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.

Otilia

Active

Phaseolus vulgaris L. · Common bean

AGROSEL S.R.L.

3 records

Nikomate

Active

Solanum lycopersicum L. · Tomato

HAZERA SEEDS BV

3 records

NS 100/01

Active

Triticum aestivum L. · Bread wheat

Boryslav Kobyl`sky, Srbyslav Denchych,

4 records

Optimum

Protection expired

Cucumis sativus L. · Cucumber

Hybrids Ellas Abee

2 records

Opoka

Active

Beta vulgaris Sugar Beet Group · Sugar beet

SESVANDERHAVE N.V./S.A.

2 records

NS H 7917

Active

Helianthus annuus L. · Sunflower

Dimitrijevic Aleksandra, Radeka Ilija, Dedic Bosko, Jockovic Milan, Cvejic Sandra, Jocic Sinisa,

3 records

NS-H-6044

Active

Helianthus annuus L. · Sunflower

Miclic Vladimir, Marinkovic Radovan, Gvozdenovic Sandra, Jocic Sinisa,

4 records

Omeya

Active

Vicia faba L. var. minuta (hort. ex Alef.) Mansf. · Tick Bean

INIA/IFAPA/CSIC

3 records

Nevrokop 1146

Active

Nicotiana tabacum L. · Tobacco

Spas S. Gelemerov, Katerina G. Zefirova

3 records

Nettarino

Active

Solanum lycopersicum L. · Tomato

FENIX S.R.L.

2 records

NESTA

Terminated

Trifolium repens L. · White clover

PLANT BREEDING INTERNATIONAL CAMBRIDGE

3 records

Opal bg

Active

Solanum lycopersicum L. · Tomato

Zhivko Danailov

3 records

Neon

Active

Berberis thunbergii DC. · Japanese barberry

Dariusz Kapias

2 records

Nauplus

Active

Lactuca sativa L. · Lettuce

BLUMEN GROUP S.P.A

2 records

Nataszka

Active

Cucumis sativus L. · Cucumber

Kees Broersen Zaden

2 records

Ocito

Active

Cucumis melo L. · Melon

Gautier Semences SAS (FR)

2 records

Nemagiant

Active

Solanum lycopersicum L. · Tomato

UNITED GENETICS SEEDS CO

2 records

NK Symba

Protection expired

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

Syngenta Crop Protection AG, Seeds Division, CH

2 records

Napelo

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

4 records

NK Kansas

Active

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

Syngenta Crop Protection AG, Seeds Division, CH

2 records

Numex Sahara

Active

Cynodon dactylon (L.) Pers. · Bermuda grass

DEPARTMENT OF AGRONOMY AND HORTICULTURE

4 records

OAC Bruno

Active

Glycine max (L.) Merr. · Soybean

Istvan Rajkan

3 records

NS H 7370

Active

Helianthus annuus L. · Sunflower

Malidza Goran, Miklic Vladimir, Miladinovic Dragana, Cvejic Sandra, Jocic Sinisa,

3 records

NEGRILLO DE ESTEPA

Active

Olea europaea L. · Olive

3 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.