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.
Oryza sativa L. · Rice
Sardo Piemontese Sementi Soc. Coop. Società Agricola
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Beta vulgaris Sugar Beet Group · Sugar beet
SAS FLORIMOND-DESPREZ Veuve et Fils
Solanum tuberosum L. · Potato
Stet Holland B.V./WUR Depart. Plantwetenschap Leerstoel Plantenveredeling
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Nunhems, NL
Taxus x media Rehder · Anglo-Japanese yew
Grzegorz Kurowski^^^Lucjan Kurowski
Triticum durum Desf. · Durum wheat
Beta vulgaris Sugar Beet Group · Sugar beet
SYNGENTA SEEDS, A.B.
Hordeum vulgare L. · Barley
Boreal Plant Breeding
Cucurbita pepo L. · Field pumpkin
ISP QUEDLINBURG GERMANY
Pyrus L. · Pear
FISCHER MANFRED| Prof. Dr. Manfred Fischer / MILDENBERGER| Gisela Mildenberger
Cucumis sativus L. · Cucumber
SEMO a.s
Phaseolus vulgaris L. · Common bean
HM.CLAUSE
Lolium perenne L. · Perennial ryegrass
Criadero El Cencerro S.A.
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Triticum durum Desf. · Durum wheat
CREA-CENTRO DI RICERCA INGEGNERIA E TRASFORMAZIONI AGROALIMENTARI (CREA-IT-RM)
Lupinus albus L. · White lupin
VON BAER, ERIK
Lactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
Brassica oleracea L. (White Cabbage Group) · White cabbage
SYNGENTA SEEDS B.V.
Solanum lycopersicum L. · Tomato
BEJO ZADEN B.V.
Secale cereale L. · Rye
Herbert Tuppits 95%, Leida Kask 5%
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
ESASEM, I