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.

P1541

Active

Zea mays L. · Maize

PIONEER OVERSEAS CORPORATION

3 records

Noja DS

Active

Hordeum vulgare L. · Barley

Lietuvos agrarinių ir miškų mokslų centro filialas Žemdirbystės institutas

4 records

P1441

Active

Zea mays L. · Maize

PIONEER OVERSEAS CORPORATION

5 records

P0283

Active

Zea mays L. · Maize

PIONEER OVERSEAS CORPORATION

5 records

OAC Madoc

Active

Glycine max (L.) Merr. · Soybean

Istvan Rajcan

4 records

OAC Brooke

Active

Glycine max (L.) Merr. · Soybean

Istvan Raikan

4 records

Nikoklia

Active

Arachis hypogaea L. · Peanut

Agricultural Research Institute

4 records

Nemadex Alain Bouquet

Active

Vitis L. · Grapevine

Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)

3 records

Nixon

Active

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

Bejo Zaden B.V.

4 records

Nesluchovskyi

Active

Ribes uva-crispa L. · Gooseberry

V. Kopan c/o Institute of Horticulture Research Centre

3 records

Ninti

Active

Triticum aestivum L. · Bread wheat

Agro Bio Seed Ltd, BG

3 records

Nemesis

Terminated

Triticum durum Desf. · Durum wheat

Eurodur S.A.

5 records

Negus

Active

Triticum durum Desf. · Durum wheat

CGS SEMENTI S.P.A.

4 records

Negratin

Active

Solanum melongena L. · Eggplant

Yuksel Tohum, TR

3 records

OAC Strive

Active

Glycine max (L.) Merr. · Soybean

UNIVERSITY OF GUELPH

4 records

OAC Hastings

Active

Glycine max (L.) Merr. · Soybean

UNIVERSITY OF GUELPH

4 records

Nagradowicki

Active

Hordeum vulgare L. · Barley

Poznanska Hodowla Roslin Sp. z o.o

4 records

Nevanas

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

5 records

Neurita

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

6 records

Nexus Gt

Active

Lolium perenne L. · Perennial ryegrass

MCCARTHY RESEARCH FARM

4 records

Neilina

Active

Cucumis sativus L. · Cucumber

Paul Degreef

5 records

Nautilus

Active

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

ZKI, H

3 records

Multima

Active

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

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

4 records

Novira

Active

Hordeum vulgare L. · Barley

Claus Einfeldt

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.