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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.

Achat

Active

Prunus cerasus L. · Sour cherry

DE
4 records

Annero

Active

Malus Mill. · Apple

SE
2 records

Aurora

Terminated

Cucumis sativus L. · Cucumber

NL
3 records

Amfora

Active

Allium cepa L. var. cepa · Onion

CZ
2 records

AMARELA

Active

Castanea sativa Mill. · Sweet chestnut

ES
2 records

Bastos

Active

Cucumis sativus L. · Cucumber

NL
2 records

Amant

Active

Cucumis sativus L. · Cucumber

NL
2 records

Barsan

Active

Capsicum annuum L. · Bell pepper

RO
2 records

Barpitosa

Terminated

Deschampsia cespitosa (L.) P. Beauv. · Tufted hairgrass

NL
2 records

Bedan

Active

Malus domestica (Suckow) Borkh. · Apple

FR
3 records

Barbarica KWS

Active

Beta vulgaris Sugar Beet Group · Sugar beet

DE
2 records

Adige

Active

Capsicum annuum L. · Bell pepper

NL
2 records

Andreea

Active

Prunus domestica L. · European plum

RO
2 records

Abran

Terminated

Cucumis melo L. · Melon

NL
2 records

Valerac

Active

Pyrus communis L. · European pear

3 records

Aurelius

Active

Capsicum annuum L. · Bell pepper

RO
2 records

Aurana

Active

Vitis L. · Grapevine

RO
2 records

Alizar

Terminated

Capsicum annuum L. · Bell pepper

NL
2 records

Alissio

Active

Zea mays L. · Maize

SK
2 records

Aprimira

Active

Prunus domestica L. · European plum

DE
4 records

Szarvasi 4

Terminated

Trifolium repens L. · White clover

2 records

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