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Variety traits

Frost hardiness

Frost hardiness is the genetically determined ability of a plant to withstand exposure to sub-zero temperatures without tissue damage. This indicator reflects the critical temperature threshold beyond which the plant dies.

Mentioned in descriptions 11 978 varieties reference book.

Frost hardiness represents the ability of a plant organism to resist the impact of low sub-zero temperatures. It determines the critical threshold above which plant tissues undergo irreversible damage or death. Unlike overall winter hardiness, which also accounts for damping-off and the effects of thaws, frost hardiness focuses specifically on the cellular response to cold exposure.

This trait is genetically determined; however, its expression depends on the physiological state of the plant and the dynamics of external conditions. Frost hardiness is not a constant value: it increases during the period of deep winter dormancy and gradually decreases towards spring, as the plant loses its ability to resist cold due to dehardening.

The evaluation of frost hardiness during variety testing is conducted through laboratory freezing in controlled conditions or through long-term field observations of crop survival. For variety comparison, scoring scales, percentage of survival, or the determination of minimum permissible temperatures in degrees Celsius are used. Maximum realization of the innate genetic potential for frost hardiness is ensured by optimal sowing dates and adequate phosphorus-potassium fertilization in the autumn.

Sources10

Breakdown by crop

Frost resistance of roses 263 Frost Resistance — Hydrangea macrophylla 162 Grapevine Cold Hardiness 152 Lily Frost Hardiness 106 Apple Frost Resistance 84 Grapevine Cold Hardiness 78 Clematis Frost Resistance 71 Tulip frost resistance 64 Peach frost hardiness 52 Frost resistance — soft wheat 44 Frost Hardiness of Rhododendron 36 Frost resistance of Heuchera 36 Frost resistance of common heather 30 Frost Hardiness of Zantedeschia 29 Pear frost resistance 24 Frost Hardiness of Sweet Cherry 24 Apple Frost Resistance 24 Gladiolus frost resistance 24 Cold hardiness of fig 24 Chrysanthemum Frost Resistance 21 Plum Frost Resistance 19 Apricot frost resistance 19 Frost resistance — garden strawberry 19 Blueberry frost resistance 18

Found in these crops

Grapevine 301 Rose 193 Lily 150 Common grape vine 142 Apple 119 Tulip 112 Bigleaf hydrangea 82 Clematis 66 Peach 63 Bread wheat 56 Azalea 44 Highbush blueberry 42

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.

AM2021-1

Application submitted

Miscanthus sinensis Andersson · Chinese silver grass

Artur Maj

1 record

Alcpara

Active

Parahebe catarractae (G. Forst.) W. R. B. Oliv.

Neil Alcock

2 records

ARTBUD 1580

Active

Buddleja davidii Franch. · Butterfly bush

Norbert Artmeyer

1 record

Atacama

Terminated

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

1 record

Apache

Terminated

Miscanthus sinensis Andersson · Chinese silver grass

Jerzy Foszczka

1 record

AKATA88

Active

Hibiscus coccineus x Hibiscus moscheutos L.

Yukio Kurabayashi

1 record

8R61

Application submitted

Platanus x hispanica Mill. ex Münchh. · London plane

Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)

1 record

Yuvіleina

Terminated

Vicia sativa L. · Common vetch

Rubel` Pavlo Stepanovych, Urs`ka Zoia Mykolaivna, Kolisnyk Iryna Vitaliivna,

UA
1 record

Sylach

Terminated

Coriandrum sativum L. · Coriander

Kvach Lidiia Heorhiivna, Skyba Oleksandr Volodymyrovych, Syl`chenko Valentyna Mykhailivna,

UA
4 records

Stoir

Active

Secale cereale L. · Rye

Tsyhanko Viktor Anatoliiovych, Krainiuk Valentyna Stepanivna, Parasovchenko Oleh Oleksandrovych, Derev'ianko Vira Petrivna, Khudoerko Volodymyr Ivanovych, Yehorov Dmytro Kostiantynovych,

UA
2 records

Spivanka Polis`ka

Active

Triticum aestivum L. · Bread wheat

Lytus Mykola Volodymyrovych, Hirko Oleksandr Volodymyrovych, Klymenko Iryna Ivanivna, Zaika IEvhenii Viktorovych, Tkachova Natalia Andriivna, Holyk Liubov Mykolaivna, Starychenko Vasyl Mykolaiovych,

UA
2 records

Ozerna

Active

Triticum aestivum L. · Bread wheat

Artiushenko Artem Petrovych, Artiushenko Nataliia Pavlivna, Artiushenko Petro Mykolaiovych,

UA
2 records

Obrion

Active

Helianthus annuus L. · Sunflower

Reva IAroslav Mykolaiovych

UA
2 records

Mousson

Withdrawn

Sorghum bicolor (L.) Moench · Sorghum

EURALIS GENETIQUE

IT
1 record

Grüner Schnitt

Protection expired

Beta vulgaris Leaf Beet Group · Swiss chard

HR SI
2 records

Langedijker Bewaar

Protection expired

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

HR SI
2 records

Quantum

Terminated

Brassica napus var. napus · Rapeseed

4 records

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