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.
Helianthus annuus L. · Sunflower
Fermerske hospodarstvo "Novoiehorivka-Ahro"
Solanum melongena L. · Eggplant
Les Graines Caillard Sa (FR)
Rosa L. · Rose
Mark Gergely
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Moshe Zalsman
Helianthus annuus L. · Sunflower
Joel Meunier
Helianthus annuus L. · Sunflower
Surovikin Volodymyr Mykolaiovych, Sliusar Emiliia L`vivna, Obydalo Dmytro Ivanovych, Borodin Serhii Heorhiiovych, Pustovoit Halyna Vasylivna, Ilatovs`kyi Volodymyr Platonovych,
Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn
Sergio Nieto
Solanum lycopersicum L. · Tomato
Sylvain Bontems
Vitis L. · Grapevine
Georg WEISS (AT)/Gertrude MAYER (AT)
Helianthus annuus L. · Sunflower
Pryvatne Pidpryiemstvo "NASINNEVE"
Petroselinum crispum (Mill.) Nym. ex A.W. Hill ssp. crispum · Parsley
Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa w Ozarowie Mazowieckim Spolka z o.o.
Rosa L. · Rose
ONORATO PIERANGELO
Helianthus annuus L. · Sunflower
Didier Sauvaire
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Anzhelika Rakov
Zea mays L. · Maize
MONSANTO TECHNOLOGY
Cucurbita pepo L. · Field pumpkin
Wim Snijders
Raphanus sativus L. var. sativus · Radish
Orlov Stanislav Dmytrovych, Muzhylko Viktor Valentynovych,
Zea mays L. · Maize
MONSANTO TECHNOLOGY
Malus pumila L. Mill. · Paradise apple
EAST MALLING RESEARCH ST. (GB)
Zea mays L. · Maize
MONSANTO TECHNOLOGY
Prunus tomentosa Thunb. · Nanking cherry
Volodymyr Mezhenskyj
Helianthus annuus L. · Sunflower
Euralis Semences FR
Glycine max (L.) Merr. · Soybean
Patrice Jeanson
Petroselinum crispum (Mill.) Nym. ex A.W. Hill var. tuberosum (Bernh.) Mart Crov. · Hamburg parsley
Bejo Zaden B.V.