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.

Matrix

Active

Cucumis sativus L. · Cucumber

Hybrids Ellas Abee

2 records

Masko

Active

Solanum lycopersicum L. · Tomato

Jean-Christophe Lepeltier

2 records

Malinowy Kujawski

Active

Solanum lycopersicum L. · Tomato

TORSEED - Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa S.A.

3 records

Melgic

Active

Cucumis melo L. · Melon

Sakata Vegetables Europe SARL (FR)

2 records

Mariia

Active

Triticum aestivum L. · Bread wheat

Usyk Liudmyla Oleksandrivna, Hrebeniuk Andrii Oleksandrovych, Honcharova Kapitalina V'iacheslavivna, Biliaieva Iryna Mykolaivna, Bazalii Halyna Hryhorivna, Orliuk Anatolii Pavlovych,

3 records

MARIANA_GF_8-1

Active

hybrids between Prunus davidiana and Prunus persica

2 records

Manarola

Active

Lactuca sativa L. · Lettuce

Vilmorin-Mikado SAS (FR)

2 records

Malbec

Active

Allium cepa L. var. cepa · Onion

Enza Zaden Beheer B.V.

3 records

Majorka

Active

Phaseolus vulgaris L. · Common bean

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

3 records

Macacha

Active

Solanum melongena L. · Eggplant

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

3 records

Malinowy Smaczek

Active

Solanum lycopersicum L. · Tomato

TORSEED - Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa S.A.

3 records

Malinowy Henryka

Terminated

Solanum lycopersicum L. · Tomato

Szkola Glowna Gospodarstwa Wiejskiego

3 records

Mallentra

Active

Capsicum annuum L. · Bell pepper

Enza Zaden Beheer B.V.

2 records

Mecenas

Active

Beta vulgaris Sugar Beet Group · Sugar beet

DLF Beet Seed APS

2 records

Majestic

Protection expired

Phaseolus vulgaris L. · Common bean

Rogers Brothers Seed Company

2 records

Meilezpha

Terminated

Rosa L. · Rose

ALAIN ANTOINE MEILLAND (FR)

2 records

Mako bello

Terminated

Allium porrum L. · Leek

ROGER MAES

2 records

Maestro F1

Application submitted

Daucus carota L. · Carrot

Vilmorin & Cie

4 records

Maestria

Active

Solanum lycopersicum L. · Tomato

Graines Gautier SA (FR)

3 records

Matina

Active

Solanum lycopersicum L. var. lycopersicum · Tomato

HILD SAMEN GMBH

2 records

Lueur

Terminated

x Festulolium Aschers. et Graebn. · Festulolium

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

3 records

MASmabay

Protection expired

Rosa L. · Rose

Roseraies Pierre Guillot, Roseraies Pierre Guillot

2 records

Luisa

Terminated

Solanum lycopersicum L. · Tomato

Hazera Genetics Ltd (IL)/Yissum Research dev of the Hebrew University of Jerusalem (IL)

2 records

Marcel

Active

Cucumis sativus L. · Cucumber

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

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.