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.

ADV 765

Application submitted

Zea mays L. · Maize

Advanta Seed International

1 record

8Kh288KPDM

Terminated

Helianthus annuus L. · Sunflower

Steve Thompson

2 records

Zalsacharbla

Active

Alstroemeria L. · Alstroemeria

Van Zanten Breeding B.V.

1 record

Albana

Application submitted

Solanum melongena L. · Eggplant

CORA SEEDS S.R.L

1 record

Yuma

Active

Diplotaxis tenuifolia (L.) DC. · Perennial wall-rocket

MARALDI SEMENTI S.r.l.

1 record

4475

Active

Hybrids between Citrus x aurantium L. x Citrus trifoliata L.

INCONNU (FR)

1 record

Akvilon F1

Protection expired

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

Monakhos Hryhorii Fedorovych

2 records

5R09

Withdrawn

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

1 record

5038H

Active

Helianthus annuus L. · Sunflower

Euralis Semences

1 record

Wild Eclaire

Active

Rosa L. · Rose

Marchenrose Co. Ltd.

1 record

ACRESTA

Withdrawn

Solanum tuberosum L. · Potato

Veenkoloniale Boeren Bond (NL)

1 record

Abrikooskers

Active

Prunus avium (L.) L. · Sweet cherry

Information not available - Contact NL authorities

1 record

Zalsazora

Terminated

Alstroemeria L. · Alstroemeria

van Zanten Plants b.v

1 record

6205

Terminated

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

Dekalb Genetics Corporation (usa) (US)

1 record

4CD

Terminated

Festuca rubra L. · Red fescue

PURE SEED TESTING

1 record

Vision

Protection expired

Astilbe Buch.-Ham. ex D. Don · False goat's beard

Gerardus Johannes van Veen

1 record

Vigilarum B

Active

Vitis vinifera L. · Common grape vine

Donato Antonacci

1 record

9K918

Active

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

1 record

3309 C

Active

Vitis L. · Grapevine

INCONNU (FR)

1 record

5K29

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

1 record

1054L SU

Active

Helianthus annuus L. · Sunflower

Euralis Semences

1 record

43 38 RZ

Withdrawn

Lactuca sativa L. · Lettuce

RIJK ZWAAN Z.Z. B.V.

1 record

331

Terminated

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

PANNAR UK LTD.

1 record

Vision Vulcano

Active

Astilbe Buch.-Ham. ex D. Don · False goat's beard

Wilhelmus Franciscus van Veen

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.