Variety traits

Frost hardiness

Frost hardiness is the genetically determined ability of a plant to withstand exposure to sub-zero temperatures without tissue damage. This indicator reflects the critical temperature threshold beyond which the plant dies.

Mentioned in descriptions 11 978 varieties reference book.

Frost hardiness represents the ability of a plant organism to resist the impact of low sub-zero temperatures. It determines the critical threshold above which plant tissues undergo irreversible damage or death. Unlike overall winter hardiness, which also accounts for damping-off and the effects of thaws, frost hardiness focuses specifically on the cellular response to cold exposure.

This trait is genetically determined; however, its expression depends on the physiological state of the plant and the dynamics of external conditions. Frost hardiness is not a constant value: it increases during the period of deep winter dormancy and gradually decreases towards spring, as the plant loses its ability to resist cold due to dehardening.

The evaluation of frost hardiness during variety testing is conducted through laboratory freezing in controlled conditions or through long-term field observations of crop survival. For variety comparison, scoring scales, percentage of survival, or the determination of minimum permissible temperatures in degrees Celsius are used. Maximum realization of the innate genetic potential for frost hardiness is ensured by optimal sowing dates and adequate phosphorus-potassium fertilization in the autumn.

Sources10

Breakdown by crop

Frost resistance of roses 263 Frost Resistance — Hydrangea macrophylla 162 Grapevine Cold Hardiness 152 Lily Frost Hardiness 106 Apple Frost Resistance 84 Grapevine Cold Hardiness 78 Clematis Frost Resistance 71 Tulip frost resistance 64 Peach frost hardiness 52 Frost resistance — soft wheat 44 Frost Hardiness of Rhododendron 36 Frost resistance of Heuchera 36 Frost resistance of common heather 30 Frost Hardiness of Zantedeschia 29 Pear frost resistance 24 Frost Hardiness of Sweet Cherry 24 Apple Frost Resistance 24 Gladiolus frost resistance 24 Cold hardiness of fig 24 Chrysanthemum Frost Resistance 21 Plum Frost Resistance 19 Apricot frost resistance 19 Frost resistance — garden strawberry 19 Blueberry frost resistance 18

Found in these crops

Grapevine 301 Rose 193 Lily 150 Common grape vine 142 Apple 119 Tulip 112 Bigleaf hydrangea 82 Clematis 66 Peach 63 Bread wheat 56 Azalea 44 Highbush blueberry 42

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.

Luba

Active

Tulipa L. · Tulip

Mastenbroek Bloembollen B.V./Vriend Cultures B.V.

1 record

Margarethe

Active

Erica gracilis J. C. Wendl. · Slender heath

HOLZ| Hans-Peter Holz

2 records

Liviia

Active

Vitis vinifera L. · Common grape vine

Oliinykov Mykola Petrovych, Zahorul`ko Vitalii Volodymyrovych, Lykhovs`koi Volodymyr Volodymyrovych, Volynkin Volodymyr Oleksandrovych, Avidzba Anatolii Mkanovych,

2 records

Łutówka 226 ISK

Withdrawn

Prunus cerasus L. · Sour cherry

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

1 record

Makarska

Active

Tulipa L. · Tulip

Vertuco B.V.

1 record

LUCKY

Terminated

Chrysanthemum L. · Chrysanthemum

N.V. JOLU-PLANT

1 record

LELDE

Active

Rosa L. · Rose

Dzidra Rieksta

1 record

Lehenda Karpat

Terminated

Pyrus communis L. · European pear

Mykychuk Oksana Ivanivna, Kozhokar Zina Myroslavivna, Dronyk Nataliia Illivna,

2 records

LAPED

Terminated

Rosa L. · Rose

Robert Louis Laperriere (FR)

1 record

LAPWIN

Active

Rosa L. · Rose

Philippe Laperriere (Roseraie Laperriere) (FR)/Richard Laperriere (Roseraie Laperriere) (FR)

1 record

LIEPAJAS AGRA

Active

Vitis vinifera L. · Common grape vine

Gunvaldis Ilgvars Vesmins

2 records

Lakomyi

Terminated

Prunus persica (L.) Batsch · Peach

Fedorova Ol`ha Stepanivna, Smykov Volodymyr Karpovych, Smykov Anatolii Volodymyrovych, Parfil`ieva Zoia Mykolaivna,

2 records

Kumir

Application submitted

Prunus armeniaca L. · Apricot

Klochko Nataliia Mykolaivna, Fedchenkova Halyna Oleksandrivna,

1 record

Kuklenski mavrud

Terminated

Vitis vinifera L. · Common grape vine

Mincho Kondarev, Dimitar Prodanski, Ivanka Boneva, Stoyan Kukunov, Penka Georgieva, Stoyanka Krastanova

1 record

Kryms`kyi Sonet

Protection expired

Prunus persica (L.) Batsch · Peach

Fedorova Ol`ha Stepanivna, Lobanovs`ka Valentyna Fedorivna, Latsko Tetiana Anatoliivna, Perfil`ieva Zoia Mykolaivna, Smykov Anatolii Volodymyrivna, Smykov Volodymyr Karpovych,

2 records

Książęca ISK

Terminated

Prunus cerasus L. · Sour cherry

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

1 record

Kometa

Active

Vitis vinifera L. · Common grape vine

Dylyk Antonina Petrivna, Stasieva Mariia Ivanivna, Yarmak IEvheniia Dmytrivna, Bankovska Mariia Hryhorivna, Tulaieva Maiia Ivanivna, Dokuchaieva IEvheniia Mykolaivna, Meleshko Larysa Fedorivna,

2 records

Korport

Terminated

Rosa L. · Rose

KORDES' SOEHNE| W. Kordes' Soehne Rosenschulen GmbH & Co KG

1 record

Korav

Protection expired

Rosa L. · Rose

KORDES' SOEHNE| W. Kordes' Soehne Rosenschulen GmbH & Co KG

1 record

Kyshmysh tairovs`kyi

Active

Vitis vinifera L. · Common grape vine

Stasieva Mariia Ivanivna, Morhunenko Ol`ha Hryhorivna, Bankovska Mariia Hryhorivna, Yarmak IEvheniia Dmytrivna, Meleshko Larysa Fedorivna, Dokuchaieva IEvheniia Mykolaivna,

2 records

Koralova

Terminated

Viburnum opulus L. · Guelder rose

Bozhkova Svitlana Pavlivna

1 record

Kondarev 10

Active

Vitis vinifera L. · Common grape vine

Mincho G. Kondarev

2 records

Kokardia

Protection expired

Rhododendron L. · Azalea

Erbe/Erbengemeinschaft Hans Hachmann

1 record

Kobzar

Active

Vitis vinifera L. · Common grape vine

Shein Tamara Volodymyrivna, Dylyk Antonina Petrivna, Storozhuk Kateryna Moisiivna, Tarakhtii Liudmyla Ivanivna, Chebanenko IEvheniia Pavlivna, Meleshko Larysa Fedorivna, Dokuchaieva IEvheniia Mykolaivna,

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.