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.

Kneja 572

Active

Zea mays L. · Maize

Maize Research Institute - Kneja (BG)

2 records

Kurant

Withdrawn

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

Malopolska Hodowla Roslin Spolka z o.o.

2 records

Kiklop F1

Terminated

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

Petr Klapshtie, Petr Horal, Yirzhi Horal,

2 records

KXA4391

Terminated

Zea mays L. · Maize

KWS SAAT SE & CO.KGAA

1 record

Kubok F1

Terminated

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

Robert Priieur

2 records

KVS Heliia 06

Terminated

Helianthus annuus L. · Sunflower

Martin Gansmann

2 records

Krymsk 86

Active

Prunus L. · Plum

Information not available - Contact NL authorities

1 record

Kvadry F1

Terminated

Capsicum annuum L. · Bell pepper

Jan Prasil

1 record

KHE9411R

Active

Helianthus annuus L. · Sunflower

Nuseed Spain S.L.

2 records

Kuroda Chantenay

Active

Daucus carota L. · Carrot

Jun Kida

2 records

Kilagreg F1

Terminated

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

SJAAK VAN DER PLOEG

1 record

Kirdeikiai

Protection expired

Ribes uva-crispa L. · Gooseberry

Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas

1 record

Kudret

Withdrawn

Solanum lycopersicum x Solanum pimpinellifolium · Tomato

Multi Tohum San. Tic. A.S.

2 records

Kh 503 B

Terminated

Helianthus annuus L. · Sunflower

Shepilov Borys Petrovych, Popova Ol`ha Andriivna, Petrenkova Vira Pavlivna, Veselyi Vitalii Oleksandrovych, Kuzmyshena Nadiia Viktorivna, Syvenko Valentyna Ivanivna, Alad`ina Zoia Kyrylivna, Makliak Kateryna Mykolaivna, Kyrychenko Viktor Vasylovych,

2 records

Kredo F1

Active

Cucumis melo L. · Melon

Maria-Angeles Benedi

2 records

Kebton F1

Terminated

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

Ger Beemsterboer

1 record

Kozats`kyi

Active

Hordeum vulgare L. · Barley

Rasiuk Nataliia Ivanivna, Sardak Mariia Ivanivna, Sardak Mykola Oleksiiovych,

2 records

Kastyliia

Active

Helianthus annuus L. · Sunflower

Koval`ov Volodymyr Hryhorovych, Zaitsev Oleksii Borysovych,

2 records

Kartier F1

Active

Solanum lycopersicum L. · Tomato

Mercier Jean-Claude

2 records

Katrin

Terminated

Heuchera L. · Coral Flower

Andrukh Nataliia Anatoliivna, Horobets Vasyl Fedorovych,

2 records

Katiusha

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

Shtainriuken Herkhard

1 record

Kärntner Früher

Active

Triticum aestivum L. subsp. aestivum · Bread wheat

Kärntner Saatbau e.Gen.

1 record

Kolia F1

Terminated

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

P.J. Struik

2 records

Koltan F1

Terminated

Daucus carota L. · Carrot

Khans Kole

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.