Boxer
ActiveLolium x hybridum Hausskn. · Hybrid ryegrass
RESEARCH DEPARTMENT JOORDENS ZAADHANDEL B.V.
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
RESEARCH DEPARTMENT JOORDENS ZAADHANDEL B.V.
Hordeum vulgare L. · Barley
SAATZUCHT JOSEF BREUN GMBH and CO.KG
Hordeum vulgare L. · Barley
Nickerson International Research S.N.C.
Medicago sativa L. · Alfalfa
Klaus K. Nielsen
Triticum aestivum L. · Bread wheat
W. von Borries-Eckendorf GmbH & Co.KG
Brassica napus var. napus · Rapeseed
Norddeutsche, D
Triticum aestivum L. · Bread wheat
RAGT 2n
Triticum aestivum L. · Bread wheat
RAGT 2n
Festuca arundinacea Schreb. · Tall fescue
Lantmännen SW Seed
Lolium perenne L. · Perennial ryegrass
D.J.VAN DER HAVE
Hordeum vulgare L. · Barley
Secobra, F
Festuca rubra L. · Red fescue
Schumann Cord, Busch Heinrich,
Vaccinium corymbosum L. · Highbush blueberry
Szkola Glowna Gospodarstwa Wiejskiego
Prunus salicina Lindl. · Japanese plum
Festuca rubra L. · Red fescue
W WEIBULL
Brassica napus var. napus · Rapeseed
Deutsche Saatveredelung, D
Rosa L. · Rose
Poulsen Roser A/S
Festuca rubra L. · Red fescue
RAGT SA (FR)
Vaccinium corymbosum L. · Highbush blueberry
Szkola Glowna Gospodarstwa Wiejskiego
Rosa L. · Rose
Paolino, Marie-Louise/Meilland, M/Meilland, Alain Antoine
Trifolium pratense L. · Red clover
FORSCHUNGSANSTALT AGROSCOPE RECKENHOLZ
Lolium perenne L. · Perennial ryegrass
DLF Seeds A/S, 4000 Roskilde
Hordeum vulgare L. · Barley
Staatzucht Firlbeck GmbH & Co.KG
Medicago sativa L. · Alfalfa
Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE) , Agri-Obtentions S.A.