Variety traits

Cold tolerance

Cold tolerance is a biological characteristic of a variety that determines its ability to develop and maintain productivity under prolonged exposure to low positive temperatures (from +1 to +10 °C).

Mentioned in descriptions 2 844 varieties reference book.

Cold tolerance represents the ability of an organism to maintain normal metabolism, protoplasm structure, and enzymatic activity under conditions where thermophilic crops begin to slow growth, yellow, and lose turgor. Unlike winter hardiness, this indicator does not imply the tolerance of sub-zero temperatures and freezing of tissues. In practice, a cold-tolerant variety allows for early sowing in unheated soil, reduces the risk of seedling death during spring cold snaps, contributes to the efficient use of winter moisture, and accelerates development, which often leads to earlier maturity.

Field and laboratory evaluation methods are used during variety testing. The field methodology includes phenological observations of growth rates during early sowing, visual assessment of survival after temperature stress, and structural analysis of the impact of conditions on yield components. In laboratory settings, a 'cold test' is used for seed germination in incubators at reduced temperatures followed by further growth, as well as biochemical analysis, such as determining the level of free proline in leaves.

Cold tolerance is expressed through a coefficient calculated as the ratio of performance in stress conditions to control conditions, or through percentage values of germination. Based on these data, varieties are divided into groups by resistance level. An important indicator is the temperature minimum at which crop growth ceases, which is about +4 °C for most plants and up to +10 °C for maize. Variety selection requires consideration of the biological characteristics of the crop, as this trait is critical for thermophilic plants at the early development stage.

Sources10

Breakdown by crop

Cold tolerance of maize 73 Cold tolerance of lettuce 19 Cold tolerance — soybean 15 Cold tolerance of maize 13 Cold tolerance of pea 11 Cold tolerance of endive 10 Cold tolerance of chicory 9 Cold tolerance of cucumber 9 Tomato cold tolerance 9 Cold tolerance of parsley 8 Cold tolerance of sunflower 8 Cold tolerance of spinach 7 Cold tolerance of turnip 7 Cold tolerance — Leek 7 Cold tolerance of carrots 7 Cold tolerance — soft wheat 7 Cold Hardiness of Savoy Cabbage 6 Cold tolerance — white cabbage 6 Cold tolerance — fava bean 5 Cold tolerance of faba beans 5 Cold tolerance — Black radish 5 Cold resistance of radish 5 Cold tolerance of Anthurium andraeanum 5 Cold tolerance of rice 5

Found in these crops

Maize 261 Maize 75 Olive 51 Anthurium 35 Lettuce 27 Sunflower 27 Tomato 24 Cucumber 24 Soybean 21 Leek 17 Spinach 15 Chicory 15

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.

Kaukas

Protection expired

Zea mays L. · Maize

KWS SAAT SE and CO KGAA

4 records

Kalabas

Terminated

Zea mays L. · Maize

KWS SAAT SE and CO KGAA

3 records

Josefine

Active

Glycine max (L.) Merr. · Soybean

Saatzucht Gleisdorf

3 records

Half Pint

Active

Pisum sativum L. · Pea

THOMPSON and MORGAN

3 records

Hanga LM

Active

Zea mays L. · Maize

WOODSTOCK KFT

3 records

Giove

Active

Cichorium intybus L. · Chicory

Henk Driessen

4 records

GL Hermine

Active

Glycine max (L.) Merr. · Soybean

Saatzucht Gleisdorf

3 records

Genesi

Active

Foeniculum vulgare Mill. · Fennel

Enza Zaden Beheer B.V.

5 records

Genius

Active

Brassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts

Syngenta Seeds B.V.

3 records

Enorma

Active

Phaseolus coccineus L. · Runner bean

NLX1

4 records

DS Claudia

Active

Vicia sativa L. · Common vetch

D'EUGENIO SEMENTI

3 records

Dojran

Active

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

Syngenta Crop Protection AG

3 records

DMS Super

Active

Zea mays L. · Maize

NAUCHNO-PROIZVODSTVENNOE FERMERSKOE XOZYAJSTVO «KOMPANIYA «MAIS»

4 records

DMS Koral

Active

Zea mays L. · Maize

Shevchenko Serhii Oleksandrovych, Halechko Ivan Dmytrovych, Borysov Viktor Mykolaiovych,

4 records

Doblona

Active

Hordeum vulgare L. · Barley

SEMILLAS BATLLE, S.A.

5 records

C. S. .S. 22 DIANA

Active

Olea europaea L. · Olive

4 records

Darkibor

Active

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

BEJO ZADEN

3 records

Climber

Active

Allium porrum L. · Leek

BEJO ZADEN

4 records

Carleta

Active

Cichorium endivia L. · Endive

Enza Zaden Beheer B.V.

5 records

Carnivor

Active

Cucurbita maxima Duchesne x Cucurbita moschata Duchesne

Syngenta Seeds, NL

3 records

Brutus

Active

Cucumis melo L. · Melon

Syngenta Seeds BV (NL)

4 records

Bilbao

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Saaten Union Recherche (FR)

4 records

Basinova

Protection expired

Ocimum basilicum L. · Basil

SAATZUCHT QUEDLINBURG GMBH

3 records

Amigo

Active

Cucumis sativus L. · Cucumber

ALILUEV ANATOLIJ VLADIMIROVICh / ShTAJNERT TAT'YaNA VLADIMIROVNA / AVDEENKO LYuDMILA MIHAJLOVNA / POLDNIKOVA VALENTINA YuR'EVNA / TEPLOVA NADEZhDA SERGEEVNA

4 records

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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.