Variety traits

Winter hardiness

Winter hardiness is a complex indicator of a variety's ability to remain viable throughout the winter and early spring periods, including resistance to frost and other environmental stress factors.

Mentioned in descriptions 27 261 varieties reference book.

Winter hardiness is a complex plant characteristic that includes resistance to freezing, smothering, waterlogging, frost heaving, and winter desiccation. Unlike frost resistance, which is limited to tolerance of low temperatures, winter hardiness takes into account the entire spectrum of adverse effects that lead to plant death or damage during the cold period.

The winter hardiness of a variety is evaluated using methods of field assessment of crop conditions after winter, employing scoring scales, as well as laboratory studies. The latter include direct freezing of plant monoliths, biochemical analyses of sugar accumulation, verification of the viability of the tillering node, and the use of genetic markers to determine resistance.

The level of winter hardiness depends on the genetic potential of the variety, the plant's ability to harden, agronomic cultivation practices, and the microclimate characteristics of a specific site. When choosing a variety, one should focus on regionalized forms, bearing in mind that the resistance indicator is relative and requires comparison with local standards and growing conditions.

Sources10

Breakdown by crop

Winter Hardiness of Roses 555 Winter hardiness of common wheat 220 Winter hardiness of apple trees 188 Winter Hardiness — Hydrangea macrophylla 187 Pear Winter Hardiness 123 Winter hardiness — perennial ryegrass 120 Winter Hardiness of Lily 91 Winter hardiness of winter rapeseed 81 Peach winter hardiness 71 Plum Winter Hardiness 65 Winter Hardiness of Clematis 61 Grapevine Winter Hardiness 56 Winter hardiness of winter barley 56 Winter hardiness — garden strawberry 52 Winter hardiness of sweet cherry 48 Tulip winter hardiness 42 Heuchera winter hardiness 40 Winter Hardiness of Alfalfa 39 Chrysanthemum winter hardiness 39 Winter hardiness of triticale 36 Winter Hardiness of Apple 36 Winter hardiness of Hydrangea serrata 36 Grapevine Winter Hardiness 35 Winter hardiness of apricot 35

Found in these crops

Rose 1 062 Apple 843 Bread wheat 657 Lily 410 European pear 348 Bigleaf hydrangea 315 Peach 264 Rapeseed 258 European plum 245 Grapevine 229 Perennial ryegrass 224 Sweet cherry 223

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.

Karlapärl

Active

Malus domestica (Suckow) Borkh. · Apple

Uno Kivistik

4 records

Karmel

Active

Prunus avium (L.) L. · Sweet cherry

Kalju Kask 100%

4 records

Kadri

Active

Prunus domestica L. · European plum

Estonian University of Life Sciences Institute of Agricultural and Environmental Sciences Polli Horticultural Research Centre

4 records

Jupiter

Active

Brassica rapa L. · Turnip rape

P.H.PETERSEN SAATZUCHT LUNDSGAARD

2 records

Julius

Active

Prunus domestica L. · European plum

Julius Eslon 75%, Arthur Jaama 25%

4 records

Jenkka

Active

Rubus idaeus L. · Red raspberry

Maatalouden tutkimuskeskus (MTTK) (later: Maa- ja elintarviketaouden tutkimuskeskus (MTT)/ Present Luonnonvarakeskus (Luke))

2 records

Jonnys Gigant

Terminated

Fargesia murielae (Gamble) T.P.Yi · Umbrella bamboo

Helmerich Helmers

2 records

Jonkheer Van Tets

Active

Ribes L. · Currants

2 records

Itarzi

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

DLF Trifolium A-S, DK

2 records

Jõgeva 118

Terminated

Medicago sativa L. nothosubsp. varia (Martyn) Arcang. · Bastard Medic

Heiti Kotkas 75%, Jaan Mets 25%

2 records

Katemina

Active

Hordeum vulgare L. · Barley

Dr. Karl-Josef Müller

3 records

Karamba

Active

Malus domestica (Suckow) Borkh. · Apple

Kalju Kask 100%

4 records

Inese

Active

Malus domestica (Suckow) Borkh. · Apple

Rudolfs Dumbravs

4 records

Kadi

Active

Pyrus communis L. · European pear

Kalju Kask 100%

4 records

Juurlu

Active

Medicago sativa L. nothosubsp. varia (Martyn) Arcang. · Bastard Medic

Mart Jaagus 70%, Sirje Tamm 20%, Ants Bender 10%

2 records

Kalipso

Active

Prunus domestica L. · European plum

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

4 records

ISFROPLAT 3

Active

Prunus persica (L.) Batsch · Peach

3 records

Jotab 02

Active

Taxus baccata L. · European yew

Josa Selecties BV

2 records

Imperial Wedding

Terminated

Lilium L. · Lily

Pieter Cornelis Schenk

2 records

Inovalaur

Active

Hydrangea L. · Hydrangea

Information regarding the breeder received in the contribution to CPVO :Arène L., Cadic A., Davasse J.P.

2 records

Inka

Active

Prunus persica (L.) Batsch · Peach

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

3 records

Hurt

Terminated

Triticum aestivum L. · Bread wheat

Bosakovska Nataliia IUriivna, Bredins`ka Nadiia Stepanivna, Babaiants Lazar Tihranovych, Nakonechnyi Mykola IUriiovych, Narhan Tetiana Pavlivna, Fedchenko Volodymyr Pavlovych, Yeryniak Mykola Ivanovych, Lyfenko Savelii Pylypovych,

4 records

Hummi Gento

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

2 records

Hot Love

Active

Clematis L. · Clematis

Szczepan Marczyński

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.