Variety traits
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.
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.
Vitis L. · Grapevine
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Vitis L. · Grapevine
GUIDO CIPRIANI / ENRICO PETERLUNGER / GABRIELE DI GASPERO / MICHELE MORGANTE / SIMONE DIEGO CASTELLARIN / RAFFAELE TESTOLIN
Allium fistulosum L. · Welsh onion
TAKII EUROPE B V
Triticum aestivum L. · Bread wheat
N. Tsenov, K. Kostov, D. Atanasova, I. Mankovski, I. Stoeva, T. Petrova, I. Iliev, V. Ivanova
Vitis L. · Grapevine
GOLODRIGA PAVEL YaKOVLEVICh / KOSTIK MARIYa ANTONOVNA / YuRChENKO VLADIMIR YuR'EVICh / GALENKO VASILIJ VIKTOROVICh / DRANOVSKIJ VIKTOR ALEKSANDROVICh / YuRChENKO OLEG VLADIMIROVICh
Thuja occidentalis L. · Northern white-cedar
Dariusz Kapias
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Shiobara Shigeo
Brassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts
BEJO ZADEN
Hybrids between Citrus x aurantium L. x Citrus trifoliata L.
Forsythia Vahl · Forsythia
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Brassica oleracea L. (Cauliflower Group) · Cauliflower
BEJO ZADEN
Rosa L. · Rose
WARNERS ROSES
Allium porrum L. · Leek
Enza Zaden Beheer B.V.
Prunus persica (L.) Batsch · Peach
Laurence Maillard, Arsene Maillard
Geranium L. · Crane's Bill
Blooms of Bressingham Ltd
Zantedeschia Spreng. · Arum-lily
PETER BECKMAN
Medicago sativa L. · Alfalfa
Barenbrug Holland BV (NL)
Prunus laurocerasus L. · Cherry laurel
Straver
Leptospermum J.R. et G. Forst. · Tea Tree
P. Ollerenshaw
x Triticosecale Wittm. ex A. Camus · Triticale
CREA-CENTRO DI RICERCA INGEGNERIA E TRASFORMAZIONI AGROALIMENTARI (CREA-IT-RM)
Brassica oleracea L. (Cauliflower Group) · Cauliflower
Syngenta Seeds B.V.
Brassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts
Syngenta Seeds B.V.
Tulipa L. · Tulip
Testcentrum voor Siergewassen B.V.
Triticum aestivum L. · Bread wheat
Florimond Desprez Veuve et Fils, FR