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.

Waterlo CLP

Active

Helianthus annuus L. · Sunflower

RAGT 2N S.A.S

2 records

Violet star

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

LA SEMIORTO SEMENTI SRL

2 records

Veda

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Strube Saat GmbH&Co KG

2 records

Amisti CS

Active

Zea mays L. · Maize

CAUSSADE SEMENCES

2 records

Summer Dew

Active

Solanum lycopersicum L. · Tomato

Syngenta Crop Protection AG

2 records

Angara Smart

Active

Beta vulgaris Sugar Beet Group · Sugar beet

DLF Beet Seed APS

DE UA

2 records

Scarlet

Active

Solanum tuberosum L. · Potato

Sloots Aardappelkweekbedrijf B.V.

5 records

Słowiański

Terminated

Cucumis sativus L. · Cucumber

SPÓJNIA Hodowla i Nasiennictwo Ogrodnicze sp. z o.o.

2 records

Tribat I33

Active

Triticum aestivum L. · Bread wheat

SEMILLAS BATLLE, S.A.

3 records

Volodia

Active

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

Monsanto Technology LLC, US

2 records

SV5215TD

Active

Solanum lycopersicum L. · Tomato

Monsanto Vegetable Management, NL

3 records

Victoire

Terminated

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

3 records

RGT Zaragozac

Active

x Triticosecale Wittm. ex A. Camus · Triticale

RAGT 2n

3 records

Unidarkwin

Active

Solanum lycopersicum L. · Tomato

UNIGENIA SEMILLAS, S.L.U.

2 records

Rejent

Active

Cucumis sativus L. · Cucumber

PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.

2 records

SM Chopin

Active

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

Hodowla Roslin Smolice Sp.z o.o Grupa IHAR

3 records

Syriusz Bis

Active

Beta vulgaris Fodder Beet Group · Mangelwurzel

Malopolska Hodowla Roslin Spolka z o.o.

2 records

Shinako

Active

Capsicum annuum L. · Bell pepper

Shevchenko Igor

3 records

Tacito

Active

Triticum durum Desf. · Durum wheat

S.I.S. SOCIETA' ITALIANA SEMENTI

3 records

RGT Campurriano

Active

Triticum aestivum L. · Bread wheat

RAGT 2n

3 records

Samsara

Active

Cucurbita pepo L. · Field pumpkin

Sativa Rheinau AG (CH)

2 records

Sagranor

Active

Cucumis melo L. · Melon

Syngenta Seeds BV (NL)

3 records

NUN 67007

Active

Cucumis melo L. · Melon

Nunhems B.V.

2 records

Rakete

Active

Asparagus officinalis L. · Asparagus

Südwestdeutsche Saatzucht GmbH&Co.KG

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.