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.
Zea mays L. · Maize
PIONEER OVERSEAS CORPORATION
Zea mays L. subsp. mays (Maize Group) · Maize
Pioneer Hi-bred International Inc. (USA)
Raphanus sativus L. var. sativus · Radish
Hazera Seeds B.V.
Zea mays L. subsp. mays (Maize Group) · Maize
Pioneer Hi-Bred Int., INC. (USA)
Solanum lycopersicum L. · Tomato
JAN J.DE BRUIN
Beta vulgaris Sugar Beet Group · Sugar beet
SESVanderhave NV
Cucumis melo L. · Melon
Sakata Seed Corporation, JP
Lolium perenne L. · Perennial ryegrass
VIRGINIA LEHMAN/LOFT'S
Zea mays L. subsp. mays (Maize Group) · Maize
Pioneer Hi-Bred International, Inc Pioneer Overseas Corporation
Zea mays L. subsp. mays (Maize Group) · Maize
Pioneer Hi-Bred International Inc (US)/Pioneer Overseas Corporation (US)
Brassica rapa L. var. rapa (L.) Thell. · Turnip
Asocijacija ,,Sortsemovošč"
Zea mays L. subsp. mays (Maize Group) · Maize
PIONEER OVERSEAS CORPORATION
Brassica napus L. · Rapeseed
PIONEER OVERSEAS CORPORATION
Solanum lycopersicum L. · Tomato
Zeraim Gedera Ltd. Seed Company
Zea mays L. subsp. mays (Maize Group) · Maize
Pioneer Hi-bred International Inc. (USA)
Zea mays L. subsp. mays (Maize Group) · Maize
Limagrain Europe s.a.
Brassica napus var. napus · Rapeseed
Monsanto Agriculture France SAS (FR)
Zea mays L. subsp. mays (Maize Group) · Maize
PIONEER OVERSEAS CORPORATION
Cichorium endivia L. · Endive
Olter S.R.L. (IT)
Zea mays L. subsp. mays (Maize Group) · Maize
PIONEER OVERSEAS CORPORATION
Phleum pratense L. · Timothy grass
Vilmorin SA (FR)
Zea mays L. subsp. mays (Maize Group) · Maize
PIONEER OVERSEAS CORPORATION US
Solanum lycopersicum L. · Tomato
Vilmorin SA (FR)
Solanum lycopersicum L. · Tomato
Paul Degreef