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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.

Sylvana

Terminated

Gerbera L. · Gerbera

FLORIST HOLLAND B.V.

1 record

TNECHCMY

Active

Echinacea purpurea x Echinacea tennesseensis

HARINI KORLIPARA

1 record

TAN97097

Terminated

Rosa L. · Rose

Hans-Juergen Evers

1 record

Star of Love

Active

Helleborus L. · Christmas Rose

Jacobus R. de Jong

1 record

TK02

Withdrawn

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Yasuhiro Takahashi

1 record

TAN12662

Active

Rosa L. · Rose

CHRISTIAN EVERS

1 record

Svenskaja

Terminated

Triticum monococcum L. · Einkorn wheat

Gesellschaft für goetheanistische Forschung e.V.

1 record

TAN00628

Terminated

Rosa L. · Rose

Hans-Juergen Evers

1 record

Spring Fling

Terminated

Geranium x oxonianum Yeo · Druce's crane's-bill

B. Brown

1 record

The Juggler

Terminated

Penstemon Schmidel. · Beard Tongue

Hazel Evans

1 record

Sheila

Withdrawn

Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea

Kwekerij Sidaco B.V.

1 record

Temptation Star

Active

Astrantia major L. · Masterwort

Jacobus R. de Jong

1 record

Swiss Red

Active

Prunus armeniaca L. · Apricot

Christian de Régibus

1 record

SH 1914

Withdrawn

Saxifraga cortusifolia Siebold & Zucc.

Josef Heuger

1 record

SPENESS

Terminated

Rosa L. · Rose

Spek Rose Breeding International B.V.

1 record

Spekjam

Active

Rosa L. · Rose

Spek Rose Breeding International B.V.

1 record

Tantenom

Terminated

Rosa L. · Rose

Rosen Tantau KG

1 record

Sofia

Active

Rubus arcticus L. · Arctic raspberry

Sveriges Lantbruksuniversitet SLU Öjebyn Forskningsstation

1 record

Sunny Crown

Terminated

Lilium L. · Lily

De Jong Beheer B.V.

1 record

Snowwhite

Withdrawn

Hydrangea paniculata Siebold · Panicled hydrangea

Alex Schoemaker

1 record

Takalan Herkku

Application submitted

Rubus idaeus L. · Red raspberry

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

1 record

Taipei Silk

Terminated

Tricyrtis formosana Baker

DARRELL R.PROBST

1 record

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