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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.

kolmaros

Withdrawn

Eryngium planum L. · Blue eryngo

Kolster Holding B.V.

1 record

Kolmaref

Terminated

Hypericum x inodorum Mill. · Tall tutsan

Floribreed V.O.F.

1 record

Liber Edge

Terminated

Lilium L. · Lily

Van Zanten Flowerbulbs B.V

1 record

Kolmaprince

Active

Hypericum x inodorum Mill. · Tall tutsan

Floribreed V.O.F.

1 record

Lamia

Terminated

Chrysanthemum L. · Chrysanthemum

Andreas Niederländer

1 record

Laksmi

Terminated

Lilium L. · Lily

De Jong Beheer B.V.

1 record

LABZ0001

Terminated

Lavandula stoechas L. · French lavender

Syngenta Crop Protection AG

1 record

LITWO

Terminated

Cercis canadensis L. · Eastern redbud

PAUL BUDDY EWING WOODY

1 record

LC NO13

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Alex F. Schoemaker

1 record

Intercombig

Terminated

Rosa L. · Rose

Interplant Roses B.V

1 record

Linn

Active

Tilia cordata Mill. · Small-leaved lime

Rune Bengtsson^^^E-planta ekonomisk förening

1 record

Katja

Terminated

Phlox paniculata L. · Garden phlox

Geerlings-Meyer

1 record

Indian Summer

Terminated

Zantedeschia Spreng. · Arum-lily

Zantedeschiagroep Trendflor V.O.F.

1 record

Koi Pursuit

Withdrawn

Gladiolus L. · Gladiolus

For Ever Bulbs B.V.

2 records

Jumbo

Terminated

Physalis alkekengi L. · Chinese lantern

Handelskwekerij Verheijen V.O.F

1 record

JS Humble

Withdrawn

Eutrochium maculatum (L.) E. E. Lamont var. maculatum

Spruyt Select CommV

1 record

Jelly Beans

Withdrawn

Abelia x grandiflora Rehder · Glossy abelia

Valérie Pouillart

1 record

JEFRAM

Withdrawn

Physocarpus opulifolius (L.) Maxim. · Ninebark

Wilbert Ronald

1 record

Lepligo

Application submitted

Ligustrum ovalifolium Hassk.

José Leprêtre

1 record

KORCHARBLU

Active

Rosa L. · Rose

WILHELM-ALEXANDER KORDES

1 record

Lemon Dream

Terminated

Paeonia L. · Peony

ANDERSON ROGER F.

1 record

Korbersoma

Terminated

Rosa L. · Rose

Wilhelm Kordes,Tim-Hermann Kordes,Margarita Kordes

1 record

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