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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.

Firan

Application submitted

Festuca rubra L. · Red fescue

DLF SEEDS A/S

DE
4 records

Ferris

Active

Lolium perenne L. · Perennial ryegrass

Saatzucht Steinach GmbH & Co KG

DE
5 records

Evithree

Active

Clematis L. · Clematis

RAYMOND J. EVISON^^^POULSEN ROSER INTERNATIONAL S.A.R.L.

PL
4 records

Fintona

Active

Lolium perenne L. · Perennial ryegrass

AFBI

IE
6 records

Fay

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GMBH and CO.KG

DE
8 records

Elyria

Active

Lolium perenne L. · Perennial ryegrass

DLF SEEDS A/S

NL
6 records

Lolium perenne L. · Perennial ryegrass

TURF MERCHANTS INC (TMI)

ES
4 records

Triticum aestivum L. subsp. spelta (L.) Thell. · Spelt

Saatzucht Ebnerhof Hans Gahleitner, Maria Grünbacher, Josef

AT
4 records

Diderot

Active

Triticum aestivum L. · Bread wheat

SECOBRA RECHERCHES S.A.S

FR
5 records

Donner

Active

Lolium perenne L. · Perennial ryegrass

DLF Seeds A/S, 4000 Roskilde

DE
5 records

Dundrod

Active

Lolium perenne L. · Perennial ryegrass

AFBI

IE
5 records

Discus

Protection expired

Lolium perenne L. · Perennial ryegrass

Euro Grass Breeding GmbH Co. KG

DE
5 records

Daphnis

Active

Lolium multiflorum Lam. · Italian ryegrass

Saatzucht Steinach GmbH & Co KG

DE
4 records

Dely

Active

Fragaria L. · Strawberry

LEIS, Michelangelo, IT / MARTINELLI, Alessio, IT / CASTAGNOLI, Gianfranco, IT

UA
5 records

Dactylis glomerata L. · Cocksfoot

Grassland Oregon

PL
4 records

Diandra

Active

Phleum pratense L. · Timothy grass

Pertti Pärssinen^^^Mika Isolahti

FI
6 records

Trifolium repens L. · White clover

Cal/West Seeds (US)

FR
5 records

Daniela

Active

Medicago sativa L. · Alfalfa

VARGA PAUL MIHAILSCHITEA MARIAMARTURA TEODORDIHORU ALEXANDRINAHAGIMA IOANA

RO
6 records

Diana

Protection expired

Rosa L. · Rose

Rosen Tantau KG

RO
4 records

Corvette

Active

Lilium L. · Lily

Mak Breeding Rights B.V.

NL
4 records

Cometa

Active

Hordeum vulgare L. · Barley

CREA-CENTRO DI RICERCA INGEGNERIA E TRASFORMAZIONI AGROALIMENTARI (CREA-IT-RM)

IT
5 records

Cobus

Active

Brassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts

Syngenta Seeds, NL

NL
4 records

Cocdestin

Protection expired

Rosa L. · Rose

JAMES COCKER AND SONS

IE
4 records

Chinook

Active

Agrostis stolonifera L. · Creeping bentgrass

Peak Plant Genetics, LLC & Rutgers, The State University of New Jersey

CZ
4 records

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