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 arundinacea Schreb. · Tall fescue
M. Francois Charpentier c/o REGA
Cucumis melo L. · Melon
Paul Degreef
Capsicum annuum L. · Bell pepper
Syngenta Seeds, NL
Lupinus albus L. · White lupin
LANDWIRTSCHAFTLICHE LEHRANSTALT TRIESDORF
Rubus idaeus L. · Red raspberry
Telch Aldo
Lolium perenne L. · Perennial ryegrass
Barenbrug Holland BV (NL)
Brassica oleracea L. (Broccoli Group) · Broccoli
Bejo Zaden BV (NL)
Poa pratensis L. · Kentucky bluegrass
Rutgers, The State University of New Jersey
Festuca rubra L. · Red fescue
SAATZUCHT| Saatzucht Steinach GmbH & Co KG
Cucumis sativus L. · Cucumber
Ger Beemsterboer
Cucumis sativus L. · Cucumber
Bejo Zaden, NL
Lolium perenne L. · Perennial ryegrass
Innoseeds B.V. (NL)
Cucurbita pepo L. · Field pumpkin
Syngenta Seeds, NL
Glycine max (L.) Merr. · Soybean
Saatzucht Donau GmbH & Co.KG
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
Solanum tuberosum L. · Potato
STET HOLLAND
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
Michalik Andrea|Dresden, DE
Allium cepa L. · Onion
SEMINIS VEGETABLE SEEDS, NL
Lolium perenne L. · Perennial ryegrass
Rutgers, The State University of New Jersey
Spinacia oleracea L. · Spinach
PHILIPS SIMONS
Pisum sativum L. · Pea
Syngenta Seeds B.V.
Lolium multiflorum Lam. · Italian ryegrass
DLF-TRIFOLIUM DANSK PLANTEFORAEDLING
Lactuca sativa L. · Lettuce
Syngenta, NL
Solanum tuberosum L. · Potato
MARC A. SMITH