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.
Lolium x hybridum Hausskn. · Hybrid ryegrass
RAGT 2n, FR
Brassica napus var. napus · Rapeseed
PIONEER OVERSEAS CORPORATION
Rosa L. · Rose
Poulsen Roser A/S
Lolium perenne L. · Perennial ryegrass
Pure Seed Testing Inc (US)
Phleum pratense L. · Timothy grass
Feldsaaten Freudenberger G.m.b.H. & Co Kommanditgesellschaft
x Triticosecale Wittm. ex A. Camus · Triticale
WOLSKI| Dr.Tadeusz Wolski c/o SHR Laski / SUIJS| Loek W. Suijs c/o SW Seed B.V.
x Triticosecale Wittm. ex A. Camus · Triticale
WOLSKI| Dr.Tadeusz Wolski c/o SHR Laski / BIALOSKORSKI| Jan Bialoskorski c/o SHR Laski / CZERWINSKA| Ewa Czerwinska c/o SHR Laski / GRYKA| Jaroslaw Gryka
x Festulolium Aschers. et Graebn. · Festulolium
R.Dapkiene, S. Nekrosas, A. Sliesaravicius,
Triticum durum Desf. · Durum wheat
Probstdorfer Saatzucht GmbH&Co KG (AT)
Fragaria L. · Strawberry
THE BRITISH SOCIETY FOR HORTICULTURAL RESEARCH
Triticum aestivum L. · Bread wheat
BAYERISCHE PFLANZENZUCHTGESELLSCHAFT EG & CO
Rosa L. · Rose
Poulsen Roser A/S
Triticum aestivum L. · Bread wheat
LEMAIRE DEFFONTAINES SEMENCES
Triticum durum Desf. · Durum wheat
RAGT 2N S.A.S
Juglans regia L. · Persian walnut
Zhadan Viktor Markiyanovich, Larionova Tat`yana Petrovna, Mayatskaya Aleksandra Dmitrievna, Mayatskij Ivan Nikiforovich
Triticum aestivum L. · Bread wheat
Sejet Planteforaedling I,S
Vitis L. · Grapevine
Festuca pratensis Huds. · Meadow fescue
Instytut Hodowli I Aklimatyzacji Roslin (PL)
Allium cepa L. · Onion
ISI SEMENTI SPA
x Triticosecale Wittm. ex A. Camus · Triticale
Danko Hodowla Roslin Sp.z.o.o.
Triticum aestivum L. subsp. spelta (L.) Thell. · Spelt
Zoltán Bedő^^^László Láng^^^Ottó Veisz^^^Gyula Vida^^^Mariann Rákszegi
Rosa L. · Rose
WERNER NOACK
Zea mays L. · Maize
NICKERSON| Nickerson S.A.
Poa pratensis L. · Kentucky bluegrass
Deutsche Saatveredelung AG - DSV (DE)