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.
Brassica napus var. napus · Rapeseed
Sandrine LEGROS
Deschampsia cespitosa (L.) P. Beauv. · Tufted hairgrass
SVABOVA| Vera Svabova c/o Oseva, Vsup Troubsko Slechtitelska stanice Vetrov / NASINEC IVO| Ing. Ivo Nasinec c/o Oseva, Vsup Troubsko Zuchtstation Vetrov / NASINCOVA| Zuzana Nasincova c/o Slechtitelska stanice Vetrov
Brassica napus var. napus · Rapeseed
Dirk Decherf
Triticum aestivum L. · Bread wheat
Magyarosi, Tomas/Löhde, Jörgen
Beta vulgaris Sugar Beet Group · Sugar beet
WIELKOPOLSKA HODOWLA BURAKA CUKROWEGO SP.Z.O.O
Beta vulgaris Sugar Beet Group · Sugar beet
Betaseed
Zea mays L. · Maize
Manos Remountakis
Triticum aestivum L. · Bread wheat
Nordsaat Saatzucht GmbH Saatzucht Langenstein
Zea mays L. subsp. mays (Maize Group) · Maize
RAGT SA (FR)
Zea mays L. · Maize
PAU SEMENCES
Solanum lycopersicum L. · Tomato
ZERAIM GEDERA
Beta vulgaris Sugar Beet Group · Sugar beet
KWS| KWS SAAT AG
Allium cepa L. · Onion
Her Bimsdeboer
Cucumis sativus L. · Cucumber
Seminis Vegetable Seeds
Zea mays L. · Maize
Pierre CAROLO
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Zea mays L. · Maize
EURALIS SAATEN
Brassica napus L. · Rapeseed
Euralis Semences FR
Brassica napus var. napus · Rapeseed
Nelly Guguin, Jean-Pierre Despigel,
Beta vulgaris Fodder Beet Group · Mangelwurzel
KWS SAAT SE & CO.KGAA
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
ASGROW VEGETABLE SEEDS
Solanum lycopersicum L. · Tomato
Vilmorin SA (FR)
Beta vulgaris Sugar Beet Group · Sugar beet
Betaseed GmbH (DE)
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Rijk Zwaan Zaadteelt en Zaadhandel B.V.