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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.

Bozedib023

Active

Rosa L. · Rose

Pheno Geno Rose D.O.O.

1 record

Ballet Slippers

Active

Hibiscus coccineus x Hibiscus moscheutos L.

Hans A. Hansen

1 record

BOUTI9602

Withdrawn

Rhododendron L. · Azalea

Christian de La Sablière

1 record

Balios

Terminated

Chrysanthemum L. · Chrysanthemum

Andreas Niederländer

1 record

Balalysing

Terminated

Alyssum wulfenianum Willd.

Troy Thorup

2 records

Boruistda

Active

Rosa L. · Rose

De Ruiter Intellectual Property B.V., Boot & Co. Boomkwekerijen B.V.

1 record

Back in Black

Terminated

Agapanthus L'Hér. · Lily of the Nile

P.J.H. ZONNEVELD B.V.

1 record

Balfernlym

Withdrawn

Artemisia gmelinii Weber ex Stechm.

Christa Kievit^^^Karl F. Batschke

1 record

Balevoeen

Withdrawn

Hybrids between Echinacea purpurea (L.) Moench and Echinacea paradoxa (Norton) Britton

Jianping Ren^^^Richard H. Wells

1 record

bullechi 01

Terminated

Echinacea purpurea (L.) Moench · Purple coneflower

Hartwig Bull

1 record

Ample Surprise

Terminated

Acer longipes x Acer platanoides

Petrus Cornelis de Jong

1 record

Bokrawim

Terminated

Rosa L. · Rose

De Ruiter Intellectual Property B.V.

1 record

Bokomaho

Active

Hydrangea paniculata Siebold · Panicled hydrangea

Boot & Co. Boomkwekerijen B.V.^^^Kolster Holding B.V.

1 record

Bokrijk

Application submitted

Phyllostachys kwangsiensis W. Y. Hsiung et al.

Het Domein Bokrijk V.Z.W.

1 record

Bocomastani

Application submitted

Diervilla x splendens (Carrière) G. Kirchn.

Boot & Co. Boomkwekerijen B.V.

1 record

Bocobeup

Application submitted

Viburnum nudum L. · possum haw

Boot & Co. Boomkwekerijen B.V.

1 record

Bohema Pink

Active

Geum L. · Avens

Ogrody o Zielonych Progach - Przemysław Godlewski

1 record

BOZREKA025

Withdrawn

Rosa L. · Rose

Pheno Geno Roses B.V.

1 record

Blue Explosion

Terminated

Veronica x media Schrad.

A. VERSCHOOR HORTICULTURE IMPORT-EXPORT B.V

1 record

Botex 015

Application submitted

Deutzia

Botanic Experience B.V.

1 record

Blue Ocean

Application submitted

Brunnera macrophylla (Adams) I. M. Johnst. · Siberian bugloss

Chris Ghyselen

1 record

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