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.

RW20957

Active

Triticum aestivum L. · Bread wheat

RAGT 2N S.A.S

1 record

Runi

Active

Zea mays L. · Maize

Kalinichenko Artem Oleksandrovych

2 records

RP 521

Terminated

Helianthus annuus L. · Sunflower

RHONE POULENC AGROCHIMIE (FR)

1 record

ROYAL VANTAGE F1

Terminated

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

Sakata Seed Corporation, JP

1 record

Santamaria F1

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

2 records

ROYAL GLORY ZAIFER

Terminated

Prunus persica (L.) Batsch · Peach

F.ZAIGER

1 record

Rustler

Withdrawn

Festuca arundinacea Schreb. · Tall fescue

Grassland Oregon

1 record

Royalty F1

Terminated

Zea mays L. subsp. mays (Sweet Corn Group) · Sweet corn

Pop Vriend Seeds B.V.

1 record

Rubybor

Application submitted

Brassica oleracea L. (Curly kale Group) · Curly kale

Bejo Zaden B.V.

2 records

Rodničiok

Terminated

Cucumis sativus L. · Cucumber

FGUP ,,Volgogradsortsemovošč"

1 record

Rosamaria

Terminated

Alstroemeria L. · Alstroemeria

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

1 record

RIMISOL 2

Withdrawn

Helianthus annuus L. · Sunflower

INST.FIELD VEGETABLE CROP

1 record

RM 91

Terminated

Sorghum bicolor (L.) Moench subsp. bicolor · Sorghum

Sud Cereales (FR)

1 record

Rodos F1

Terminated

Cucumis sativus L. · Cucumber

Henrikh IUst

2 records

Riteil

Terminated

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

Naumov Ruslan Olehovych, Krasnok Viacheslav Anatoliiovych,

2 records

RGT Huxxo Waxy

Withdrawn

Zea mays L. · Maize

RAGT 2n, FR

1 record

Rio Dulce

Withdrawn

Allium cepa L. var. cepa · Onion

Rio Colorado Seeds Inc. (US)

1 record

RGT Huxxo waxy

Active

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

RAGT 2n, FR

1 record

RGT Buffalo

Active

Helianthus annuus L. · Sunflower

RAGT 2N S.A.S

1 record

Romantyk

Terminated

Helianthus annuus L. · Sunflower

Molodchenkova Olha Olehivna, Babich Valerii Ivanovych, Hanzhelo Mykola Hryhorovych, Libenko Mykola Oleksandrovych, Varenyk Borys Fedorovych, Krut`ko Vasyl` Ivanovych,

2 records

Rhodunter 10

Protection expired

Rhododendron molle (Blume) G. Don · Chinese azalea

Preil

1 record

Red Rum F1

Active

Allium cepa L. · Onion

Ger Beemsterboer

1 record

RGT ALEХХ

Active

Zea mays L. · Maize

Stephane Melkior

1 record

Réselle

Active

Vitis L. · Grapevine

Blattner Valentin (CH)

1 record

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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.