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.
Triticum aestivum L. · Bread wheat
S.I.S. SOCIETA' ITALIANA SEMENTI
Gossypium hirsutum L. · Upland cotton
GOLDEN WEST SEED RESEARCH Co.
Capsicum annuum L. · Bell pepper
SVS HOLLAND BV , NL
Lolium perenne L. · Perennial ryegrass
BARENBRUG HOLLAND
Lolium perenne L. · Perennial ryegrass
Barenbrug Holland BV (NL)
Triticum aestivum L. · Bread wheat
RAGT 2N S.A.S
Cucurbita pepo L. · Field pumpkin
Wei OUYANG, US
Poa pratensis L. · Kentucky bluegrass
PURE SEED TESTING
Festuca rubra L. · Red fescue
Deutsche Saatveredelung AG - DSV (DE)
Dactylis glomerata L. · Cocksfoot
BARENBRUG UK LTD
Phaseolus vulgaris L. · Common bean
Michigan State University
hybrids between Pelargonium peltatum and Pelargonium zonale · Ivy-leaved geranium
Mitchell Eugene Hanes
Lactuca sativa L. · Lettuce
Vilmorin, F
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Lolium perenne L. · Perennial ryegrass
DLF Pickseed
Lolium perenne L. · Perennial ryegrass
Z Seeds Inc. (US)
Helianthus annuus L. · Sunflower
SEMILLAS BATLLE S.A.
Linum usitatissimum L. · Common flax
Linéa Semences de Lin G.I.E.
Beta vulgaris Sugar Beet Group · Sugar beet
SAS FLORIMOND-DESPREZ Veuve et Fils
Lactuca sativa L. · Lettuce
Syngenta Seeds B.V.
Lolium perenne L. · Perennial ryegrass
Yes applicant details in question 1, Yes applicant details in question 1
Lactuca sativa L. · Lettuce
Rijk Zwaan Zadteelt en Zaadhandel B.V., Netherlands
Linum usitatissimum L. · Common flax
Linéa Semences de Lin G.I.E.