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.

Janus CL

Withdrawn

Helianthus annuus L. · Sunflower

Euralis Semences

1 record

IDALIA

Active

Lactuca sativa L. · Lettuce

MERIDIEM SEEDS S.L.

1 record

II. Janos Pal papa emleke

Terminated

Rosa L. · Rose

Mark Gergely / Mark Gergelyne

1 record

IGP12

Active

Festuca arundinacea Schreb. · Tall fescue

PGG Wrightson Seeds South America

1 record

Jakady

Application submitted

Lactuca sativa L. · Lettuce

Gautier Semences SAS (FR)

1 record

Jaguar F 1

Withdrawn

Solanum lycopersicum L. · Tomato

Seminis Vegetables (NL)

1 record

Hrand Etalon

Terminated

Allium cepa L. · Onion

Holovchenko Roman Oleksandrovych,Holovchenko Oleksandr IAkovych,

2 records

Jabłkowy GOF

Terminated

Apium graveolens L. var. rapaceum (Mill.) Gaud. · Celeriac

PlantiCo Hodowla i Nasiennictwo Ogrodnicze Golebiew sp. z o.o.

1 record

Hrand Admiral

Active

Helianthus annuus L. · Sunflower

Chepolkina Tetiana Fedorivna

2 records

Ironman F1

Active

Brassica oleracea L. (Broccoli Group) · Broccoli

Hari Besels

1 record

ISCI7

Withdrawn

Brassica carinata A. Braun · Ethiopian mustard

CREA- CENTRO DI RICERCA PER LE COLTURE INDUSTRIALI (CREA-CI-BO)

1 record

INX 1624

Active

Solanum lycopersicum L. · Tomato

Khaled Kazzaz

1 record

Inra 4701

Protection expired

Helianthus annuus L. · Sunflower

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

1 record

Herman ISK

Active

Prunus domestica L. · European plum

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

1 record

Heinz 2206 F1

Terminated

Solanum lycopersicum L. · Tomato

Dale M. Smith

2 records

ICMC629

Terminated

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

CIBA GEIGY, S.A.

1 record

HECTOR

Terminated

Capsicum annuum L. · Bell pepper

WESTERN SEED ESPAÑA, S.A.

1 record

Hector F1

Terminated

Solanum lycopersicum L. · Tomato

Jean Clause Mercier

2 records

I 4545

Active

Zea mays L. · Maize

Drobiazko IUrii Hennadiiovych

2 records

Idice

Active

Triticum L. · Wheat

CAVAZZA ISOLANI FRANCESCO

1 record

HYSUN232 HO

Withdrawn

Helianthus annuus L. · Sunflower

Advanta Seed International

1 record

Hordovyta

Terminated

Triticum aestivum L. · Bread wheat

Cherniaieva Iryna Mykolaivna, Riabchun Nataliia Ivanivna, Luchnoi Vadym Vitaliiovych, Didenko Svitlana IUriivna, Panchenko Ivan Arkhypovych, Iodkovs`kyi Vladystlav Zdislavovych, Zviahin Andrii Fedorovych, Hridin Mykola Mykolaiovych, Yel`nikov Mykola Ivano

2 records

HYBRID 9889

Terminated

Solanum lycopersicum L. · Tomato

PETOSEED CO

1 record

Hitomax

Active

Solanum lycopersicum L. · Tomato

Shevchenko Ihor Andriiovych

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.