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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 Cucumber 24 Tomato 24 Soybean 21 Leek 17 Cauliflower 15 Spinach 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.

SY Stimulus

Application submitted

Zea mays L. · Maize

Syngenta Crop Protection AG

IT
1 record

Sprytna

Terminated

Glycine max (L.) Merr. · Soybean

Kobyzieva Liubov Nykyforivna, Riabukha Serhii Stanislavovych, Chernyshenko Pavlo Volodymyrovych, Moshkova Olena Mykolaivna, Matushkin Viktor Oleksiiovych,

UA
2 records

Ss 506

Active

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

Krys Velby

UA
1 record

Smotrych

Active

Sorghum bicolor (L.) Moench · Sorghum

Baisa Iryna Petrivna, Zaretskyi Fedir Mykolaiovych, Kukh Mariia Vasylivna, Ul`ianchyk Volodymyr Ivanovych, Sereda Volodymyr Ivanovych, Yalanskyi Oleksandr Volodymyrovych,

UA
2 records

Skh 1006 A

Active

Helianthus annuus L. · Sunflower

Petrenkova Vira Pavlivna, Veselyi Vitalii Oleksandrovych, Kuzmyshena Nadiia Viktorivna, Syvenko Valentyna Ivanivna, Alad`ina Zoia Kyrylivna, Makliak Kateryna Mykolaivna, Kyrychenko Viktor Vasylovych,

UA
2 records

SC3050

Withdrawn

Zea mays L. · Maize

Syngenta Crop Protection AG

IT
1 record

SALANCA

Withdrawn

Cichorium endivia L. · Endive

VILMORIN, S.A.

ES
1 record

San`ka

Terminated

Solanum lycopersicum L. · Tomato

Panchev IUrii Ivanovych

UA
2 records

Rozheva mriia

Terminated

Solanum lycopersicum L. · Tomato

Kliuchko Volodymyr Petrovych

UA
2 records

Sanat

Terminated

Anethum graveolens L. · Dill

Horova Tamara Korniivna, Tkalych IUrii Vadymovych, Pozniak Oleksandr Vasyl`ovych, Chaban Lesia Vasylivna,

UA
2 records

Rosa isontina

Active

Cichorium intybus L. · Chicory

SATIVA SEEDS & SERVICES S.R.L.

IT
1 record

Rondar F1

Active

Raphanus sativus L. var. sativus · Radish

Kees Deen

UA
1 record

RIOVERDE

Withdrawn

Cucumis sativus L. · Cucumber

Seminis Vegetable Seeds

ES
1 record

RACE SALANCA

Terminated

Cichorium endivia L. · Endive

Vilmorin SA (FR)

HR
1 record

Quintal d'Auvergne

Terminated

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

Domaine Public (FR)

FR
1 record

PR39M81

Withdrawn

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

PIONEER OVERSEAS CORPORATION US

FR
1 record

Ponki

Terminated

Sorghum bicolor (L.) Moench · Sorghum

Chykaliuk Peter Bohdan

UA
2 records

Paukštės Šakarva

Protection expired

Actinidia kolomikta Maxim.

Aleksandro Stulginskio universitetas

LT
1 record

Patrice

Active

Solanum lycopersicum L. · Tomato

Bayer Holland B.V.

NL
1 record

Pamplona

Withdrawn

Zea mays L. · Maize

Rustica Prograin Genetique

AT
1 record

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