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.
Festuca rubra L. · Red fescue
Top Green (FR)
Festuca rubra L. · Red fescue
LIMAGRAIN GENETICS
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
ZKI, H
Helianthus annuus L. · Sunflower
MIRASOL SEED SLU
Triticum aestivum L. · Bread wheat
Danko Hodowla Roslin Sp.z.o.o.
Triticum aestivum L. · Bread wheat
Cseuz Laszlo / Kertesz Zoltan / Matuz Janos / Barabas Zoltan / Mesterhazy Akos / Beke Bela / Falusi Janos / Oltvanyi Sandorne
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Glycine max (L.) Merr. · Soybean
E.R.S.A. Friuli-Venezia Giulia
Poa pratensis L. · Kentucky bluegrass
Helianthus annuus L. · Sunflower
PACUREANU JOITA MARIASTANCIU DANILSTANCIU MARIA
Helianthus annuus L. · Sunflower
Poljoprivredni Institut Osijek, HR
Beta vulgaris Sugar Beet Group · Sugar beet
SESVANDERHAVE N.V./S.A.
Poa pratensis L. · Kentucky bluegrass
TOP GREEN SAS
Capsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
Capsicum annuum L. · Bell pepper
SYNGENTA SEEDS B.V.
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Keith Hardy
Pisum sativum L. · Pea
Institut national de recherche pour l'agriculture, l'aliment (FR)/Agri Obtentions SA (FR)
Solanum tuberosum L. · Potato
Heinrich Böhm
Helianthus annuus L. · Sunflower
HIBRISOL S.L.
Brassica napus var. napus · Rapeseed
Thomas Foubert
Lactuca sativa L. · Lettuce
VILMORIN, S.A.
Triticum aestivum L. · Bread wheat
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Cucumis sativus L. · Cucumber
NUNZA BV, NL