Variety traits

Winter hardiness

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.

Sources10

Breakdown by crop

Winter Hardiness of Roses 555 Winter hardiness of common wheat 220 Winter hardiness of apple trees 188 Winter Hardiness — Hydrangea macrophylla 187 Pear Winter Hardiness 123 Winter hardiness — perennial ryegrass 120 Winter Hardiness of Lily 91 Winter hardiness of winter rapeseed 81 Peach winter hardiness 71 Plum Winter Hardiness 65 Winter Hardiness of Clematis 61 Grapevine Winter Hardiness 56 Winter hardiness of winter barley 56 Winter hardiness — garden strawberry 52 Winter hardiness of sweet cherry 48 Tulip winter hardiness 42 Heuchera winter hardiness 40 Winter Hardiness of Alfalfa 39 Chrysanthemum winter hardiness 39 Winter hardiness of triticale 36 Winter Hardiness of Apple 36 Winter hardiness of Hydrangea serrata 36 Grapevine Winter Hardiness 35 Winter hardiness of apricot 35

Found in these crops

Rose 1 062 Apple 843 Bread wheat 657 Lily 410 European pear 348 Bigleaf hydrangea 315 Peach 264 Rapeseed 258 European plum 245 Grapevine 229 Perennial ryegrass 224 Sweet cherry 223

Varieties that feature this in their description

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.

Iwona

Active

Narcissus L. · Daffodil

M.H. van der Zon en Zn. V.O.F.

1 record

HORCOHORT

Terminated

Rosa L. · Rose

Colin Horner (GB)

1 record

Hranatovyi

Terminated

Triticum durum Desf. · Durum wheat

Nesterova Natalia Havrylivna, Molodchenkova Olha Olehivna, Vasyliev Oleksii Anatoliiovych, Rybalka Oleksandr Illich, Lytvynenko Mykola Antonovych, Kozlov Viktor Volodymyrovych, Albul Anatolii Oleksiiovych, Palamarchuk Anatolii Ivanovych,

2 records

IR Kniahynia BK

Active

Secale cereale L. · Rye

Instytut roslynnytstva im. V.IA. IUr'ieva Natsionalnoi akademii ahrarnykh nauk Ukrainy

1 record

Iren

Active

Allium sativum L. · Garlic

Parashchenko Serhii Viktorovych

2 records

Hora Hoverla

Terminated

Diospyros kaki L. f. · Persimmon

Derev"ianko Vavsyl` Mykolaiovych, Bohdanovs`kyi IUrii IEvlampiiovych,

2 records

Holdzauber

Terminated

Forsythia Vahl · Forsythia

Alieksieienko Oksana Volodymyrivna, Vol`s`ka IUliana Oleksandrivna,

1 record

Iskorka Tavrydy

Protection expired

Prunus armeniaca L. · Apricot

Moskalenko Klera Mykhailivna, Kostina Klavdiia Fedorivna, Sholokhov Oleksandr Mykhailovych, Horshkova Halyna Oleksandrivna,

2 records

Holden Tiara

Terminated

Hosta Tratt. · Hosta

Alieksieienko Oksana Volodymyrivna, Vol`s`ka IUliana Oleksandrivna,

1 record

Heleen Valstar

Withdrawn

Tulipa L. · Tulip

Ligthart Flowerbulbs

1 record

Invicta ISK

Active

Ribes uva-crispa L. · Gooseberry

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

1 record

INTROPI

Terminated

Rosa L. · Rose

INTERPLANT BV (NL)

1 record

INTERSTREEP

Terminated

Rosa L. · Rose

INTERPLANT BV (NL)

1 record

Ishizuchi-no-Hikari

Active

Hydrangea serrata (Thunb.) Ser. var. serrata · Tea-of-heaven

Information regarding the breeder received in the contribution to CPVO :Inaba Masaru

1 record

Honeoye MAR

Terminated

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Szkółka Markiewicz Agnieszka Markiewicz-Januszewska

1 record

Impact

Terminated

Festuca trachyphylla (Hack.) Hack. · Hard fescue

DLF-TRIFOLIUM| DLF-Trifolium A/S

1 record

INOVERIS

Terminated

Caryopteris Bunge · Caryopteris

Institut National de la Recherche Agronomique (FR)/GIE Saphinov (FR)

1 record

/Herlakh/

Terminated

Hordeum vulgare L. · Barley

Kees Boot

2 records

Inii

Withdrawn

Lavandula L. · Lavender

SVYDENKO LIUDMYLA

2 records

Ilka

Active

Clematis L. · Clematis

Uno Kivistik, Aili Kivistik

1 record

HARGLOBE

Terminated

Rosa L. · Rose

HARKNESS ROSES and Co Ltd (GB)

1 record

Harbinger ISK

Withdrawn

Prunus persica (L.) Batsch · Peach

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

1 record

Herbstfeuer

Terminated

Erica gracilis J. C. Wendl. · Slender heath

LEUVEN| Johannes van Leuven

2 records

Henichanka

Active

Triticum aestivum L. · Bread wheat

Lazer Petro Nartsysovych, Yokich Drahan Radomyrovych, Zhuzha Oleksandr Dmytrovych, Honcharova Kapitalina V'iacheslavivna, Babenko Dmytro Viktorovych,

2 records

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Variety traits

Maturity group 89 063
Yield 67 000
Vigor 53 548
Plant height 51 504
Lodging 50 198
Taste and aroma 36 010
Variety origin 29 523
Productivity 27 845

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.