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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

Found in these crops

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.

Patriot ISK

Withdrawn

Vaccinium corymbosum L. · Highbush blueberry

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

PL
4 records

Pepe

Active

Erica gracilis J. C. Wendl. · Slender heath

Helmut und Thomas Hiedl GbR

DE
1 record

Orfeo PNE

Terminated

Dahlia Cav. · Dahlia

CNOS Przedsiebiorstwo Nasiennictwa Ogrodniczego sp. z o.o.

PL
1 record

P 2

Terminated

Malus Mill. · Apple

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

PL
1 record

Fritillaria L. · Fritillary

V.O.F. de Keizerskroon

NL
1 record

Ostara ISK

Withdrawn

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

PL
2 records

P 14

Protection expired

Malus domestica (Suckow) Borkh. · Apple

Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas

LT
1 record

Orka

Withdrawn

Festuca pratensis Huds. · Meadow fescue

Instytut Hodowli i Aklimatyzacji Roslin Panstwowy Instytut Badawczy

PL
1 record

Oriika

Terminated

Triticum aestivum L. · Bread wheat

Skryplov Volodymyr Oleksandrovych, Oksom Volodymyr Polikarpovych, Morhun Bohdan Volodymyrovych, Bratuschak Serhii Petrovych, Artemchuk Iryna Petrivna, Morhun Volodymyr Vasylovych,

UA
2 records

Otrada

Active

Prunus avium (L.) L. · Sweet cherry

Kischak Olena Anatoliivna, Yarushnykov Volodymyr Volodymyrovych, Taranenko Liliia Ivanivna,

UA
2 records

PARC DU PILAT

Withdrawn

Rosa L. · Rose

Dominique CROIX-RANCHON & Jacques RANCHON (FR)

FR
1 record

Old Gold

Terminated

Juniperus x pfitzeriana (Späth) P. A. Schmidt · Pfitzer juniper

Bunyn Maksym Viktorovych

UA
1 record

Orange Reagan

Terminated

Chrysanthemum x morifolium Ramat. · Florist's daisy

JAGT| M.R.H. van der Jagt

DE
1 record

Orkan

Terminated

Allium sativum L. · Garlic

Krakowska Hodowla i Nasiennictwo Ogrodnicze POLAN sp. z o.o.

PL
1 record

ORAKORSAR

Terminated

Rosa L. · Rose

GAEC ORARD (FR)

FR
1 record

Triticum aestivum L. · Bread wheat

Husenkova Olesia Volodymyrivna, Kotelevs`kyi IUrii Oleksandrovych, Batashova Mariia IEvhenivna, Tyshcenko Volodymyr Mykolaiovych,

UA
2 records

Pashavy

Withdrawn

Lolium perenne L. · Perennial ryegrass

Flor`ianovych Mykhailo Oleksiiovych

UA
1 record

ORFUNA

Terminated

Rosa L. · Rose

GAEC ORARD (FR)

FR
1 record

Paryżanka ISK

Terminated

Pyrus communis L. · European pear

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

PL
1 record

Prunus armeniaca L. · Apricot

Chupryna Lesia Mykhailivna, Shaitan Ivan Myronovych,

UA
1 record

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