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.

Tintoreto

Active

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

MORAVOSEED

3 records

Sweetprim

Active

Prunus persica (L.) Batsch · Peach

Maillard Arsene|Elne, FR / Maillard Laurence|Elne, FR

4 records

Soraya

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Kwekerij Sidaco B.V.

3 records

Sfera

Active

Triticum aestivum L. · Bread wheat

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

4 records

SAUBAN

Active

Rosa L. · Rose

Bernard SAUVAGEOT (FR)

3 records

Saturn

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Information regarding the breeder received in the contribution to CPVO :Rampp

3 records

Rostockie

Active

Secale cereale L. · Rye

Hodowla Roslin Smolice Sp.z o.o Grupa IHAR

4 records

Rosita

Active

Calluna vulgaris (L.) Hull · Common heather

Kurt Kramer

3 records

Roma

Protection expired

Astrantia L. · Masterwort

AAD Geerlings

3 records

Rojo Brillante

Active

Diospyros kaki L. f. · Persimmon

nepoznat

3 records

RIE 04

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Ryoji Irie

3 records

ROZKIShNA

Active

Triticum aestivum L. · Bread wheat

Riabchuk Nataliia Ivanivna, Usova Zoia Vasylivna, Didenko Svitlana IUriivna, Panchenko Ivana Arkhopovych, Zviahin Andrii Fedorovych, Hlukhova Nataliia Anatoliivna, Hridin Mykola Mykolaiovych, Yel`nikov Mykola Ivanovych,

4 records

Rossignol

Active

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

MORAVOSEED

3 records

RIE 03

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Ryoji Irie

3 records

Rednex

Active

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

MORAVOSEED

3 records

Ramona

Active

Daboecia cantabrica (Huds.) K. Koch · Connemara heather

Johannes van Leuven

3 records

Prince Promise

Active

Lilium L. · Lily

TAKII & CO LTD

3 records

Purple Sensation

Active

Hyacinthus orientalis L. · Common hyacinth

L.W.A. van der Poel

3 records

POULbrido

Terminated

Rosa L. · Rose

Poulsen Roser A/S

3 records

Pagane

Active

Hordeum vulgare L. · Barley

G. Mihova, S. Tsvetkov, I. Iliev, T. Petrova, V. Ivanova, S. Doneva, D. Yordanova

4 records

Petrus

Active

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

Syngenta Seeds B.V.

3 records

Orange Sunrise

Active

Berberis thunbergii DC. · Japanese barberry

Gospodarstwo Szkółkarskie Lucjan i Grzegorz Kurowscy

3 records

ORACHARPAM

Active

Rosa L. · Rose

ROSERAIES GAUJARD

3 records

Ostfriesische Palme

Active

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

DRESCHFLEGEL E V

3 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.