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 perenne L. · Perennial ryegrass
DLF Seeds A/S
Alstroemeria L. · Alstroemeria
VAN ZANTEN EDUARD
Lolium perenne L. · Perennial ryegrass
DLF Seeds A-S, DK
Lolium perenne L. · Perennial ryegrass
RAGT 2N S.A.S
Trifolium hybridum L. · Alsike clover
PENDING
Pisum sativum L. · Pea
Thierry Bourgoin
Triticum aestivum L. · Bread wheat
Vladymyr Synek, Ruzhena Rosolova, Yidka Komarkova, Yvanna Byzhova, Martin Hromadko, Liudmila Bobkova, Pavel Amler,
Lolium perenne L. · Perennial ryegrass
DLF SEEDS A/S
Festuca rubra L. · Red fescue
Barenbrug Holland BV (NL)
Phleum pratense L. · Timothy grass
BARENBRUG HOLLAND
Pyrus communis L. · European pear
Festuca arundinacea Schreb. · Tall fescue
Barenbrug Holland BV (NL)
Medicago sativa L. · Alfalfa
Barenbrug Holland BV (NL)
Lolium perenne L. · Perennial ryegrass
Agroscope Reckenholz
Lolium perenne L. · Perennial ryegrass
Innoseeds B.V.
x Triticosecale Wittm. ex A. Camus · Triticale
WOS HENRYK / MACKOWIAK WALENTY / PAIZERT KAZIMIERZ O. STEFAN / SZELAG BOZENA / SZELAG JANUSZ / CICHY HENRYK / MAZURKIEWICZ LESZEK, O. JERZY
Lolium perenne L. · Perennial ryegrass
PRODANA SEEDS A/S (DK)
Alopecurus pratensis L. · Meadow foxtail
BAYERISCHE PFLANZENZUCHTGESELLSCHAFT EG & CO
Lolium perenne L. · Perennial ryegrass
Agroscope Reckenholz
Phleum pratense L. · Timothy grass
Barenbrug Holland BV (NL)
Lolium perenne L. · Perennial ryegrass
Pieter den Haan
x Triticosecale Wittm. ex A. Camus · Triticale
Lantmannen SW Seed AB
Lolium x hybridum Hausskn. · Hybrid ryegrass
Institute of Biological, Environmental & Rural Sciences, Aberystwyth University
Lolium perenne L. · Perennial ryegrass
DEUTSCHE SAATVEREDELUNG AG