Search results for "HARDI"
showing 7 items of 17 documents
Developing fall-sown pea cultivars as an answer to the challenges of climatic changes
2012
Chapitre 4; International audience; Pea is considered rather well adapted to wide temperature ranges, with seedlings able to survive even -20 °C. From a physiological viewpoint, pea becomes tolerant to frost if first exposed to low non-freezing temperatures, causing the so-called cold acclimation. Delayed floral initiation helps some forage pea genotypes to escape the main winter freezing periods, as susceptibility to frost increases during the transition to the reproductive state. The oldest winter pea cultivars carry the dominant allele, Hr, although some bear hr. They are generally characterized by prominent winter hardiness and a long growing season, from sowing in early October until e…
Le réchauffement climatique diminue-t-il le risque de dégâts par le gel pour les cultures de climat tempéré ?
2014
Does global warming reduce the freezing injury risk to temperate climate crops? Winter crop response to a temperature increase is complex. Recent works point out, for cold climate vegetation, a paradoxical increase in freezing injury in a warming climate. Complementary works are needed to support these results for winter crops in temperate areas. To achieve this goal, five climatic records spanning a fifty years-long period for both daily minimum and maximum temperatures were analyzed with a model predicting frost hardiness and freezing damage for the winter pea crop. The methodological approach was based on three main steps: 1) the climate warming analysis of the 1987/1988 temperature shif…
Representatives of the Magnoliaceae juss. family growing upon different climatic conditions from the botanical gardens collections of Taras Shevchenk…
2016
Has been described the phenology of deciduous magnolias growing ex situ in botanical gardens of Acad. O.V Fomin SRC "Institute of Biology" National Taras Shevchenko University of Kyiv and the University and Latvia (Riga). 9 species, 1 variety and 3 hybrids identical for both collections of botanical gardens were selected and used for phenological observations. The studied plants were resistant to winter and summer climatic factors, were marked the parameters that determine their plasticity in less precipitation in Ukraine and Latvia, as compared to the places of their natural habitat, and expanding the use of exotic species in landscaping design of the megapolises.
Phenolics of Reichardia and their taxonomic implications
1992
Abstract Fifteen compounds have been detected in Reichardia tingitana and R. picroides (nine flavonoids, four cinnamic derivatives and two unidentified non-phenolic compounds). The present study examines the taxonomic implications of these compounds in relation to the morphological and karyological characteristics.
Can Physiological and Psychological Factors Predict Dropout from Intense 10-Day Winter Military Survival Training?
2020
Background: In the military context, high levels of physiological and psychological stress together can compromise individual&rsquo
Hardiness as a moderator variable between the Big-Five Model and work effort
2015
Abstract The aim of the present study is to analyse hardiness as a moderator variable among personality traits, assessed using the Big-Five or Five Factor Model (FFM) and responses in work effort of workers confronted with stress. Using a multi-occupational sample of 403 subjects, statistically significant correlations between the factors of the FFM and work effort were found, as well as between hardiness and effort, as predicted by the theoretical model. Finally, empirical evidence indicates that hardiness performs a moderating role between the factors of FFM and effort displayed, in the sense that hardiness (understood as a quantitative variable) affects the intensity of the relationship …
IMPAIRED DECISION-MAKING AND DIFFUSION ORIENTATIONAL COMPLEXITY IN PEOPLE WITH MULTIPLE SCLEROSIS
2013
Objective Difficulties with decision-making have been reported in people with multiple sclerosis (MS). It is however unclear what aspect of decision making is impaired, for example whether they are more impulsive, and how any impairments relate to grey matter pathology. In this study we assess grey matter microstructure using a novel measure of the number of diffusion orientations on diffusion MRI “diffusion orientation complexity (DOC)”. We studied DOC in cortical areas known to be associated with decision making and looked at its associations with performance on the Cambridge Gambling Task (CGT). Method One hundred and five patients with MS (61 RR, 26 SP, 18 PP; mean age: 45.9 years) and …