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.
Rosa L. · Rose
Werner Kordes / Reimer Kordes / Wilhelm Kordes
Brassica napus var. napus · Rapeseed
Reinhard Hemker
Rosa L. · Rose
W.KORDES'SOHNE
Rosa L. · Rose
W. Kordes Sohne Rosenschulen GmbH & Co KG| DE
Brassica napus L. · Rapeseed
LIMAGRAIN EUROPE
Pyrus communis L. · European pear
Prunus cerasus L. · Sour cherry
Trajkovski, Viktor
Prunus avium (L.) L. · Sweet cherry
Estonian University of Life Sciences Institute of Agricultural and Environmental Sciences Polli Horticultural Research Centre
Prunus cerasus L. · Sour cherry
Brassica napus var. napus · Rapeseed
Rosa L. · Rose
Reiner Kordes c/o W. Kordes'Söhne Rosenschulen GmbH & Co KG / Werner Kordes c/o W. Kordes'Söhne Rosenschulen GmbH & Co KG / Wilhelm Kordes c/o W. Kordes'Söhne Rosenschulen GmbH & Co KG
Vicia faba L. var. minuta (hort. ex Alef.) Mansf. · Tick Bean
Harold Littmann (DE)
Corylus avellana L. · Common hazel
Oregon State University
Rosa L. · Rose
W.KORDES'SOHNE
Rosa L. · Rose
W.KORDES'SOHNE
Corylus avellana L. · Common hazel
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Rhododendron L. · Azalea
Uosukainen, Marjatta
Vaccinium vitis-idaea L. · Lingonberry
Swedish University of Balsgard Dept. of Horticultural Plant Breeding
Rosa L. · Rose
Verkuyl
Rosa L. · Rose
W.KORDES'SOHNE
Populus L. · Poplar
Institute for Forestry and Nature Research (NL)
Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass
Semences De France (FR)
Ribes uva-crispa L. · Gooseberry
Allium porrum L. · Leek
Quedlinburg