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.
Triticum aestivum L. subsp. aestivum · Bread wheat
PLANT SELECT, spol. s r.o. (CZ)/Zemědělský výzkumný ústav Kroměříž, s.r.o. (CZ)/Národní centrum zemědělského a potravinářského výzkumu, v. v. i. (CZ)
Prunus armeniaca L. · Apricot
Craig A. Ledbetter (US)
Rhododendron L. · Azalea
RIHARDS KONDRATOVICS
Ilex aquifolium L. · Common holly
Erbe/Erbengemeinschaft Hans Hachmann
Fritillaria L. · Fritillary
V.O.F. de Keizerskroon
Dianthus caryophyllus L. · Carnation
Hodowla Roślin Bronisze sp. z o.o.
Atropa belladonna L. · Belladonna
Myronenko Svitlana Mykolaivna, Hlushcenko Liudmyla Anatoliivna, Kutsenko Nataliia Ivanivna,
Hippophae L. · Sea-buckthorn
Hans Joachim Albrecht
Tulipa L. · Tulip
Vertuco B.V.
Narcissus L. · Daffodil
"Bloembollenkwekerij J.S. Pennings ""De Bilt""
Prunus persica (L.) Batsch · Peach
Klochko Nataliia Mykolaivna, Sydorenko Mykhailo Fedorovych,
Prunus avium (L.) L. · Sweet cherry
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Lilium L. · Lily
Mak Breeding Rights B.V.
Rosa L. · Rose
Klymenko Zinaida Kostiantynivna
Prunus persica (L.) Batsch · Peach
Agriculture & Agri-Food Canada (CA)
Lolium x hybridum Hausskn. · Hybrid ryegrass
LFZ Raumberg-Gumpenstein Institut für Pflanzenbau und Kulturlandschaft
Rosa L. · Rose
HARKNESS ROSES and Co Ltd (GB)
Clematis L. · Clematis
Szczepan Marczyński
Rosa L. · Rose
PETER KAASTRUP
Corylus avellana L. · Common hazel
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Digitalis purpurea L. · Common Foxglove
TAKII & CO LTD
Medicago sativa L. subsp. sativa · Alfalfa
PANAM FRANCE SARL
Brassica oleracea L. (Curly kale Group) · Curly kale
L. DÆHNFELDT A/S
Brassica napus var. napus · Rapeseed
KWS Saat AG, DE