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.
Poa pratensis L. · Kentucky bluegrass
J.R. Simplot Company d/b/a Jac
Capsicum annuum L. · Bell pepper
Syngenta Seeds, NL
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
Brassica oleracea L. (Cauliflower Group) · Cauliflower
VEGETABLE MONSANTO B.V.
Prunus dulcis (Mill.) D. A. Webb · Almond
IRTA CENTRE MAS BOVE
Festuca arundinacea Schreb. · Tall fescue
DLF SEEDS A/S
Lolium perenne L. · Perennial ryegrass
Pickseed USA, Inc. & Rutgers, The State University of New Jersey
Phaseolus vulgaris L. · Common bean
Syngenta Seeds
Lolium perenne L. · Perennial ryegrass
International Seeds Inc. (US)
Prunus dulcis (Mill.) D. A. Webb · Almond
IRTA CENTRE MAS BOVE
Festuca arundinacea Schreb. · Tall fescue
DLF Trifolium A-S, DK
Allium fistulosum L. · Welsh onion
Seminis Vegetable Seeds
Vaccinium virgatum Aiton · Rabbit-eye blueberry
Fall Creek Farm & Nursery Inc., Fall Creek Farm & Nursery Inc.
Rosa L. · Rose
HANS JURGEN EVERS (T)
x Petchoa J. M. H. Shaw · Petchoa
UI AKINOBU|OISHI YUKIHISA|ISHIKAWA SHIN
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Teunis Sikma
Zea mays L. · Maize
LEIPERT RAINER
Triticum aestivum L. · Bread wheat
KWS Momont, F
Zea mays L. · Maize
Rainer Leipert
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG, CH
Linum usitatissimum L. · Common flax
University of Manitoba (CA)
Helianthus annuus L. · Sunflower
Syngenta Participations AG c/o Syngenta International AG
Helianthus annuus L. · Sunflower
MAS SEEDS
Triticum aestivum L. · Bread wheat
KWS Momont, F