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
Marie Louise Meilland (FR)
Rosa L. · Rose
SNC Meilland (FR)
Rosa L. · Rose
Marie Louise Meilland (FR)
Brassica napus var. napus · Rapeseed
NORDDEUTSCHE| Norddeutsche Pflanzenzucht Hans-Georg Lembke KG
Rosa L. · Rose
MEILLAND ALAIN ANTOINE
Allium cepa L. var. cepa · Onion
Enza Zaden Beheer B.V.
Spinacia oleracea L. · Spinach
Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa w Ozarowie Mazowieckim Spolka z o.o.
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
Hofmann Christa
Rosa L. · Rose
W. Kordes Sohne Rosenschulen GmbH & Co KG| DE
Clematis L. · Clematis
Friedrich Westphal
Triticum aestivum L. · Bread wheat
KWS MOMONT RECHERCHE SARL, FR
Medicago sativa L. · Alfalfa
SECURITY SEEDS
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Lenkijos sodininkystės ir gėlininkystės institutas
Lilium L. · Lily
SUN VALLEY BULB. Farm Inc (FR)
Rosa L. · Rose
KORDES' SOEHNE| W. Kordes' Soehne Rosenschulen GmbH & Co KG
Hordeum vulgare L. · Barley
LOCHOW-PETKUS
Fragaria L. · Strawberry
Sort ie suspil`nym nadbanniam
Triticum aestivum L. · Bread wheat
SAATEN UNION RECHERCHE
Allium cepa L. · Onion
CORA SEEDS S.R.L
Rosa L. · Rose
Iris Helga Hetzel
Lolium multiflorum Lam. · Italian ryegrass
RAGT| RAGT (Societe Anonyme)
Triticum aestivum L. · Bread wheat
PROF. F. FAJERSSON C/O SV. WEIB.
Tulipa L. · Tulip
Roman Szymański
Hydrangea quercifolia W. Bartram · Oakleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Flemer