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.

DICZ0003

Terminated

Dianthus plumarius L. · Garden pink

Syngenta Crop Protection AG

1 record

Elyse

Withdrawn

Kalanchoe Adans. · Kalanchoe

Knud Jepsen A/S

1 record

El Jaro 281

Active

Eucalyptus globulus Labill. · Tasmanian blue gum

Administración Concursal Sniace S.A.

1 record

Catu 191

Application submitted

Catharanthus roseus (L.) G. Don · Madagascar periwinkle

Kenichi Suzuki^^^Koichi Tomomatsu^^^Thunya Taychasinpitak

1 record

Civac 19

Active

Hybrids between Citrus x aurantium L. x Citrus trifoliata L.

Jesús Asensi Benlloch^^^Juan Bautista Forner Valero^^^María Ángeles Forner Giner

1 record

Chubby

Application submitted

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

1 record

ERFZ0002

Terminated

Erysimum linifolium (Pers.) J. Gay · Wallflower

Syngenta Crop Protection AG

1 record

CAMERONQ2

Terminated

Kalanchoe Adans. · Kalanchoe

Knud Jepsen

1 record

Cyclade

Application submitted

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

1 record

Cookie

Application submitted

Prunus persica (L.) Batsch · Peach

PSB Producción Vegetal S.L

1 record

Coliris

Active

Vitis vinifera L. · Common grape vine

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

1 record

DLFETRW1

Active

Chrysanthemum L. · Chrysanthemum

Arie Gerard Post

1 record

DLFEMPR11

Active

Chrysanthemum L. · Chrysanthemum

Arie Gerard Post

1 record

Colombine

Withdrawn

Ligustrum japonicum Thunb. · Japanese privet

André Briant Jeunes Plants S.A.S.

2 records

Bouquet 3160

Application submitted

hybrids between Vitis rotundifolia Michx. and Vitis vinifera L.

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

1 record

Denali

Active

Humulus lupulus L. · Common hop

Roger D Jeske

1 record

Charm

Terminated

Petunia Juss. · Petunia

Adrianus W. M. Van der Meer

1 record

Dasbri

Terminated

Symphyotrichum novi-belgii (L.) G. L. Nesom · New York aster

Bent Juhl Jensen

1 record

C_32

Active

Citrus L. · Citrus

2 records

Dala Triwhi

Terminated

Diascia Link & Otto · Twinspur

Goldsmith Seeds Europe B.V.

1 record

Ben Lair

Terminated

Ribes nigrum L. · Blackcurrant

SCOTTISH CROP RESEARCH INSTITUTE

2 records

Bouquet 3179

Application submitted

hybrids between Vitis rotundifolia Michx. and Vitis vinifera L.

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

1 record

Burgundy

Withdrawn

Hybrids between Cordyline banksii and Cordyline pumilio

MALCOLM WOOLMORE

1 record

CPB_4475

Active

Citrus L. · Citrus

2 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.