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.

Melanie

Terminated

Lilium L. · Lily

PEACOCK B.V., IMANSE LELIEVEREDELING B.V.

1 record

Meisabeyla

Terminated

Rosa L. · Rose

Alain Antoine Meilland

1 record

MINBLACK2

Active

Physocarpus opulifolius (L.) Maxim. · Ninebark

Hortival Diffusion S.A.S.

1 record

MILCHOC

Terminated

Carex comans Berggr.

Kelly Andrew

1 record

Nori

Terminated

Gladiolus L. · Gladiolus

Holtmaat Bloembollen B.V.

1 record

Noranda

Terminated

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

1 record

Noastwo

Active

Astrantia major L. · Masterwort

Marco van Noort Breeding B.V.

1 record

Miss P

Active

Buddleja davidii Franch. · Butterfly bush

Dennis J. Werner, Kultaran Chohan

1 record

Meikiskou

Terminated

Rosa L. · Rose

Alain Antoine Meilland

1 record

Meihadrall

Terminated

Rosa L. · Rose

Alain Antoine Meilland

1 record

Mega Caramel

Active

Heuchera L. · Coral Flower

Sandrine Delabroye

1 record

MD 002

Application submitted

Lophomyrtus xralphii (Hook. f.) Burret

Francis Doherty Malachy

1 record

Meimarmoto

Terminated

Rosa L. · Rose

Alain Antoine Meilland

1 record

P16064

Withdrawn

Coreopsis rosea Nutt. · Pink coreopsis

Uriseed Institute

1 record

OVPEARLS18

Application submitted

Echeveria pulidonis E. Walther · Echeveria pulidonis

Ovata B.V.

1 record

Medusa

Active

Allium senescens L. subsp. senescens x A. tanguticum Regel

Hans A. Hansen

1 record

Orange You Awesome

Withdrawn

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

Hans A. Hansen

1 record

MAUVAL1

Withdrawn

Acer platanoides L. · Norway maple

Comb. Mauritz B.V.

1 record

Orange Passion

Terminated

Echinacea Moench. · Coneflower

TAKII EUROPE B V

1 record

Marketta

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Tarja Hietaranta

1 record

New Dimension

Withdrawn

Geranium L. · Crane's Bill

Eternal Plant Boijl B.V.

1 record

Michael

Withdrawn

Pelargonium L'Hér. ex Ait. · Geranium

KAPAC JAY

1 record

Mardi Gras

Withdrawn

Abelia x grandiflora Rehder · Glossy abelia

Rick Crowder

1 record

OPSTAL 60

Withdrawn

Pieris japonica (Thunb.) D. Don ex G. Don · Japanese pieris

Ron van Opstal Holding B.V.

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.