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.

Dominator

Active

Lolium perenne L. · Perennial ryegrass

PURE SEED TESTING

4 records

Elettra

Active

Oryza sativa L. · Rice

Almo S.p.A.

5 records

EA 5034

Active

Prunus armeniaca L. · Apricot

S.A.R.L. Benoit Escande Editions (FR)

6 records

Durance

Active

Daucus carota L. · Carrot

Nunhems, NL

7 records

Delfo

Active

Oryza sativa L. · Rice

Almo S.p.A.

5 records

DP 428 B

Active

Gossypium hirsutum L. · Upland cotton

MONSANTO TECHNOLOGY

7 records

Crofton

Active

Daucus carota L. · Carrot

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

4 records

Desert Moon

Active

Poa pratensis L. · Kentucky bluegrass

PURE SEED TESTING

5 records

Cutter II

Active

Lolium perenne L. · Perennial ryegrass

PICKSEED

6 records

Concret

Active

Triticum aestivum L. · Bread wheat

Florimond Desprez Veuve et Fils, FR

5 records

Coccinel

Active

Hordeum vulgare L. · Barley

SECOBRA RECHERCHES S.A.S

5 records

Dardo

Active

Oryza sativa L. · Rice

Almo S.p.A.

6 records

Claudine

Active

Cucumis sativus L. · Cucumber

Seminis SVS Holland, NL

4 records

Chinook

Active

Agrostis stolonifera L. · Creeping bentgrass

Peak Plant Genetics, LLC & Rutgers, The State University of New Jersey

4 records

Clery

Active

Fragaria L. · Strawberry

Martinelli Alessio, Castagnoli Gianfranco, Leis Michelangelo,

4 records

Cleopatra

Active

Lolium perenne L. · Perennial ryegrass

DLF SEEDS A/S

4 records

Claudine

Active

Lolium perenne L. · Perennial ryegrass

DLF Seeds A/S

7 records

Charsano

Active

Beta vulgaris Leaf Beet Group · Swiss chard

Rijk Zwaan, NL

4 records

Cercy

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Rijk Zwaan Welver, D

4 records

Coriole

Active

Lactuca sativa L. · Lettuce

Syngenta Seeds B.V.

10 records

Corimbo

Active

Oryza sativa L. · Rice

Almo S.p.A.

5 records

Chancellor

Active

Festuca rubra L. · Red fescue

Oregro Seeds

5 records

Columbia

Active

Brassica napus var. napus · Rapeseed

MAS Seeds,FR

6 records

Cledor

Active

Linum usitatissimum L. · Common flax

Linéa Semences de Lin G.I.E.

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.