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
DLF Beet Seed APS
Helianthus annuus L. · Sunflower
JOSE RAMON PEREZ MONREAL
Cucumis sativus L. · Cucumber
Zoldsegtermesztesi Kutato Intezet, H
Beta vulgaris Sugar Beet Group · Sugar beet
Betaseed
Festuca arundinacea Schreb. · Tall fescue
Loft's Seed Inc. (US)
x Triticosecale Wittm. ex A. Camus · Triticale
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Triticum aestivum L. · Bread wheat
SECOBRA RECHERCHES S.A.S
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
United Genetics Seeds, USA
Cucumis sativus L. · Cucumber
RIJK ZWAAN Zaadteelt en Zaadhandel B.V.
Cucumis sativus L. · Cucumber
Bejo Zaden BV (NL)
Daucus carota L. · Carrot
MORAVOSEED
Festuca trachyphylla (Hack.) Hack. · Hard fescue
Peak Plant Genetics, LLC & Rutgers, The State University of New Jersey
Lolium perenne L. · Perennial ryegrass
Barenbrug Holland B.V. (Variety Administration)
Festuca rubra L. · Red fescue
Theodorus P.M. op den Kamp
Medicago sativa L. · Alfalfa
Barenbrug Holland BV (NL)
Capsicum annuum L. · Bell pepper
ENZA ZADEN BEHEER B.V.
Cucurbita pepo L. · Field pumpkin
Paul Degreef
Brassica oleracea L. (White Cabbage Group) · White cabbage
Jonh Pieter Schipper
Helianthus annuus L. · Sunflower
Jean Pierre Dufourcq
Hordeum vulgare L. · Barley
LEMAIRE DEFFONTAINES S.A.S.
Glycine max (L.) Merr. · Soybean
Saatzucht Donau GesmbH & Co KG (AT)
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Hordeum vulgare L. · Barley
Poljoprivredni Institut Osijek, HR
Allium cepa L. var. aggregatum G. Don · Shallot
BEJO ZADEN