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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.

Sveva

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

NL
6 records

Succara KWS

Active

Beta vulgaris Sugar Beet Group · Sugar beet

DE
2 records

Red Magic

Active

Allium cepa L. var. cepa · Onion

NL
2 records

ST Yellowstone

Active

Beta vulgaris Sugar Beet Group · Sugar beet

DE
2 records

Semiancha

Active

Vicia faba L. var. minuta (hort. ex Alef.) Mansf. · Tick Bean

ES
2 records

Reddington

Active

Capsicum annuum L. · Bell pepper

HU
2 records

Radoux

Active

Malus domestica (Suckow) Borkh. · Apple

NL
3 records

Spantos

Terminated

Spinacia oleracea L. · Spinach

NL
2 records

Sonarosa

Active

Solanum lycopersicum L. · Tomato

HU
2 records

Samish

Active

Spinacia oleracea L. · Spinach

NL
2 records

Sofra

Active

Sorghum bicolor (L.) Moench · Sorghum

IT
2 records

Smyrna

Active

Zea mays L. · Maize

SK
2 records

Romar

Terminated

Raphanus sativus L. var. sativus · Radish

NL
2 records

Robben

Active

Allium fistulosum L. · Welsh onion

HU
2 records

Primagold

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

CZ
2 records

Sherman

Active

Allium cepa L. var. cepa · Onion

NL
2 records

Simona

Active

Prunus domestica L. · European plum

CZ
8 records

Potentat II

Active

Solanum lycopersicum L. · Tomato

SE
3 records

Scapino

Active

Allium cepa L. var. cepa · Onion

NL
2 records

Sardinia

Terminated

Spinacia oleracea L. · Spinach

NL
2 records

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