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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.

Piranto

Terminated

Solanum lycopersicum L. · Tomato

NL
2 records

Salama KWS

Active

Beta vulgaris Sugar Beet Group · Sugar beet

DE
2 records

Savio

Active

Capsicum annuum L. · Bell pepper

IT
2 records

Perla Rosa

Terminated

Solanum lycopersicum L. · Tomato

NL
2 records

Patatarello

Active

Solanum lycopersicum L. · Tomato

HU
2 records

Safírus

Active

Lactuca sativa L. · Lettuce

CZ
2 records

Recorra

Terminated

Allium cepa L. var. cepa · Onion

NL
2 records

Rulander

Active

Solanum lycopersicum L. · Tomato

IT
2 records

Rachel

Protection expired

Solanum tuberosum L. · Potato

HU
2 records

Osat

Active

Petroselinum crispum (Mill.) Nyman ex A. W. Hill · Parsley

CZ
2 records

P8659

Terminated

Zea mays L. subsp. mays (Maize Group) · Maize

CZ
2 records

Rokero

Active

Brassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts

DE
2 records

Roden

Active

Lactuca sativa L. · Lettuce

CZ
2 records

Rhinema

Active

Beta vulgaris Sugar Beet Group · Sugar beet

DE
2 records

Oktella

Terminated

Raphanus sativus L. var. sativus · Radish

NL
2 records

PR58N57

Active

Medicago sativa L. · Alfalfa

IT
3 records

Red Queen

Terminated

Allium cepa L. var. cepa · Onion

NL
2 records

RHA-SEL

Active

Helianthus annuus L. · Sunflower

UA
3 records

Red Devil

Active

Capsicum annuum L. · Bell pepper

UNITED GENETICS SEEDS CO

PT
2 records

Red Comet

Terminated

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

NL
2 records

Remar

Active

Malus domestica (Suckow) Borkh. · Apple

RO
2 records

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