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
PIONEER OVERSEAS CORPORATION
Zea mays L. · Maize
PIONEER OVERSEAS CORPORATION
Cucumis sativus L. · Cucumber
MORAVOSEED
Zea mays L. · Maize
Pioneer Hi-Bred International, Inc Pioneer Overseas Corporation
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Pop Vriend, NL
Zea mays L. · Maize
PIONEER OVERSEAS CORPORATION
Glycine max (L.) Merr. · Soybean
Pioneer Hi-Bred International Inc, Pioneer Hi-Bred International Inc
Zea mays L. · Maize
Pioneer Overseas Cor, USA
Zea mays L. · Maize
PIONEER OVERSEAS CORPORATION
Zea mays L. · Maize
Pioneer Overseas Corporation/ Pioneer Hi-Bred International Inc., USA
Zea mays L. · Maize
Pioneer Overseas Cor, USA
Helianthus annuus L. · Sunflower
Maisadour Semences
Lolium perenne L. · Perennial ryegrass
Innoseeds B.V. (NL)
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Rosa L. · Rose
Meilland, Alain A.|Antibes, France
Festuca rubra L. · Red fescue
RAGT 2n, FR
Allium fistulosum L. · Welsh onion
Jock Rudi
Lactuca sativa L. · Lettuce
ISI SEMENTI SPA
Lolium perenne L. · Perennial ryegrass
ZWAAN AND DE WILJES
Triticum durum Desf. · Durum wheat
Saatzucht Donau GmbH & Co.KG
Glycine max (L.) Merr. · Soybean
Lidea Frances SAS, F
Festuca arundinacea Schreb. · Tall fescue
Rutgers, The State University of New Jersey
Pisum sativum L. · Pea
RAGT 2N S.A.S
Helianthus annuus L. · Sunflower
PHILIPPE JOUVE