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.

Amaez

Active

Solanum tuberosum L. · Potato

Kweek- en Researchbedrijf Agrico B.V.

5 records

AGN M68

Active

Medicago sativa L. · Alfalfa

ZOULIAMIS PAVLOS

3 records

Albarus

Active

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

Syngenta Seeds B.V.

3 records

Anilis

Active

Triticum aestivum L. · Bread wheat

Biogranum d.o.o. (RS)

3 records

Almirante

Active

Triticum aestivum L. · Bread wheat

INST.FOR SMALL GRAINS

5 records

Alirón

Active

Triticum durum Desf. · Durum wheat

Eurodur S.A.

4 records

Alfarras

Active

Triticum aestivum L. · Bread wheat

SEMILLAS BATLLE S.A.

4 records

Agilar

Active

Pisum sativum L. · Pea

ZKI, H

3 records

Alfamed

Active

Medicago sativa L. · Alfalfa

SEMILLAS BATLLE, S.A.

3 records

Amilcar

Active

Triticum durum Desf. · Durum wheat

Monsanto Agricultura España S.L.U.

5 records

Alcazaba

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

6 records

Álvaro

Active

Cucumis melo L. · Melon

SEMILLAS FITO, S.A.

4 records

Almansor

Active

Triticum aestivum L. · Bread wheat

INIAV - Instituto Nacional de Investigacao Agraria e Veterinaria.

3 records

Achim

Active

Vicia pannonica Crantz · Hungarian vetch

Toth Sandorne Dr. Hubai Erzsebet / Dr. Toth Erzsebet Agnes / Breznyik Katalin / Varga Zsolt

4 records

3X97

Active

Citrus x limon (L.) Osbeck · Lemon

Craig Robert Pressler

5 records

Agata

Active

Solanum melongena L. · Eggplant

Consorzio Sativa Societa Cooperativa Agricola

3 records

Afrodita

Active

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

Agrisel, SK

3 records

9758 R

Active

Helianthus annuus L. · Sunflower

Tahir Gucer, Ibrahim Yilmaz, Veli Pekcan, Yalcin Kaya, Goksel Evci,

4 records

Aggression

Active

Lolium perenne L. · Perennial ryegrass

Barenbrug USA

4 records

AGA 1301

Active

Helianthus annuus L. · Sunflower

Agromar Marmara Tarim Ürünleri SAN.TIC.A.S (TR)

3 records

Abrinas

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

6 records

Aferdita

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

5 records

Agros

Terminated

Lactuca sativa L. · Lettuce

Nunhems B.V.

6 records

Zouk 37

Active

Malus domestica (Suckow) Borkh. · Apple

ZOUK bvba, BE3800 Sint-Truiden

4 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.