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.

Rosario

Terminated

Lactuca sativa L. · Lettuce

Graines Gautier SA (FR)

3 records

Ronino

Terminated

Cucumis sativus L. · Cucumber

Zeraim Gedera Ltd (IL)

2 records

Riva

Active

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

Syngenta Seeds B.V.

2 records

Ribella

Protection expired

Beta vulgaris Sugar Beet Group · Sugar beet

ZAVANELLA| Dr. M. Zavanella c/o S.E.S. Italia

3 records

RGT Flac

Active

x Triticosecale Wittm. ex A. Camus · Triticale

RAGT 2n, FR

2 records

RGT Keos

Active

Brassica napus var. napus · Rapeseed

RAGT 2n, FR

2 records

Retaca

Terminated

Vicia faba L. var. major Harz · Broad bean

INIA&JUNTA ANDALUCIA

2 records

Redshine

Active

Allium cepa L. var. cepa · Onion

Hazera Seeds B.V.

3 records

Renarde

Active

Lactuca sativa L. · Lettuce

Gautier Semences SAS (FR)

2 records

Remiz

Active

Cucumis sativus L. · Cucumber

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

3 records

Rogowska

Active

Brassica rapa L. var. rapa (L.) Thell. · Turnip

Firma Nasienna GRANUM - Z. Manias - S. Menc - J. Szymański Spółka Jawna

2 records

Rognon de Pont l'Abbé

Active

Phaseolus vulgaris L. · Common bean

Domaine Public (FR)

2 records

Ricca

Active

Solanum lycopersicum L. · Tomato

ReinSaat KG

2 records

Refleks

Active

Avena sativa L. · Oat

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

5 records

Rodonit

Active

Malus domestica (Suckow) Borkh. · Apple

Gitta Ficzek^^^Magdolna Tóth^^^Krisztina Honty^^^László Szalay

3 records

Red Silk

Active

Allium cepa L. var. cepa · Onion

Bejo Zaden B.V.

3 records

Reine-Claude GF 1380

Active

Prunus domestica L. · European plum

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

2 records

Red River

Terminated

Allium cepa L. var. cepa · Onion

CROOKHAM COMPANY

3 records

Red Dawn

Active

Beta vulgaris Garden Beet Group · Garden beet

Winseed International Ltd (NZ)

2 records

Radu

Active

Cucurbita pepo L. · Field pumpkin

AGROSEL S.R.L.

3 records

Ramonete

Active

Capsicum annuum L. · Bell pepper

SEMILLAS FITO, S.A.

2 records

Raffy

Active

Solanum lycopersicum L. · Tomato

Gautier Semences SAS (FR)

3 records

Raco

Protection expired

Hydrangea L. · Hydrangea

PREISIG WALTER

2 records

Quione

Active

Lactuca sativa L. · Lettuce

Vilmorin-Mikado SAS (FR)

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.