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.

Zumrut F1

Withdrawn

Cucurbita pepo L. · Field pumpkin

Ahmet Oktay Turhan

2 records

Ҫakir

Active

Cicer arietinum L. · Chickpea

Geçit Kusagi Tarimsal Arst.Enst.Müd. (TR)

1 record

ZO85

Terminated

Helianthus annuus L. · Sunflower

KOIPESOL SEMILLAS, S.A.

1 record

Zhako

Active

Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon

Seongiun Kim

2 records

Zefir F1

Terminated

Cucumis sativus L. · Cucumber

Dymchenko Tetiana Mykolaivna, Muzhylko Viktor Valentynovych,

2 records

Zahora

Application submitted

Lactuca sativa L. · Lettuce

Vilmorin-Mikado SAS (FR)

1 record

Zlit kharkivs`kyi

Terminated

x Triticosecale Wittm. ex A. Camus · Triticale

Padalka Olena Ivanivna, Chernobai Serhii Volodymyrovych, Shcechenko Olha IEvheniivna, Melnyk Vira Serhiivna, Kapustina Tetiana Borysivna, Riabchun Viktor Kuzmych,

2 records

Yuvileinyi Semko

Application submitted

Capsicum annuum L. · Bell pepper

Timina Ol`ha Olehivna

1 record

Yuki

Protection expired

Brassica rapa L. subsp. chinensis (L.) Hanelt · Bok choy

Sakata Seed Corporation

1 record

YeS Amiho

Active

Zea mays L. · Maize

Tovarystvo z obmezhenoiu vidpovidalnistiu «IEvrosem»

2 records

Yodebo

Terminated

Chrysanthemum x morifolium Ramat. · Florist's daisy

William E. Duffett / Grace H. Mack

1 record

Żnin

Terminated

Cotoneaster horizontalis Decne. · rock cotoneaster

"Zakład Szkółkarski ""Żywotnik"" Edward Tuczyński"

1 record

YeS Avalon

Active

Helianthus annuus L. · Sunflower

Posunko Anton Olehovych, Shatsman Dmytro Oleksandrovych,

2 records

Zieverich

Terminated

Salix L. · Willow

SIEBERT| Dr. Horst Siebert

1 record

Xilaide No1

Active

Solanum lycopersicum L. · Tomato

Xiangfu Li

1 record

YACO

Withdrawn

Triticum aestivum L. · Bread wheat

SEM.AGRICOLAS

1 record

Yuiusha

Active

Primula L. · Primrose

Natsionalnyi botanichnyi sad im. M. M. Hryshka Natsionalnoi akademii nauk Ukrainy

2 records

Yani F1

Active

Cucumis sativus L. · Cucumber

Ab Van Ende, Kiis Van de Maas,

1 record

YOREME

Terminated

x Triticosecale Wittm. ex A. Camus · Triticale

SARH-INIA

1 record

YeS Fortem

Active

Helianthus annuus L. · Sunflower

Koretskyi Oleksandr Yevheniiovych, Shatsman Dmytro Oleksandrovych

1 record

Yuvileine Volyns`ke

Terminated

x Triticosecale Wittm. ex A. Camus · Triticale

Borys Vitalii Stepanovych, Mazuryk Mykola Fedorovych, Biliiuk Ana`olii Petrovych, Sheredko Leonid Mykolaiovych,

2 records

Wisana

Terminated

Nicotiana tabacum L. · Tobacco

Centralne Laboratorium Przemyslu Tytoniowego

1 record

Wirgo

Active

Nicotiana tabacum L. · Tobacco

Instytut Uprawy Nawożenia i Gleboznawstwa Państwowy Instytut Badawczy

1 record

YANG TSE

Protection expired

Lagerstroemia indica L. · Crape myrtle

Pepinieres DESMARTIS SA (FR)

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.