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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.

Limerock Dream

Terminated

Coreopsis verticillata L. · Whorled tickseed

PAMELA S.SCHWEIZER

1 record

LIMABI30

Withdrawn

Zea mays L. · Maize

Limagrain Europe S.A.S

1 record

Lillian

Active

Kalanchoe Adans. · Kalanchoe

Knud Jepsen A/S

1 record

JS Engeltje

Active

Echinacea pallida (Nutt.) Nutt. x E. purpurea (L.) Moench

Spruyt Select CommV

1 record

Leonore

Terminated

Lactuca sativa L. · Lettuce

Barb Neubert

1 record

Landelaware

Active

Mandevilla sanderi (Hemsl.) Woodson · Brazilian jasmine

D.H.M Innovation S.A.S.

1 record

Isadora

Application submitted

Hybrids between Pyrus communis and P. ussuriensis

Research Institute For Fruit Growing Pitesti - Maracineni

1 record

KLEVP22142

Active

Verbena L. · Vervain

Ruijun Li

1 record

KLEVP13447

Withdrawn

Verbena L. · Vervain

Ruijun Li

1 record

Jeannette

Active

Castanea Mill. · Chestnut

Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE) , Centre Technique Interprofessionnel des Fruits et des Légumes (CTIFL), Invenio

1 record

KLEVE03321

Terminated

Verbena L. · Vervain

Graham N. Brown

1 record

Helios

Active

Humulus lupulus L. · Common hop

S.S. Steiner Inc.

1 record

KLEPH24805

Application submitted

Petunia x atkinsiana D. Don · Garden petunia

Antonella Capo

1 record

KLECA23992

Application submitted

Calibrachoa Cerv. · Calibrachoa

Angelo Carrella

1 record

Kiastgrana

Withdrawn

Aster dumosus L. · Bushy aster

Andreas Niederländer

1 record

Geneva

Active

Kalanchoe Adans. · Kalanchoe

Knud Jepsen A/S

1 record

H220909

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Hydrangea Breeders Association B.V.

1 record

IRTAMB-A23-57

Active

Prunus dulcis (Mill.) D. A. Webb · Almond

IRTA (G. CATALUÑA)

1 record

Inerywisun

Terminated

Erysimum L. · Wallflower

Silvia Hofmann

1 record

Florence

Terminated

Kalanchoe blossfeldiana Poelln. · Flaming Katy

Knud Jepsen

1 record

INTRAIKUM

Terminated

Nemesia Vent. · Nemesia

Silvia Hofmann^^^HENDRIK THEOBALD

1 record

Green Unicorn

Application submitted

Alocasia azlanii K. M. Wong & P. C. Boyce x A. baginda Kurniawan & P. C. Boyce

Lindsay Sisti

1 record

Gold Queen

Protection expired

Euonymus japonicus Thunb. · Japanese spindle

Handelskwekerij van der Velden B.V.

1 record

Eureka!

Active

Humulus lupulus L. · Common hop

Roger D Jeske

1 record

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