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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.

KLEDP24523

Application submitted

Dianthus caryophyllus L. · Carnation

MAIKE BOXRIKER

2 records

Kudos Silver Blue

Active

Agastache Clayt. ex Gronov. · Giant hyssop

Janet N. Egger

2 records

Kolmaginno

Active

Hypericum x inodorum Mill. · Tall tutsan

Floribreed V.O.F.

2 records

Kolmade

Active

Rosa L. · Rose

Kolster Beheer B.V.

2 records

Kokonoe

Active

Clematis L. · Clematis

Koichiro Ochiai

2 records

Marquette

Active

Vitis vinifera L. · Common grape vine

James J. Luby^^^Peter Hemstad

2 records

Loiste

Active

Rosa L. · Rose

Matti Kangaspunta, Peter Joy, Pirkko Kahila

2 records

LK05

Active

Actaea pachypoda Elliott · baneberry

Mt. Cuba Center Inc.

2 records

Luna Roja

Active

Heliopsis helianthoides (L.) Sweet var. scabra (Dunal) Fernald · Rough oxeye

Verschoor Janus

2 records

Little Prince

Active

Hibiscus coccineus x Hibiscus moscheutos L.

Zwetzig Gretchen

3 records

Little Magnus

Active

Echinacea purpurea (L.) Moench · Purple coneflower

Vester Mart|Zwaanshoek, NL

2 records

Little Lady

Active

Abelia x grandiflora Rehder · Glossy abelia

Klemens Keysers

2 records

LOWTEN

Active

Veronica L. · Speedwell

Ian J. Ashton

2 records

Land Green

Active

Ilex crenata Thunb. · Japanese holly

Landin Outon Jose Luis

2 records

LONDAZ

Active

Choisya H.B.K. · Mexican orange

Peter R. Moore

2 records

Lady Ann

Active

Paeonia L. · Peony

Christian Kooiman

2 records

LABZ0007

Active

Lavandula stoechas L. · French lavender

Syngenta Participations AG

2 records

Majestic

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Michelangelo Leis^^^Alessio Martinelli

3 records

Koraugneru

Active

Rosa L. · Rose

Wilhelm-Alexander Kordes, Tim-Hermann Kordes, John-Vincent Kordes

2 records

Koraplicam

Active

Rosa L. · Rose

Wilhelm-Alexander Kordes, Tim-Hermann Kordes, John-Vincent Kordes

2 records

LISSLITT

Active

Perovskia Karel. · Russian Sage

Liss Forest Nursery Ltd

2 records

Kudos SB

Active

Agastache Clayt. ex Gronov. · Giant hyssop

Janet N. Egger

2 records

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