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.

Coronado

Protection expired

Brassica oleracea L. (Broccoli Group) · Broccoli

Bejo Zaden B.V. (NL)

BG CZ HU NL PL SK

7 records

Campesino

Active

Triticum aestivum L. · Bread wheat

Secobra Saatzucht

BE FR LU NL

15 records

DK Excited

Active

Brassica napus var. napus · Rapeseed

Monsanto Technology, USA

CZ DE DK PL

9 records

Columbus

Active

Allium porrum L. · Leek

Ger Bimsdeboer

HR LT NL PL SI UA

7 records

Coletta KWS

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

BE DE DK FR LT SE

8 records

Arsenal

Active

Brassica napus L. · Rapeseed

LIMAGRAIN EUROPE

AT BG HU LT RO SK

8 records

Express

Terminated

Brassica napus L. · Rapeseed

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG

AT EE IT LV NL SE

8 records

Zarco

Active

Capsicum annuum L. · Bell pepper

Syngenta Seeds B.V.

CZ ES NL PL SK

7 records

Celesta

Protection expired

Brassica oleracea L. (Cauliflower Group) · Cauliflower

ZWAAN'S| Rijk Zwaan Zaadteelt en Zaadhandel B.V. (Dep. Variety registration & protection)

CZ DE HU NL PL SK

8 records

Smart Attala KWS

Active

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE and CO KGAA

DE DK LT SE UA

8 records

Saxa

Active

Phaseolus vulgaris L. · Common bean

Service Officiel de Controle (FR)

BG FR IT SI UA

8 records

Samoa

Active

Poa pratensis L. · Kentucky bluegrass

Zelder BV (NL)

DE EE FR NL PL

12 records

Sanbro

Active

Helianthus annuus L. · Sunflower

Syngenta Seeds S.A.

AT DE ES FR IT

13 records

Aurelia

Active

Brassica napus L. · Rapeseed

Reinhard Hemker

AT HU LT RO SK UA

9 records

RGT Kilimanjaro

Active

Triticum aestivum L. · Bread wheat

RAGT 2N S.A.S

FI FR LT PL

11 records

Sandra KWS

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE and CO KGAA

DE DK FR NL SE

7 records

Star

Active

Brassica napus var. napus · Rapeseed

DLF-TRIFOLIUM A/S

CZ DE DK IE PL

13 records

Parano

Terminated

Daucus carota L. · Carrot

Nunhems BV (NL)

CZ HR NL PL SK

8 records

PR39B76

Active

Zea mays L. · Maize

PIONEER OVERSEAS CORPORATION

AT IT RO SI UA

10 records

Michelangelo

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Strube, D

HU IT PL UA

8 records

Smart Edytka KWS

Active

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE&Co.KGaA, D

DE HR HU PL

7 records

Liroyal

Protection expired

Festuca rubra L. · Red fescue

Euro Grass Breeding GmbH Co. KG

CZ DE DK FR PL

11 records

Orcade

Active

Hordeum vulgare L. · Barley

Nordic Seeds A/S

CZ DE DK FR IE

10 records

Rajka

Active

Malus domestica (Suckow) Borkh. · Apple

Ústav experimentální botaniky AV ČR, v.v.i. (CZ)

CZ HU NL PL SK

19 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.