Baronesse
ActiveHordeum vulgare L. · Barley
WestBred LLC
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
WestBred LLC
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ZWAAN & DE WILJES
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UNIVERSITY OF CALIFORNIA WOLFSKILL EXPERIMENTAL ORCHARD
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SEMINIS VEGETABLE| Seminis Vegetable Seeds Deutschland GmbH
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Zima Jan, Louda Otto, Tupy Jaroslav,
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The Regents of the University of California
Solanum tuberosum L. · Potato
Meijer C. BV (NL)
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
UNIVERSITY OF CALIFORNIA WOLFSKILL EXPERIMENTAL ORCHARD
Glycine max (L.) Merr. · Soybean
P. Jeanson
Festuca rubra L. · Red fescue
PRODANA| Prodana Seeds A/S
Helianthus annuus L. · Sunflower
Pioneer Overseas Corporation US (USA)
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SEMINIS VEGETABLE SEEDS, NL
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VEGETABLE MONSANTO B.V.
Helianthus annuus L. · Sunflower
SYNGENTA SEEDS AG, CH
Poa pratensis L. · Kentucky bluegrass
Edhar Venken
x Festulolium Aschers. et Graebn. · Festulolium
SS Hladkè Zivotico S.R.O.
Glycine max (L.) Merr. · Soybean
Patrice Jeanson
Solanum tuberosum L. · Potato
Jack Dunnett