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.

Tritana

Active

Poa trivialis L. · Rough bluegrass

KWS SAAT SE & CO.KGAA

6 records

Taniripsa

Active

Rosa L. · Rose

Rosen-Tantau Mathias Tantau Nachfolger

5 records

Tanaraelc

Active

Rosa L. · Rose

HANS JURGEN EVERS (T)

5 records

TAN96239

Active

Rosa L. · Rose

Hans-Juergen Evers

5 records

September Yummy

Active

Prunus salicina Lindl. · Japanese plum

Lowell Glen Bradford (US)

7 records

Santiago

Active

Hydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven

Jean-Pierre Challet

5 records

Sabre

Active

Poa trivialis L. · Rough bluegrass

INTERNATIONAL SEEDS INC

6 records

Retu

Active

Festuca arundinacea Schreb. · Tall fescue

Boreal Plant Breeding Ltd, FIN-31600 Jokioinen

6 records

Redyummy

Active

Prunus salicina Lindl. · Japanese plum

Lowell Glen Bradford (US)

8 records

Renhy

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Renault, Eric / Renault, Jean / Renault, Thierry

5 records

Prudom

Active

Prunus domestica L. · European plum

OBSTBAUMSCHULE SCHREIBER, AT

7 records

POULsabel

Application submitted

Rosa L. · Rose

Poulsen Roser AS, DK - 3480 Fredensborg

6 records

Puritan

Active

Agrostis capillaris L. · Common bent

DLF SEEDS A/S

5 records

Poulduf

Active

Rosa L. · Rose

Poulsen Roser A/S

5 records

POULbut

Active

Rosa L. · Rose

Poulsen Roser A/S

5 records

Polares

Active

Ribes nigrum L. · Blackcurrant

Research Institute of Horticulture (Instytut Ogrodnictwa) / Research Institute of Horticulture (Instytut Ogrodnictwa)

9 records

Poulmona

Application submitted

Rosa L. · Rose

Poulsen Roser AS, DK - 3480 Fredensborg

5 records

Oslava

Active

Medicago sativa L. · Alfalfa

AGROGEN, spol. s r.o. (CZ)

6 records

Papirovka

Active

Malus domestica (Suckow) Borkh. · Apple

PRIBALTIKA

7 records

Ouachita

Active

Rubus L. subg. Rubus · Blackberry

University of Arkansas, USA

9 records

Nor

Active

Agrostis capillaris L. · Common bent

Landbruks- og matdepartementet, N - 0030 Oslo

6 records

Norlea

Protection expired

Lolium perenne L. · Perennial ryegrass

Oseco Inc., Bramton, Ontario, L6V 1A1

6 records

NCHA1

Active

Hydrangea arborescens L. · Smooth hydrangea

Thomas G. Ranney

5 records

Nymph

Active

Lilium L. · Lily

World Breeding B.V

5 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.