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 durum Desf. · Durum wheat
UCA SEM.PROVENCE
Cucurbita pepo L. · Field pumpkin
Ralf Kuijpers
Phaseolus vulgaris L. · Common bean
Seminis Vegetable Seeds
Brassica napus var. napus · Rapeseed
KWS SAAT SE&CO.KGaA, DE
Glycine max (L.) Merr. · Soybean
Saatzucht Donau GmbH, Probstdorf AT
Brassica napus var. napus · Rapeseed
KOIPESOL, S.A./SVALOF AB
Triticum aestivum L. subsp. spelta (L.) Thell. · Spelt
CRAW-DPT SCIENCES DU VIVANT - UNITÉ D'AMÉLIORATION
Triticum aestivum L. · Bread wheat
RAGT 2n
Festuca rubra L. · Red fescue
DLF SEEDS A/S
Pisum sativum L. · Pea
Toft Plant Breeding APS
Triticum durum Desf. · Durum wheat
FLORIMOND DESPREZ VEUVE ET FILS
Daucus carota L. · Carrot
Vilmorin SA (FR)
Lolium perenne L. · Perennial ryegrass
Teagasc
Lactuca sativa L. · Lettuce
Syngenta Seeds B.V.
Solanum lycopersicum L. · Tomato
Seminis Vegetable Seeds
Triticum aestivum L. · Bread wheat
Poznanska Hodowla Roslin Sp. z o.o
Festuca rubra L. · Red fescue
DLF Seeds A-S, DK
Lolium perenne L. · Perennial ryegrass
DLF Seeds A/S
Triticum aestivum L. · Bread wheat
NICKERSON SUR, S.A.
Festuca rubra L. · Red fescue
Cascade International Seed Company
Lolium perenne L. · Perennial ryegrass
DLF Seeds A/S
Lolium perenne L. · Perennial ryegrass
Norddeutsche Pflanzenzucht Hans-Georg Lembke KG. Herrn Dr. Martin Frauen / Wilbert Luesink
Lactuca sativa L. · Lettuce
ENZA ZADEN
Hordeum vulgare L. · Barley
ACKERMANN SAATZUCHT GMBH andCO KG