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.

Ice Desert

Active

Lactuca sativa L. · Lettuce

Syngenta Seeds B.V.

7 records

NS 540

Active

Zea mays L. · Maize

Institut za ratarstvo i povrtarstvo, Novi Sad

7 records

Gi 148/2

Active

Prunus L. · Plum

Gruppe, Werner|Linden/Grossen/Linden, Federal Republic of Germany / Schmidt, Hanna|Ahrensburg, Federal Republic of Germany

3 records

I 30

Active

Olea europaea L. · Olive

UNIVERSIDAD DE CORDOBA-TODOLIVO, S.L.

11 records

Ecco875 MA

Active

Oryza sativa L. · Rice

RICE TEC INC.

4 records

Heinz 9553

Active

Solanum lycopersicum L. · Tomato

HEINZSEED

4 records

GSS 3951

Active

Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn

Syngenta Seeds B.V.

3 records

KM Agro

Active

Medicago sativa L. · Alfalfa

Nagy Bela / Ficsor Jozsef / Bech Lajosne

4 records

K 326

Active

Nicotiana tabacum L. · Tobacco

NOVARTIS SEEDS

3 records

Big Horn GT

Active

Festuca ovina L. · Sheep's fescue

PURE SEED TESTING

5 records

Go Bal 10

Active

Trifolium michelianum Savi · Balansa clover

Jerry Lee Hall

4 records

DP 5415 RR

Protection expired

Gossypium hirsutum L. · Upland cotton

William V. Hugie.

3 records

DKC 3088

Active

Zea mays L. · Maize

MONSANTO TECHNOLOGY

3 records

72 May 80

Active

Zea mays L. · Maize

MAYAGROSEED CORP.

5 records

BT-VL-17

Active

Helianthus annuus L. · Sunflower

SINISA JOCIC / SANDRA CVEJIC / JOCKOVIC MILAN

6 records

UCB1-D110

Active

Pistacia atlantica x Pistacia integerrima

Sharma Dharam / Castillon Javier / Ash Kendall

3 records

TAN 04179

Active

Rosa L. · Rose

CHRISTIAN EVERS

3 records

G.890

Active

Malus domestica x Malus robusta · Apple

Terence Robinson, James Cummins, Herbert Sanders A.

4 records

CG 202

Active

Malus Mill. · Apple

James Cummins, Herbert Aldwinckle, Gennaro Fazio & Terence Robinson, Cornell University

3 records

10.00.99

Active

Campanula x haylodgensis hort

Jensen Gert K.|Odense N, DK

3 records

DK 315 Waxy

Active

Zea mays L. · Maize

MONSANTO TECHNOLOGY

AT UA

5 records

MAS 96G

Active

Helianthus annuus L. · Sunflower

MAS Seeds,FR

BG UA

3 records

MAS 35K

Active

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

MAS Seeds,FR

FR HR

4 records

SUM 405

Active

Zea mays L. · Maize

Mario Lo Pinto

IT UA

5 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.