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.

SY Vectra

Active

Zea mays L. · Maize

Syngenta Crop Protection AG

2 records

SVPB1008

Active

Capsicum annuum L. · Bell pepper

Bayer Holland B.V.

2 records

Super Moon

Active

Poa pratensis L. · Kentucky bluegrass

PURE SEED TESTING

2 records

SY Orpheus

Active

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

Syngenta Participations AG| CH

2 records

Sudorus

Active

Zea mays L. · Maize

Syngenta participation AG

2 records

Sweet Tule

Active

Allium cepa L. var. cepa · Onion

Bejo Zaden B.V., De Groot en Slot B.V.

3 records

SU AB 4

Active

Helianthus annuus L. · Sunflower

Cvejic Sandra, Jocic Sinisa,

4 records

Supair

Active

Poa supina Schrad. · Supina bluegrass

Saatzucht Steinach GmbH & Co KG Frau Stefanie Pfeil

2 records

SVDC2089

Application submitted

Daucus carota L. · Carrot

Bayer Holland B.V.

2 records

ST Krakow

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Strube D&S GMBH

2 records

SV9790MC

Active

Cucumis melo L. · Melon

Monsanto Vegetable IP Management B.V.

3 records

Stroman 254

Active

Gossypium hirsutum L. · Upland cotton

GROWER SEED ASS.

2 records

SV9480YG

Terminated

Cucurbita pepo L. · Field pumpkin

Bayer Holland B.V.

4 records

Super Sugar Snap

Active

Pisum sativum L. · Pea

Syngenta Participations AG

2 records

ST Gdansk

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Strube D&S GMBH

2 records

Supermangetout

Terminated

Pisum sativum L. · Pea

Domaine Public (FR)

2 records

Starter

Active

Cucumis sativus L. · Cucumber

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

3 records

St. Julien A

Active

Prunus domestica L. subsp. insititia (L.) C. K. Schneid. · Damson

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

3 records

Sponsor

Active

hybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner

HM Clause SAS (FR)

2 records

ST Tweed

Active

Beta vulgaris Sugar Beet Group · Sugar beet

STRUBE D and S GMBH

2 records

ST Tourmalet

Active

Beta vulgaris Sugar Beet Group · Sugar beet

STRUBE D&S GmbH, DE

2 records

Sor Angela

Terminated

Gossypium hirsutum L. · Upland cotton

JUNTA DE ANDALUCIA CONSEJERIA DE AGRICULTURA Y, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)

3 records

Spitfire

Active

Brassica napus L. · Rapeseed

NEW ZEALAND INSTITUTE FOR PLANT AND FOOD

2 records

SM Zadra

Active

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

Hodowla Roslin Smolice Sp.z o.o Grupa IHAR

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.