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.
Oryza sativa L. · Rice
Ente Nazionale Risi, BASF Agrochemical Products B.V.
Lolium perenne L. · Perennial ryegrass
JACKLIN SEED
Pisum sativum L. · Pea
LEMAIRE DEFFONTAINES S.A.S.
Cucumis sativus L. · Cucumber
Yuksel Tohum, TR
Triticum durum Desf. · Durum wheat
G.A.E. RECHERCHE
Lolium perenne L. · Perennial ryegrass
PGG Wrightson Seeds
Triticum aestivum L. · Bread wheat
Poljoprivredni Institut Osijek, HR
Poa pratensis L. · Kentucky bluegrass
Novel AG
Brassica oleracea L. (Broccoli Group) · Broccoli
Bejo Zaden, NL
Cucumis sativus L. · Cucumber
Nunhems B.V., Nunhems B.V.
Festuca rubra L. · Red fescue
Semences De France (FR)
Lolium multiflorum Lam. var. westerwoldicum Wittm. · Westerwolds Ryegrass
DLF SEEDS A/S
Medicago sativa L. · Alfalfa
Lietuvos agrarinių ir miškų mokslų centras
Festuca arundinacea Schreb. · Tall fescue
Peak Plant Genetics, LLC & Rutgers, The State University of New Jersey
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Solanum lycopersicum L. · Tomato
Martjin van Stee
Poa pratensis L. · Kentucky bluegrass
DLF Seeds A/S
Solanum tuberosum L. · Potato
Station de Recherche du ComitÚ Nord
Lolium perenne L. · Perennial ryegrass
DLF Trifolium A-S, DK
Festuca arundinacea Schreb. · Tall fescue
KWS
Poa pratensis L. · Kentucky bluegrass
NEXGEN
Lolium perenne L. · Perennial ryegrass
DLF Seeds A-S, DK
Poa pratensis L. · Kentucky bluegrass
DLF Seeds A/S
Poa pratensis L. · Kentucky bluegrass
Rutgers, The State University of New Jersey - Cook College