry