Results 141 to 150 of about 4,206 (183)

Secondary metabolites of downy birch buds (Betula pubescens Erch.)

Zeitschrift für Naturforschung C, 2021
Abstract The subject of this study is the composition of low-molecular-weight metabolites in downy birch (Betula pubescens) buds and their participation in protection from various kinds of stress. Using the GC-MS, 640 compounds were detected, of which 314 were identified in downy birch buds for the first time.
Valery A. Isidorov, Jolanta Nazaruk, Marcin Stocki, Sławomir Bakier   +3 more
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Triterpene caffeates from bark of Betula pubescens

Phytochemistry, 1994
Abstract Three new caffeic acid esters [3β,23-dihydroxy-olean-12-en-28-oic acid 3β-caffeate, 3β,23-dihydroxy-olean-12-en-28-oic acid 23-caffeate and 3β,23-dihydroxy-lup-20(29)-en-28-oic acid 3β-caffeate] of triterpene alcohols and another four known compounds of this type were isolated from the outer bark of Betula pubescens .
Hefeng Pan, Lennart N. Lundgren, Rolf Andersson   +2 more
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Betula pubescens Ehrh.

2007
Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part B), pp. 343-369 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 349, DOI: 10.5281/zenodo ...
openaire   +1 more source

Composition and properties of birch syrup (Betula pubescens)

Journal of Agricultural and Food Chemistry, 1989
Description d'un procede d'obtention d'un sirop, dont on donne les proprietes physiques et chimiques, a partir de seve de bouleau de Finlande ; comparaison avec le sirop d ...
Heikki Kallio, Tuija Teerinen, Seija Ahtonen, Meri Suihko, Reino R. Linko   +4 more
openaire   +1 more source

Larger fungi associated with Betula pubescens in Greenland

Meddelelser om Grønland. Bioscience, 1990
A list of 102 larger fungi mainly associated with Betula pubescens in Greenland is given. Species from most of the major taxonomic groups of larger fungi are represented. The species have been classified into a number of broad mycogeographical types. It is concluded that the fungi associated with B.
Elborne, Steen A., Knudsen, Henning
openaire   +1 more source

Potassium nutrition and free polyamines of Betula pendula Roth and Betula pubescens Ehrh.

Plant and Soil, 2002
Potassium and free polyamine concentrations in the leaves of silver birch (Betula pendula Roth) and downy birch (Betula pubescens Ehrh) were followed during three successive growing seasons 1996, 1997 and 1998 in order to define K deficiency levels.
Sarjala, T., Kaunisto, S.
openaire   +1 more source

Defoliation increases carbon limitation in ectomycorrhizal symbiosis of Betula pubescens

Oecologia, 2004
Boreal forest trees are highly dependent on root-colonizing mycorrhizal fungi. Since the maintenance of mycorrhizal symbiosis implies a significant carbon cost for the host plant, the loss of photosynthetic leaf area due to herbivory is expected to reduce the host investment in mycorrhizae.
Markkola, Annamari, Kuikka, Karita, Rautio, Pasi, Härmä, Esa, Roitto, Marja, Tuomi, Juha   +5 more
openaire   +2 more sources

Betula pubescens Ehrh.

2005
Prikazane su osnovne osobine i rasprostranjenost svojte Betula pubescens Ehrh., te je dana procjena ugroženosti prema IUCN kriterijima.
Šegulja, Nedjeljka, Šoštarić, Renata, Nikolić, Toni   +2 more
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Sun and shade leaves inBetula pubescensandBetula pendula

Transactions of the Botanical Society of Edinburgh, 1980
Summary Measurements of the net photosynthesis and dark respiration rates of excised twigs from Betula pubescens Ehrh. subsp. odorata (Bechst.) Warburg and B. pendula Roth, at different light intensities were made using infra-red gas analysis. B. pubescens appears to possess leaves which on the basis of physiological responses can be described as sun ...
P.A. Thomas, J.B. Kenworthy
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High-performance liquid chromatographic determination of flavonoids in Betula pendula and Betula pubescens leaves

Journal of Chromatography A, 1998
Abstract A high-performance liquid chromatography (HPLC) procedure based on a water–methanol gradient with tetrahydrofuran for simultaneous analysis of flavonoids and other phenolics of differing polarities in birch leaves was developed. Mobile phases with and without tetrahydrofuran or orthophosphoric acid provided additional information for ...
Markku Keinänen, Riitta Julkunen-Tiitto
openaire   +1 more source