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.
Lolium perenne L. · Perennial ryegrass
MEYER WILLIAM / THE SCOTTS COMPANY
Solanum tuberosum L. · Potato
Lars Naested
Triticum aestivum L. · Bread wheat
Florimond Desprez Veuve et Fils, FR
Prunus avium (L.) L. · Sweet cherry
Výzkumný a Šlechtitelský ústav Ovocnářský Holovousy s.r.o.
Cichorium endivia L. · Endive
Henk Driessen
Capsicum annuum L. · Bell pepper
Bayer Holland B.V.
Raphanus sativus L. var. sativus · Radish
Jan Draaistra
Brassica napus var. napus · Rapeseed
DEUTSCHE SAATVEREDELUNG AG
Cucumis sativus L. · Cucumber
RIJK ZWAAN ZAADTEELT EN ZAADHANDEL B.V.
Triticum aestivum L. · Bread wheat
Danko Hodowla Roslin Sp.z.o.o.
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Yuksel Tohum, TR
Zea mays L. · Maize
ZEAINVENT TRNAVA
Cucumis sativus L. · Cucumber
Nunhems B.V.
Capsicum annuum L. · Bell pepper
Zoldesegtermesztesi Kutato Intezet RT (HU)
Brassica oleracea L. (Cauliflower Group) · Cauliflower
HM.CLAUSE
Cucumis sativus L. · Cucumber
RIJK ZWAAN Zaadteelt en Zaadhandel B.V.
Trifolium incarnatum L. · Crimson clover
S.A.CARNEAU
Lolium perenne L. · Perennial ryegrass
Euro Grass Breeding GmbH Co. KG
Petunia x hybrida hort. ex E. Vilm. · Garden petunia
Sakazaki Ushio
Solanum tuberosum L. · Potato
Saatzucht Hergen Berding
Vitis L. · Grapevine
GUIDO CIPRIANI/GABRIELE DI GASPERO/MICHELE MORGANTE/ENRICO PETERLUNGER/RAFFAELE TESTOLIN/ SIMONE DIEGO CASTELLARIN
Malus domestica (Suckow) Borkh. · Apple
Purdue Research Foundation (US)
Zea mays L. · Maize
Pioneer Overseas Corporation, Pioneer Hi-Bred International Inc.
Hordeum vulgare L. · Barley
NORDSAAT Saatzucht GmbH Frau Dr. Lissy Kuntze