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.

Reuno

Active

Malus domestica (Suckow) Borkh. · Apple

Uno Kivistik 100%

4 records

Rorkal

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Institut national de recherche pour l'agriculture, l'aliment (FR)/Agri Obtentions SA (FR)

3 records

Requiem

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Institut national de recherche pour l'agriculture, l'aliment (FR)/Agri Obtentions SA (FR)

2 records

Resovia

Active

Juglans regia L. · Persian walnut

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

3 records

Rinot

Active

Vitis L. · Grapevine

Prof. Ing. Vilém Kraus, CSc. (CZ)/Doc. Ing. Miloš Michlovský, CSc. (CZ)/Lubomír Glos (CZ)/Vlastimil Peřina (CZ)

3 records

Red Sylred

Active

Prunus armeniaca L. · Apricot

Benoit Escande (FR)

2 records

Red Gold

Active

Malus domestica (Suckow) Borkh. · Apple

SHELL F.A. (US)

2 records

Rambler

Active

Medicago sativa L. · Alfalfa

Agriculture Canada (CA)

2 records

Red Beauty

Active

Hydrangea L. · Hydrangea

NIELS ARTS

2 records

Rapa

Active

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

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

2 records

Red Toga

Active

Allium fistulosum L. · Welsh onion

Enza Zaden Beheer B.V.

3 records

Rakopan

Terminated

x Festulolium Aschers. et Graebn. · Festulolium

Hodowla Roślin Szelejewo sp. z o.o. \Instytut Genetyki Roślin Polskiej Akademii Nauk

3 records

Red Noble

Protection expired

Prunus domestica L. · European plum

Norman Glen Bradford (US)/Lowell Glen Bradford (US)

2 records

Rafzas

Active

Pyrus communis L. · European pear

Peter Hauenstein

6 records

Radziejowa

Active

Rubus idaeus L. · Red raspberry

Instytut Ogrodnictwa - Państwowy Instytut Badawczy (The National Institute of Horticultural Research)

6 records

Raco

Protection expired

Hydrangea L. · Hydrangea

PREISIG WALTER

2 records

Renora

Terminated

Malus Mill. · Apple

Fischer, C. / Murawski, H.

2 records

PURPLEPAC

Active

Prunus amygdalus x Prunus persica

Agromillora Catalana S.A.U.

2 records

Renkloda Althana

Active

Prunus domestica L. · European plum

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

4 records

Quick Fire

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Information regarding the breeder received in the contribution to CPVO :Bulk R. & M.

2 records

Quintal d'Alsace

Active

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

Domaine Public (FR)

2 records

Pyrodwarf

Active

Pyrus L. · Pear

HELMUTH JACOB_

2 records

Ravat 6

Active

Vitis L. · Grapevine

INCONNU (FR)

2 records

Red Rich

Protection expired

Fragaria L. · Strawberry

Hagerstrom, Marion

2 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.