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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.

MH 4124

Withdrawn

Beta vulgaris Sugar Beet Group · Sugar beet

DLF BEET SEED A.P.S.

ES
1 record

Marcsika

Active

Rosa L. · Rose

Mark Gergely / Mark Gergelyne

HU
2 records

Medeia

Withdrawn

Allium cepa L. var. cepa · Onion

TAKII & CO LTD

NL
2 records

Manosk

Active

Cucurbita moschata Duchesne · Butternut squash

Ralf Kuijpers

UA
2 records

Małgosia

Terminated

Callistephus chinensis (L.) Nees · China aster

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

PL
1 record

Malike F1

Terminated

Solanum lycopersicum L. · Tomato

Jean Clause Mercier

UA
2 records

MDM3403

Active

Zea mays L. · Maize

MAS SEEDS

IT
1 record

Maibakh

Application submitted

Brassica napus L. · Rapeseed

Parii, Myroslav Parii, Iaroslav Breus, Oksana Parii, Iuliia Sydorov, Andrii

UA
1 record

Mediterraneo

Application submitted

Cupressus L. · Cypress

PANCONESI ALBERTO C/O C.N.R. / RADDI PAOLOC/O C.N.R.

IT
1 record

Lucis

Withdrawn

Zea mays L. · Maize

PAU SEMENCES

IT
1 record

MADRID

Withdrawn

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

ZETA SEEDS S.L.

ES
1 record

Marylka

Active

Berberis thunbergii DC. · Japanese barberry

Dariusz Kapias

PL
1 record

Lorraine

Application submitted

Lactuca sativa L. · Lettuce

ReinSaat KG

AT
1 record

LYSIMA

Terminated

Pisum sativum L. · Pea

FORSTANDER J.MØLLER

DK
2 records

Lord F1

Terminated

Cucumis sativus L. · Cucumber

Krylov Oleh Mykolaiovych, Borysov Oleksandr Volodymyrovych,

UA
1 record

Maradonna F1

Terminated

Capsicum annuum L. · Bell pepper

F.della Rocca

UA
2 records

Lisander

Application submitted

Solanum lycopersicum L. · Tomato

Syngenta Crop Protection AG

NL
2 records

LQH308

Terminated

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

Maisadour Societe Cooperative Agricole (FR)

FR
1 record

Lioba

Terminated

Poa supina Schrad. · Supina bluegrass

BUSCH| Dipl.Ing.agr. Heiner Busch in Fa. Deutsche Saatveredelung AG / SCHUETZE| Dr. Ursula Schuetze in Fa. Saatzucht Leutewitz

DE
1 record

Mariensteiner

Protection expired

Vitis vinifera L. · Common grape vine

LAND BAYERN WUERZBURG| Land Bayern, vertreten durch Bayerische Landesanstalt fuer Weinbau und Gartenbau - Abt. Weinbau und Oenologie -

DE
2 records

LID Invicto

Application submitted

Brassica napus L. · Rapeseed

LIDEA FRANCE SAS

LT
1 record

Livio

Application submitted

Asparagus officinalis L. · Asparagus

BLUMEN GROUP S.P.A

IT
1 record

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