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.

KAMI

Terminated

Carum carvi L. · Caraway

PRODANA SEED A/S - DLF SEEDS A/S

2 records

Indus

Active

Lilium L. · Lily

Mak Breeding Rights B.V.

1 record

Jaan

Terminated

Clematis viticella L. · Italian leather flower

Uno Kivistik, Aili Kivistik

1 record

Kapdar1

Active

Thuja occidentalis L. · Northern white-cedar

Dariusz Kapias

1 record

Juuli

Active

Clematis integrifolia L.

Uno Kivistik, Aili Kivistik

1 record

Just Lucky

Application submitted

Clematis L. · Clematis

Szczepan Marczyński

1 record

INTR

Terminated

Juglans regia L. · Persian walnut

Ponomarenko Oleksandr Kostiantynovych

2 records

Italiaanse Kwets

Active

Prunus domestica L. · European plum

Information not available - Contact NL authorities

1 record

Inka

Withdrawn

Brassica oleracea L. (Marrowstem Kale Group) · Marrow-stem kale

FREUDENBERGER| Feldsaaten Freudenberger G.m.b.H. & Co. Kommanditgesellschaft

1 record

Jork 9 ISK

Withdrawn

Malus Mill. · Apple

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

2 records

Indicus

Withdrawn

Lolium perenne L. · Perennial ryegrass

INNOSEEDS| Innoseeds B.V.

1 record

Julia

Active

Muscari · Grape hyacinth

Boltha B.V.

1 record

INTORANSTRIP

Terminated

Rosa L. · Rose

INTERPLANT BV (NL)

1 record

Huvi

Active

Clematis L. · Clematis

Uno Kivistik, Aili Kivistik

1 record

Jori

Terminated

Poa pratensis L. · Kentucky bluegrass

BAYERISCHE PFLANZEN| Bayerische Pflanzenzucht- gesellschaft eG & Co KG

2 records

Jaunė

Protection expired

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas

1 record

Jessica

Terminated

Brassica napus L. · Rapeseed

SEMUNDO SAATZUCHT GMBH

1 record

Ice Queen

Active

Crocus L. · Crocus

Testcentrum voor Siergewassen B.V.

1 record

Hostynets

Terminated

Ribes uva-crispa L. · Gooseberry

Lushpihan Ol`ha Petrivna

4 records

ILZE

Application submitted

Malus domestica (Suckow) Borkh. · Apple

APP Darzkopibas instituts

1 record

Ice Cream Lemon

Active

Tulipa L. · Tulip

Vertuco B.V.

1 record

JACQUES PONCHET

Withdrawn

Cupressus L. · Cypress

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

1 record

Hinnonmäki Grön

Active

Ribes uva-crispa L. · Gooseberry

Information not available - Contact NL authorities

1 record

Horodyschens'ke

Terminated

Malus domestica (Suckow) Borkh. · Apple

Homeniuk Svitlana Viktorivna, Chupryniuk Viktor IAkovych,

2 records

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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.