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.
Cichorium intybus L. (Leaf Chicory Group) · Chicory
Domaine Public (FR)
Cucumis sativus L. · Cucumber
Ersyn Hiunes
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Danko Hodowla Roslin Sp.z.o.o.
Zea mays L. · Maize
Dr. D. Klein / Prof. Dr. A. E. Melchinger
Brassica rapa L. subsp. pekinensis (Lour.) Hanelt · Napa cabbage
Hari Besels
Solanum lycopersicum L. · Tomato
The Regents of the University of California (US)
Zea mays L. subsp. mays (Maize Group) · Maize
TRANSUNITED (FR)
Solanum lycopersicum L. · Tomato
Naomi Gavish
Solanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Robert Priieur
Cucumis melo L. · Melon
SEMINIS VEGETABLE SEED IB
Solanum lycopersicum L. · Tomato
Dr. Mario Martinelli
Helianthus annuus L. · Sunflower
Kovalov Volodymyr Hryhorovych, Zaitsev Oleksii Borysovych,
Cichorium intybus L. · Chicory
T&T VEGETABLE SEEDS S.R.L.
Brassica rapa L. subsp. campestris (L.) A. R. Clapham · Field mustard
Andersson, Gösta
Cucurbita moschata Duchesne · Butternut squash
Domaine Public (FR)
Citrus maxima x Citrus reticulata · Tangelo
Frederick G. Gmitter Jr
Lonicera nitida Wils. · Boxleaf honeysuckle
Oliver Schurmann
Spinacia oleracea L. · Spinach
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Tulipa L. · Tulip
Vriend Cultures B.V.
Trifolium repens L. · White clover
L. DÆHNFELDT A/S
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Livestock and Seed Division (US)
Brassica napus var. napus · Rapeseed
Tovarystvo z obmezhenoiu vidpovidalnistiu «TK ART-AHRO»
Vicia faba L. · Broad bean
SEMILLAS BATLLE