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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.

Maesta'

Active

Triticum durum Desf. · Durum wheat

REGAL SEMENTI SRL

IT
5 records

LG 30500

Active

Zea mays L. · Maize

Limagrain Europe, F

IT
9 records

I 24

Active

Olea europaea L. · Olive

Todolivo S.L.^^^Universidad de Córdoba

ES
9 records

I 20

Active

Olea europaea L. · Olive

Todolivo S.L.^^^Universidad de Córdoba

ES
12 records

NS Oskar

Active

Helianthus annuus L. · Sunflower

Radie Velimir, Cvejie Sandra, Jocie Sinisa,

UA
8 records

NS H 7749 SUMO

Active

Helianthus annuus L. · Sunflower

Institut za ratarstvo i povrtarstvo, Novi Sad

RO
5 records

LS-44

Active

Agrostis stolonifera L. · Creeping bentgrass

V.G. LEHMAN

IT
5 records

Fastball 3 GL

Active

Lolium perenne L. · Perennial ryegrass

Peak Plant Genetics, LLC & Rutgers, The State University of New Jersey

CZ
4 records

D 2212

Active

Malus Mill. · Apple

Seemüller Erich

DE
6 records

Blue Star

Active

Poa pratensis L. · Kentucky bluegrass

PURE SEED TESTING

IT
6 records

A13 72

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Masiá Ciscar S.L.

ES
8 records

CL 26

Active

Oryza sativa L. · Rice

ENTE NAZIONALE RISI

IT
5 records

Slingco 1

Active

Weigela Thunb. · Bush Honeysuckle

Verhoef Gijsbertus

4 records

Frank Jr.

Active

Acer rubrum L. · Red maple

Warren Keith S.|Gresham, OR, US

4 records

'Densipac'

Active

Prunus besseyi x Prunus cerasifera Ehrh

Pinochet Jorge

6 records

G 214

Active

Malus Mill. · Apple

Plants for Europe Ltd

5 records

Kirine 50

Active

Nemesia Vent. · Nemesia

Takeshita Daigaku|Tochigi-ken, JP

4 records

IB 920

Active

Helianthus annuus L. · Sunflower

Nidera S.A.

4 records

ET-CRX01

Active

Carex L. · Sedge

Noordhuis Bart / Bisschop Elisabeth

4 records

MAS 250 F

Active

Zea mays L. · Maize

MAS SEEDS

DE IT UA
6 records

LG 3267

Terminated

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

Limagrain Genetics Grandes Cultures SA (FR)

BE FR PL
5 records

LID 2662 C

Active

Zea mays L. · Maize

LIDEA FRANCE SAS

DE IT SK
4 records

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