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.

Balcebfro

Terminated

Impatiens New Guinea Group · New Guinea Impatiens

SCOTT C TREES

1 record

Balsomtresgo

Terminated

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

Jianping Ren

1 record

Azure Rush

Withdrawn

Geranium L. · Crane's Bill

Jan Dirk Schuiver

1 record

Adadenoj

Active

Rosa L. · Rose

Michel Adam

1 record

Audelanro

Terminated

Aubrieta Adans. · Rock cress

Syngenta Seeds B.V.

1 record

Atomic Pink Ray

Terminated

Veronica L. · Speedwell

A. VERSCHOOR HORTICULTURE IMPORT-EXPORT B.V

1 record

Arctic Wings

Terminated

Epimedium L. · Barrenwort

ANTHONY ROBIN WHITE|SUSAN BARBARA WHITE

1 record

Arctic Flush

Terminated

Rhododendron molle (Blume) G. Don · Chinese azalea

MATTHEW MILLER

1 record

AAOPR017

Active

Agapanthus africanus (L.) Hoffmanns. · African lily

Plant Select N.V.

1 record

AP CY002

Terminated

Choisya x dewitteana Geerinck

Alan Postill

1 record

2710 Moro

Withdrawn

Citrus sinensis (L.) Osbeck · Sweet orange

Meta S.r.l.

1 record

22B30

Application submitted

Hydrangea scandens (L. f.) Ser.

Marie-France Doll

1 record

159 E

Terminated

Campanula portenschlagiana Schult. · Dalmatian bellflower

Gartneriet Thoruplund A/S

1 record

Athena

Terminated

Hibiscus rosa-sinensis L. · Chinese hibiscus

Graff Breeding A.S.

1 record

Atacama

Terminated

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

1 record

ARTBUD 1569

Active

Buddleja davidii Franch. · Butterfly bush

Norbert Artmeyer

1 record

ANNY200816

Active

Syringa meyeri C. K. Schneid. · Meyer lilac

ANDRE VAN NIJNATTEN

1 record

Ann Leys

Terminated

Aster L. · Aster

Karel Driesen

1 record

Anne's Choice

Withdrawn

Bistorta amplexicaulis (D. Don) Greene · Red bistort

Chris Ghyselen

1 record

Ares

Terminated

Chrysanthemum L. · Chrysanthemum

Andreas Niederländer

1 record

Annabelle

Terminated

Hyacinthus orientalis L. · Common hyacinth

N.A.J. BERBEE B.V.

1 record

Alvar

Active

Vaccinium L. · Bilberry

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

2 records

Amalia

Terminated

Helleborus x nigercors J. T. Wall

Thierry Van Paemel

1 record

AMGERBPINK

Terminated

Gerbera L. · Gerbera

Peter Ambrosius

1 record

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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.