Variety traits
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.
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.
Vitis vinifera L. · Common grape vine
Walker Michael Andrew / Tenscher Alan C. / Riaz Summaira / Romero Ninfa
Lolium perenne L. · Perennial ryegrass
DLF B.V.
Triticum aestivum L. · Bread wheat
Saatzucht Donau GmbH & Co.KG
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Trifolium pratense L. · Red clover
University of Alberta
Triticum aestivum L. · Bread wheat
SELGEN A.S
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
SANTHO BEHEER B.V.
Linum usitatissimum L. · Common flax
Linéa Semences de Lin G.I.E.
Lolium perenne L. · Perennial ryegrass
ABERYSTWYTH UNIVERSITY
Poa pratensis L. · Kentucky bluegrass
Malopolska Hodowla Roslin Spolka z o.o.
Lolium perenne L. · Perennial ryegrass
DLF Seeds A/S
Triticum aestivum L. · Bread wheat
LEMAIRE DEFFONTAINES S.A.S.
Lolium perenne L. · Perennial ryegrass
ABERYSTWYTH UNIVERSITY
Poa pratensis L. · Kentucky bluegrass
DLF Seeds A/S
Digitalis L. · Foxglove
Tristram David Ralph|Arundel, West Sussex BN18 0AS, GB
Clematis L. · Clematis
van Zoest Jan
Heuchera L. · Coral Flower
Janet N. Egger
Lilium L. · Lily
Mak Nicolaas Aloysius Maria|'t Zand, NL
Lilium L. · Lily
Testcentrum voor Siergewassen B.V.
Campanula L. · Bellflower
Blom Arie
Phygelius E. Mey. · Cape fuchsia
Yates Frederic Charles|Congleton, Cheshire CW12 4SP, GB
Astilbe Buch.-Ham. ex D. Don · False goat's beard
WIN VAN VEEN
Asplenium antiquum Makino
van Duijnhoven Henk
Echinacea purpurea (L.) Moench · Purple coneflower
Oudolf Petrus Hendricus