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.

Nanook

Active

Festuca ovina L. · Sheep's fescue

PURE SEED TESTING

4 records

Nofy

Active

Solanum tuberosum L. · Potato

Andelskartoffelmelsfabrikken Vendsyssel A.m.b.A. (AKV Langholt A.m.b.A.)

5 records

Nada

Active

Solanum lycopersicum L. · Tomato

SMEDEKS Co d.o.o

3 records

Negev

Active

Festuca trachyphylla (Hack.) Hack. · Hard fescue

DEUTSCHE SAATVEREDELUNG AG

4 records

Murgavetz

Active

Triticum aestivum L. · Bread wheat

Mariyka Stamenova, Petko Stefanov

4 records

Mohykan

Active

Brassica oleracea L. (Red Cabbage Group) · Red cabbage

MORAVOSEED

3 records

Nicoleta

Active

Pisum sativum L. · Pea

DRAGHICIOIU AURELIA

4 records

Monsieur

Active

Lolium perenne L. · Perennial ryegrass

DLF Pickseed USA, Inc. and Rutgers, The State University of New Jersey

3 records

Mobela

Terminated

Triticum aestivum L. · Bread wheat

Danko Hodowla Roslin Sp.z.o.o.

4 records

Misterio

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

4 records

Miriago

Active

Lactuca sativa L. · Lettuce

Syngenta Seeds B.V.

5 records

Nefertari

Active

Triticum aestivum L. · Bread wheat

ISEA S.R.L

4 records

Moa

Active

Trifolium resupinatum L. · Persian clover

AG RESEARCH - PASTORAL AGRICULTURE RESEARCH INSTITUTE

4 records

Mykonos

Active

Brassica oleracea L. (Broccoli Group) · Broccoli

SAKATA SEED CORPORATION / SAKATA SEED CORPORATION

5 records

Minerva

Active

Triticum aestivum L. · Bread wheat

ISEA S.R.L

4 records

Metro

Active

Daucus carota L. · Carrot

Carosem, NL

3 records

Mervue

Terminated

Lolium perenne L. · Perennial ryegrass

EIGEN VERMOGEN VH INSTITUUT VOOR LANDBOUW- EN VISSERIJONDERZOEK

4 records

Miliari

Active

Cichorium endivia L. · Endive

Enza Zaden Beheer B.V.

6 records

Mr. S. 2/5

Active

Prunus cerasifera Ehrh. · Cherry plum

3 records

MI 793

Active

Malus Mill. · Apple

3 records

Momentous

Active

Lactuca sativa L. · Lettuce

NUNHEMS

5 records

Melvine

Active

Lactuca sativa L. · Lettuce

HM.CLAUSE

4 records

Mirage 2

Active

Cynodon dactylon (L.) Pers. · Bermuda grass

DLF-TRIFOLIUM DANSK PLANTEFORAEDLING

4 records

McNair 220

Active

Gossypium hirsutum L. · Upland cotton

STONEVILLE PEDIGREED SEED COMPANY

3 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.