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.
Beta vulgaris Sugar Beet Group · Sugar beet
Maribo Seed International ApS
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE and CO KGAA
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE and CO KGAA
Helianthus annuus L. · Sunflower
KWS SAAT SE, DE
Helianthus annuus L. · Sunflower
KWS SAAT SE, DE
Helianthus annuus L. · Sunflower
Euralis Semences FR
Brassica napus var. napus · Rapeseed
Deutsche Saatveredelung AG - DSV (DE)
Brassica napus L. · Rapeseed
Rustica Prograin Genetique
Triticum aestivum L. · Bread wheat
GRABOVETS ANATOLIJ IVANOVICh / FOMENKO MARINA ANATOL'EVNA / KOLTUNOVA VALENTINA ALEKSEEVNA / LYaShKO ALEKSEJ GEORGIEVICh / ShEVChENKO NINA ALEKSANDROVNA / GRITSENKO VERA VLADIMIROVNA / BIRYuKOV KONSTANTIN NIKOLAEVICh / LYaShKOV IVAN VIKTOROVICh
Hordeum vulgare L. · Barley
SECOBRA RECHERCHES S.A.S
Helianthus annuus L. · Sunflower
Euralis Semences FR
Zea mays L. · Maize
PETER KONCZOL
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE and CO KGAA
Brassica oleracea L. (White Cabbage Group) · White cabbage
BEJO ZADEN B.V, NL
Helianthus annuus L. · Sunflower
Thierry Andre
Beta vulgaris Sugar Beet Group · Sugar beet
Strube-Dieckmann GmbH&Co.KG
Triticum aestivum L. · Bread wheat
Sogroup (FR)
Hordeum vulgare L. · Barley
Graczol Geza / Tomcsanyi Andras / Beke Bela / Remete Attila / Wodring Laszlo
x Triticosecale Wittm. ex A. Camus · Triticale
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Zea mays L. · Maize
Monsanto Technology, USA
Lolium perenne L. · Perennial ryegrass
Barenbrug Holland BV (NL)
Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage
BEJO ZADEN
Lactuca sativa L. · Lettuce
Syngenta Seeds BV (NL)
Avena sativa L. · Oat
NORDSAAT SAATZUCHT