Variety traits
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.
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.
Zea mays L. · Maize
Olkhovyk Maksym Stanislavovych, Riabchenko Eduard Mykolaiovych, Abelmasov Oleksii Viktorovych, Bondar Tetiana Mykolaivna, Plotka Vitalii Vitaliiovych, Nehoda Tetiana Volodymyrivna, Haidash Oleksandr Leonidovych, Fedko Mykola Mykolaiovych, Cherchel Vladysl
Zea mays L. · Maize
Shevchenko Serhii Oleksandrvovych, Kravchenko Viktor Mykolaiovych, Halechko Ivan Dmytrovych, Borysov Viktor Mykolaiovych,
Zea mays L. · Maize
Zea mays L. · Maize
Bernats`kyi Maksym Mykhailovych, Bondar` Tetiana Mykolaivna, Kupar Ivan Mykhailovych, Bodenko Natalia Anatoliivna, Nehoda Tetiana Volodymyrivna, Marochko Valentyna Anatoliivna, Chernkov Anatolii Vasyl`ovych, Fed`ko Mykola Mykolaiovych, Cherchel` Vladyslav
Zea mays L. · Maize
Halechko Ivan Dmytrovych, Borysov Vikttor Mykolaiovych, Fed`ko Mykola Mykolaiovych, Cherchel` Vladyslav IUriiovych, Dziubets`kyi Borys Volodymyrovych,
Zea mays L. · Maize
Kravchenko Viktor Mykolaiovych, Borysov Viktor Mykolaiovych, Fed`ko Mykola Mykolaiovych, Cherchel` Vladyslav IUriiovych, Dziubets`kyi Borys Volodymyrovych,
Zea mays L. · Maize
Cheban Denys Valeriiovych, Paziuk Nataliia Vasylivna, Kravchenko Viktor Mykolaiovych, Halechko Ivan Dmytrovych, Borysov Viktor Mykolaiovych,
Zea mays L. · Maize
Borysov, Viktor Halechko, Ivan KRAVChENKO, Viktor
Zea mays L. · Maize
Borysov Viktor Mykolaiovych
Zea mays L. · Maize
Halechko Ivan Dmytrovych, Kravchenko Viktor Mykolaiovych, Kostiuchenko Viktor Ivanovych, Borysov Viktor Mykolaiovych,
Zea mays L. · Maize
Kravchenko Viktor Mykolaiovych, Borysov Viktor Mykolaiovych, Fed`ko Mykola Mykolaiovych, Cherchel` Vladyslav IUriiovych, Dziubets`kyi Borys Volodymyrovych,
Zea mays L. · Maize
Kravchenko Viktor Mykolaiovych, Fedko Mykola Mykolaiovych, Borysov Viktor Mykolaiovych, Cherchel Vladyslav IUriiovych, Dziubetskyi Borys Volodymyrovych,
Zea mays L. · Maize
Cherchel, Vladyslav Iuriiovych Dziubetskyi, Borys Volodymyrovych Bodenko, Natalia Anatoliivna Bondar, Tetiana Mykolaivna
Zea mays L. · Maize
Ilchenko, Larysa Anatoliivna Dziubetskyi, Borys Volodymyrovych Bodenko, Natalia Anatoliivna Cherchel, Vladyslav IUriiovych
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Gautier Semences SAS (FR)
Brassica rapa L. var. rapa (L.) Thell. · Turnip
Domaine Public (FR)
Zea mays L. · Maize
Cheban Denys Valeriiovych, Shevchenko Serhii Oleksandrovych, Kravchenko Viktor Mykolaiovych, Halechko Ivan Dmytrovych, Borysov Viktor Mykolaiovych,
Zea mays L. · Maize
KRAVCHENKO VIKTOR MYKOLAIOVYCH, BORYSOV VIKTOR MYKOLAIOVYCH
Zea mays L. · Maize
Cherchel Vladyslav IUriiovych, Nehoda Tetiana Volodymyrovych, Voskoboinyk Oleksandr Vasyl`ovych, Antoniuk Serhii Petrovych, Dziubetskyi Borys Volodymyrovych,
Zea mays L. · Maize
Maschenko IUrii Vasyl`ovych, Semeniaka Ihor Mykolaiovych, Satarova Tetiana Mykolaivna, Korobko IUliia Anatoliivna, Bondar` Tetiana Mykolaivna, Marochko, Oliz`ko Oleksii Petrovych, Fed`ko Mykola Mykolaiovych, Cherchel` Vladyslav IUriiovych, Dziubets`kyi Bo
Zea mays L. · Maize
MONSANTO TECHNOLOGY
Zea mays L. · Maize
Nehoda Tetiana Volodymyrivna, Marochko Valentyna Anatoliivna, Bodenko Natalia Anatoliivna, Fed`ko Mykola Mykolaiovych, Cherchel` Vladyslav IUriiovych, Dziubets`kyi Borys Volodymyrovych,
Beta vulgaris Garden Beet Group · Garden beet
Domaine Public (FR)
Brassica oleracea L. (Kohlrabi Group) · Kohlrabi
ISP INTERNATIONAL SEEDS PROCESSING