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Variety traits

Tolerance

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.

Sources10

Breakdown by crop

Maize tolerance 721 Sunflower tolerance 633 Maize tolerance 361 Tolerance — Sugar Beet 354 Tolerance — soft wheat 336 Tolerance in Lettuce 236 Tomato Tolerance 234 Cucumber tolerance 204 Rapeseed tolerance 168 Tolerance in White Cabbage 140 Pepper Tolerance 122 Barley tolerance 119 Tolerance — Soybean 117 Bean tolerance 81 Rapeseed tolerance 74 Potato tolerance 71 Rose tolerance 64 Zucchini Tolerance 61 Melon tolerance 61 Plum tolerance 58 Grapevine Tolerance 56 Peach tolerance 55 Pea tolerance 55 Triticale Tolerance 54

Found in these crops

Maize 718 Sunflower 670 Sugar beet 368 Bread wheat 342 Tomato 336 Maize 322 Cucumber 309 Lettuce 301 Rapeseed 190 Bell pepper 189 White cabbage 180 Perennial ryegrass 139

Varieties that feature this in their description

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.

Mahmoudi

Active

Triticum durum Desf. · Durum wheat

IT
1 record

Kassa

Application submitted

Rosa L. · Rose

HU
1 record

Hermes F1

Application submitted

Cucumis sativus L. · Cucumber

UA
1 record

Lucius

Active

Beta vulgaris L. · Beet

SK
1 record

Kandia

Terminated

Lactuca sativa L. · Lettuce

NL
1 record

H1370

Terminated

Solanum lycopersicum L. · Tomato

IT
1 record

Lord F1

Protection expired

Brassica oleracea L. (Broccoli Group) · Broccoli

Asgrow (IT)

SI
1 record

Hektor F1

Active

Cucumis sativus L. · Cucumber

UA
1 record

Jonalord

Active

Malus Mill. · Apple

SK
2 records

John Wayne

Active

Hydrangea quercifolia W. Bartram · Oakleaf hydrangea

No information of breeder available for this variety

FR
1 record

Geri

Application submitted

Cucumis sativus L. · Cucumber

HU
1 record

Koket FRC

Terminated

Festuca rubra L. · Red fescue

FI
1 record

Goldiana

Active

Solanum lycopersicum L. · Tomato

DE
1 record

Krokodyl

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

UA
1 record

INV 1115

Withdrawn

Brassica napus var. napus · Rapeseed

DE
1 record

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