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.

Ténor

Active

Triticum aestivum L. · Bread wheat

Unisigma GIE Recherche et Selection (FR)

FR HR IT PT UA

19 records

Opera PR

Active

Helianthus annuus L. · Sunflower

SYNGENTA SEEDS AG, CH

BG HR HU IT UA

11 records

Olga

Active

Solanum lycopersicum L. · Tomato

Vilmorin, F

CZ HR NL PL UA

10 records

Pr64g46

Active

Helianthus annuus L. · Sunflower

Shatsman Dmytro Oleksandrovych

BG ES HR HU UA

13 records

LG Aneri

Active

Triticum aestivum L. · Bread wheat

Limagrain Europe, FR

HU RO SK UA

13 records

LG Aviron

Active

Brassica napus var. napus · Rapeseed

Limagrain Europe, F

CZ DE DK FR PL

14 records

Lg Auriga

Active

Triticum aestivum L. · Bread wheat

Limagrain Europe, F

BG FR HU IT RO

14 records

Levina

Active

Cucumis sativus L. · Cucumber

Royal Sluis (NL)

BG HU NL SI UA

9 records

Barlexas II

Active

Festuca arundinacea Schreb. · Tall fescue

Barenbrug Holland BV (NL)

CZ FR HR IT RO

11 records

ES Bayano

Active

Helianthus annuus L. · Sunflower

Euralis Semences, Soltis

BG HR IT RO UA

14 records

Arrivist

Active

Brassica oleracea L. (White Cabbage Group) · White cabbage

SVS HOLLAND BV , NL

CZ HR NL PL SK

10 records

Apache

Active

Triticum aestivum L. · Bread wheat

Nickerson SA (FR)

BG FR HR RO

15 records

Cindy

Active

Festuca rubra L. · Red fescue

Innoseeds BV, NL-4420 AA Kapelle

CZ DE FR NL SE

14 records

Amour

Active

Cucumis sativus L. · Cucumber

Bejo Zaden, NL

BG CZ NL PL SK

12 records

Abba

Active

Hordeum vulgare L. · Barley

Saaten-Union

DE FI FR HU UA

15 records

Wagner 1

Active

Festuca rubra L. · Red fescue

Francois van der Hee

DE DK FI UA

14 records

SY Experto

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection,CH

IT RO SK UA

11 records

Pasamonte

Active

Cucumis sativus L. · Cucumber

Syngenta Seeds B.V.

BG LT NL PL

9 records

Integral

Active

Hordeum vulgare L. · Barley

Secobra Recherches, Maule FR

DE FR HU IE

17 records

Dakisha

Active

Poa pratensis L. · Kentucky bluegrass

DLF Trifolium A-S, DK

CZ DE DK FR

13 records

ES Veronika

Active

Helianthus annuus L. · Sunflower

Euralis Semences, F

BG FR IT UA

12 records

Deltastar

Active

Cucumis sativus L. · Cucumber

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

CZ NL PL SK

9 records

Astronom

Active

Brassica napus var. napus · Rapeseed

Reinhard Hemker

CZ DE FR UA

12 records

Anniston

Active

Brassica napus var. napus · Rapeseed

Reinhard Hemker

CZ FR PL UA

13 records

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Variety traits

Maturity group 89 063
Yield 67 000
Vigor 53 548
Plant height 51 504
Lodging 50 198
Taste and aroma 36 010
Variety origin 29 523
Productivity 27 845

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.