Results 1 to 10 of about 10,026 (251)

Evaluation of Antioxidative Mechanisms In Vitro and Triterpenes Composition of Extracts from Silver Birch (Betula pendula Roth) and Black Birch (Betula obscura Kotula) Barks by FT-IR and HPLC-PDA [PDF]

open access: yesMolecules, 2021
Silver birch, Betula pendula Roth, is one of the most common trees in Europe. Due to its content of many biologically active substances, it has long been used in medicine and cosmetics, unlike the rare black birch, Betula obscura Kotula.
Aleksandra Ostapiuk   +4 more
doaj   +3 more sources

Reproduction strategies of the silver birch (Betula pendula Roth) at post-industrial sites. [PDF]

open access: yesSci Rep, 2021
The study aimed to evaluate the parameters of reproductive traits, specimens’ fertility and reproductive efficiency observed in Betula pendula populations growing at different types of sites (zinc-lead heaps, coal mine heaps and unpolluted site).
Franiel I, Kompała-Bąba A.
europepmc   +8 more sources

Density Distribution in Wood of European Birch (Betula pendula Roth.) [PDF]

open access: yesForests, 2020
The aim of the presented research is to perform a comprehensive analysis of wood density variability on the longitudinal and transverse cross-section of log trees at the age of 70 to 72 years of Betula pendula Roth.
E. Dobrowolska   +2 more
semanticscholar   +4 more sources

Polar day syndrome: differences in growth, photosynthetic traits and sink-size patterns between northern and southern Finnish silver birch (Betula pendula Roth) provenances in native and non-native photoperiods. [PDF]

open access: yesTree Physiol, 2023
Continuous light (CL) is available throughout the polar day for plants in the Arctic during the growing season, whereas provenances of the same species experience a very different environment with non-CL (NCL) just a few latitudes to the south.
Tenkanen A   +4 more
europepmc   +2 more sources

Plantlet Anatomy of Silver Birch (Betula pendula Roth.) and Hybrid Aspen (Populus tremuloides Michx. × Populus tremula L.) Shows Intraspecific Reactions to Illumination In Vitro. [PDF]

open access: yesPlants (Basel), 2022
Micropropagation of forest reproductive material is becoming an increasingly important tool of climate-smart forest management, whose efficiency is depending on artificial illumination, which in turn can have species-specific effects.
Zeps M   +6 more
europepmc   +2 more sources

The leafhopper fauna in birch (Betula pendula Roth) stands [PDF]

open access: yesJournal of Forest Science, 2002
In birch (Betula pendula Roth) stands of the Děčín sandstone uplands (northern Bohemia) 55 species of leafhoppers were captured using photoeclectors, ground traps and shaking down onto sheets (23,855 specimens of larvae and imagoes).
E. Kula
doaj   +2 more sources

Silviculture of birch (Betula pendula Roth and Betula pubescens Ehrh.) in northern Europe. [PDF]

open access: yesForestry, 2010
Summary In Europe, two commercially important treelike birch species occur naturally: silver birch ( Betula pendula Roth) and downy birch ( Betula pubescens Ehrh.). Both species have a wide natural distribution area on the Eurasian continent, ranging from the Atlantic to eastern Siberia. Although birches occur throughout almost the whole of Europe, the
J. Hynynen   +5 more
semanticscholar   +3 more sources

Forestation chain for birch (Betula pendula Roth) in Finland. [PDF]

open access: yesSilva Fennica, 1978
During the 1970’s an average of 4 million (Roth) seedlings have been planted annually in Finland. The activities connected with the planting of this tree species, the selection of forestation sites, site preparation, planting out the seedlings and ...
Raulo, Jyrki
doaj   +2 more sources

Response of birch (Betula pendula Roth) phytophages to liming [PDF]

open access: yesJournal of Forest Science, 2008
: In the course of 2004-2007, the effects of compensation liming at the application dose of 1.5-3-6 t/ha dolomitic limestone on the elimination or activation of phytophages or other types of damage resulting in the loss of assimilatory organs did not ...
E. Kula
doaj   +2 more sources

The effect of stress factors on birch Betula pendula Roth [PDF]

open access: yesJournal of Forest Science, 2004
In a controlled pot trial, plants of birch (Betula pendula Roth) were treated in six variants: acid watering (pH 3), acid watering with spraying, drought, ammonium sulphate fertilisation, ammonium sulphate fertilisation in combination with drought, and ...
D. Kaňová, E. Kula
doaj   +2 more sources

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