13 R Supreme
ActiveMedicago sativa L. · Alfalfa
AGRIPRO BIOSCIENCES
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.
Medicago sativa L. · Alfalfa
AGRIPRO BIOSCIENCES
Clematis L. · Clematis
van Zoest Jan
Metasequoia glyptostroboides Hu et Cheng · Dawn redwood
William A. Head
Astrantia major L. · Masterwort
Jacobus R. de Jong
Euphorbia L. · Spurge
Miner Keith A. / Miner Jennifer Dixson
Corylus avellana L. · Common hazel
Narodne nadbannia
Hibiscus L. · Hibiscus
Roderick I. Woods
Dianthus x allwoodii hort. · Allwood pink
Whetman Pinks
Acer rubrum L. · Red maple
Warren Keith S.
Dianthus L. · Carnation
John Whetman
Lantana camara L. · Lantana
ZHANAO DENG
Rosa L. · Rose
EVERS CHRISTIAN
Salvia L. · Sage
STEVEN M EGGLETON
Thuja occidentalis L. · Northern white-cedar
Smits, Edwin Johannes A.
Campanula glomerata L. · Clustered bellflower
van der Zwet, Alexius Joannes J.
Brunnera macrophylla (Adams) I. M. Johnst. · Siberian bugloss
Zuikevich Alexander
Hydrangea paniculata Siebold · Panicled hydrangea
MICHAEL A DIRR
Lagerstroemia L. · Crape Myrtle
Michael Dirr
Rosa L. · Rose
Wilhelm-Alexander Kordes, Tim-Hermann Kordes, John-Vincent Kordes
Sedum L. · Ice Plant
Gossett Gary J.|Portland, OR, US
Malus Mill. · Apple
Warren Keith S.
Cornus kousa Burger ex Hance · Kousa dogwood
Thomas J. Molnar^^^John M. Capik
Brassica napus L. · Rapeseed
Andreas Gertz
Dianthus L. · Carnation
DIANTHUS S.S. (IT)