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.
Hybrids between Echinacea purpurea (L.) Moench and Echinacea paradoxa (Norton) Britton
Jianping Ren
Tulipa L. · Tulip
J. Koeman
Echinacea Moench. · Coneflower
Ren Jianping
Ribes nigrum L. · Blackcurrant
Estonian University of Life Sciences Institute of Agricultural and Environmental Sciences Polli Horticultural Research Centre
Chrysanthemum x morifolium Ramat. · Florist's daisy
Deliflor Royalties B.V
Hordeum vulgare L. · Barley
CSIC/SEMILLAS BATLLE
Prunus avium (L.) L. · Sweet cherry
Estonian University of Life Sciences Institute of Agricultural and Environmental Sciences Polli Horticultural Research Centre
Rosa L. · Rose
BEAR CREEK GARDENS Inc. (US)
Prunus domestica L. · European plum
Estonian University of Life Sciences Institute of Agricultural and Environmental Sciences Polli Horticultural Research Centre
Lonicera caerulea L. var. kamtschatica Sevast. · Blue-berried honeysuckle
University of Saskatchewan, CAN
Platycladus orientalis (L.) Franco · Oriental arborvitae
Vorobiova Olena Anatoliivna
Ribes nigrum L. · Blackcurrant
Estonian University of Life Sciences Institute of Agricultural and Environmental Sciences Polli Horticultural Research Centre
Allium cepa L. var. aggregatum G. Don · Shallot
A.J. Smit
Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. · Pacific serviceberry
Instytut Ogrodnictwa - Państwowy Instytut Badawczy (The National Institute of Horticultural Research)
Chrysanthemum x morifolium Ramat. · Florist's daisy
Deliflor Royalties B.V
Rubus idaeus L. · Red raspberry
Johannes Parksepp 60%, Asta-Virve Libek 40%, Estonian Univerity of Life Sciences Institute of Agricultural and Environmental Sciences Polli Horticultural Research Centre, Polli, Karksi-Nuia, 69108, Viljandimaa, Estonia
Malus Mill. · Apple
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Lilium L. · Lily
Mak Leek Inc.
Fragaria L. · Strawberry
Egbertus Joseph Meulenbroek
Triticum aestivum L. · Bread wheat
Syngenta Participations AG
Tulipa L. · Tulip
J.A.Borst Bloembollen B.V.
Prunus avium (L.) L. · Sweet cherry
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Symphoricarpos Duham. · Snowberry
Hans Joachim Albrecht
Medicago sativa L. · Alfalfa
Cooperative Federee De Quebec C.P. 500 Station