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.

Aperida

Active

Cichorium endivia L. · Endive

Enza Zaden Beheer B.V.

4 records

Axati

Active

Allium cepa L. var. cepa · Onion

MERIDIEM SEEDS S.L.

2 records

Avalon RM

Terminated

Helianthus annuus L. · Sunflower

EURALIS GENETIQUE

2 records

APOLLO

Application submitted

Brassica oleracea L. (Broccoli Group) · Broccoli

PRO-VEG SEEDS LTD

2 records

Areti

Protection expired

Solanum lycopersicum L. · Tomato

HAO-DEMETER Agricultural Research Center of Macedonia and Thrace (ARCOMAT)

2 records

Atavir

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

4 records

Amboise

Terminated

Festuca rubra L. · Red fescue

PLANCHARD INTERNATIONAL (FR)

2 records

Angelique

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

4 records

Apollo

Terminated

Cucurbita pepo L. · Field pumpkin

PEOTEC S.R.L.

2 records

Armonia

Active

Cucumis melo L. · Melon

UNITED GENETICS SEEDS CO

2 records

Alexandria

Active

Cucurbita pepo L. · Field pumpkin

OI ZHANG

2 records

Alme

Active

Brassica oleracea L. (Kohlrabi Group) · Kohlrabi

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

2 records

Arazi

Withdrawn

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

Syngenta Crop Protection AG

2 records

Arameus

Active

Triticum aestivum L. · Bread wheat

Saatzucht Donau GmbH & Co.KG

3 records

Antipasti

Active

Lactuca sativa L. · Lettuce

Vilmorin-Mikado SAS (FR)

2 records

Amanda

Active

Solanum melongena L. · Eggplant

Enza Zaden Beheer B.V.

2 records

Akilina

Active

Cucumis sativus L. · Cucumber

Paul Degreef

3 records

Alatesta

Application submitted

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

3 records

Almota

Protection expired

Pisum sativum L. · Pea

Ardie G. Gustafson, Seedsman

2 records

Advancegrazer

Terminated

Sorghum x drummondii (Steud.) Millsp. & Chase · Sudangrass

ADVANCE SEED PTY LTF

2 records

Akhelia

Active

Triticum aestivum L. · Bread wheat

Agricultural Research Institute

2 records

Alicia

Terminated

Cucurbita pepo L. · Field pumpkin

HM.Clause S.A.S.

3 records

Acropole

Active

Lactuca sativa L. · Lettuce

Syngenta Crop Protection AG

4 records

Alegro

Terminated

Solanum lycopersicum L. · Tomato

ZERAIM GEDERA

2 records

1 2 ... 215 216 217 218 219 220 221 ... 332 333 Next

Jump to page 48 95 118 143 190 208 228 238 285 318

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

All terms →

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.