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.
Hordeum vulgare L. · Barley
Società Produttori Sementi S.p.A.^^^Alberto Gianinetti^^^Nadia Faccini^^^Donata Pagani^^^Marina Baronchelli^^^Camillo Corvi
Brassica napus var. napus · Rapeseed
PIONEER OVERSEAS CORPORATION
Lactuca sativa L. · Lettuce
Vilmorin-Mikado S.A.S.
Brassica oleracea L. (Broccoli Group) · Broccoli
Nozaki Saishujo Ltd (JP)
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Phleum pratense L. · Timothy grass
Danko Hodowla Roslin Sp.z.o.o.
Solanum lycopersicum L. · Tomato
W. LEGUTKO PRZEDSIEBIORSTWO HODOWLANO NASIENNE SP.Z.O.O
Pisum sativum L. · Pea
Limagrain UK
Lactuca sativa L. · Lettuce
Vilmorin-Mikado S.A.S.
Medicago sativa L. · Alfalfa
M. Mirchev, M. Maslinkov, D. Dekov, D. Petkova, V. Toromanova
Glycine max (L.) Merr. · Soybean
PIONEER HI-BRED INT
Medicago sativa L. · Alfalfa
PIONEER HI-BRED INTERNATIONAL
Lolium perenne L. · Perennial ryegrass
D J Van der Have BV (NL)
x Festulolium Aschers. et Graebn. · Festulolium
Lietuvos agrarinių ir miškų mokslų centro filialas Žemdirbystės institutas
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Solanum lycopersicum L. · Tomato
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Glycine max (L.) Merr. · Soybean
PIONEER HI-BRED INT
Zea mays L. · Maize
PIONEER HI-BRED INTERNATIONAL
Zea mays L. · Maize
PIONEER HI-BRED INTERNATIONAL
Glycine max (L.) Merr. · Soybean
PIONEER HI-BRED INTERNATIONAL
Rosa L. · Rose
Poulsen Roser A/S
Zea mays L. · Maize
PIONEER HI-BRED INTERNATIONAL
Capsicum annuum L. · Bell pepper
Monsanto Vegetable IP Management B.V.
Gossypium hirsutum L. · Upland cotton
Golden West Seed Co.