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.

Devola

Active

Lilium L. · Lily

Mak Breeding Rights B.V.

1 record

Dobrynia

Active

Vitis vinifera L. · Common grape vine

Herus Liudmyla Vasylivna, Bankovska Mariia Hryhorivna, Dada Mariia Dmytrivna, Chebanenko IEvheniia Pavlivna, Pis`menaia Larysa Mykhailivna, Meleshko Larysa Fedorivna, Tulaieva Maiia Ivanivna, Dokuchaieva IEvheniia Mykolaivna,

2 records

Dnistrianka odeska

Terminated

Triticum aestivum L. · Bread wheat

Kirchuk IEvhenii Illich, Ihnatovskyi Oleksandr Oleksandrovych, Babaiants Olha Vadymivna, Lytvynenko Raisa Ivanivna, Alieksieienko IEvhenii Viktorovych, Lytvynenko Mykola Antonovych,

2 records

DUCPGF

Active

Rosa L. · Rose

Ducher Fabien (FR)

1 record

Dior

Active

Tulipa L. · Tulip

Remarkable C.V.

1 record

DOVGA

Active

Vitis vinifera L. · Common grape vine

Gunvaldis Ilgvars Vesmins

2 records

Double Touch

Active

Tulipa L. · Tulip

Vertuco B.V.

1 record

Darwin's Snow Sprite

Protection expired

Astilbe simplicifolia Makino · Star astilbe

Veen

1 record

Dorcey

Active

Lilium L. · Lily

Hoogland & Van Veen Lelie B.V.

1 record

DANICA

Terminated

Thuja L. · Arborvitae

PLANTESKOLEEJER ARNE R. JENSEN

1 record

Dalma

Terminated

Gerbera jamesonii Bolus ex Hook. f. · Barberton daisy

Eveleens, Jan L.

1 record

Czernecza

Withdrawn

Ribes nigrum L. · Blackcurrant

Institut Sadiwnictwa Ukrainska Akademija Agrarnich Nauk Volodymyr Kopan

1 record

Delsauvli

Application submitted

Rosa L. · Rose

Societe Nouvelle des Pepinieres & Roseraies Georges DELBARD (FR)

1 record

De Gennevilliers

Terminated

Allium porrum L. · Leek

Domaine Public (FR)

1 record

Darwiorange

Withdrawn

Tulipa L. · Tulip

Braaksma/Bastiaanse/Stienstra B.V./Jong B.V.

1 record

Dark Soul

Active

Tulipa L. · Tulip

G. Buis Bloembollen B.V.

1 record

Danique

Active

Tulipa L. · Tulip

Testcentrum voor Siergewassen B.V.

1 record

Cytrynek

Terminated

Viola x wittrockiana Gams · Garden pansy

Warszawskie Przedsiębiorstwo Hodowli Roślin Ogrodniczych

1 record

Deltir

Active

Ribes L. · Currants

Pepinieres et Roseraies Georges Delbard| FR

1 record

De norvège

Terminated

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

Domaine Public (FR)

1 record

Dendrofarma Gold

Active

Picea glauca (Moench) Voss · White spruce

Michal Kaluzinski

1 record

DELCREJA

Active

Rosa L. · Rose

Societe Nouvelle des Pepinieres & Roseraies Georges DELBARD (FR)

1 record

Dark Secret

Withdrawn

Lilium L. · Lily

Mak Breeding Rights B.V.

2 records

Darrow SGGW

Terminated

Vaccinium corymbosum L. · Highbush blueberry

Szkola Glowna Gospodarstwa Wiejskiego

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.