Results 181 to 190 of about 9,628 (217)
Some of the next articles are maybe not open access.
Isozyme Analysis of Micropropagated Betula Pendula Roth
1988Micropropagation is becoming an increasingly popular technique used by forest tree breeders to circumvent the problems of long life cycle, prolonged juvenility and disturbance in flower and seed production. To date, however, little is known concerning the inherent genetic changes which may accompany the micropropagation process.
Grzegorz Kosinski +2 more
openaire +1 more source
Autotetraploid plants from callus cultures of Betula pendula Roth
Tree Physiology, 1990Autotetraploid plants with 2n = 56 chromosomes were found in a population of plants derived from callus cultures of stem internodes of silver birch (Betula pendula Roth) with 2n = 28 chromosomes. These plants were readily identified by their twisted, pubescent foliage and slow rate of growth, and by cytological examination.
openaire +2 more sources
Phenolic compounds in silver birch (Betula pendula Roth) wood
Holzforschung, 2006Abstract Three new phenolic compounds (4-hydroxy-2-methoxyphenyl-6-O-syringoyl-β-D-glucopyranoside, 2-hydroxy-4-methoxyphenyl-6-O-syringoyl-β-D-glucopyranoside, and 4-hydroxymethyl-2-methoxyphenyl-6-O-syringoyl-β-D-glucopyranoside) and 15 known phenolic compounds (two phenyl glucoside esters, five lignans, three diarylheptanoids and five ...
Eveliina Hiltunen +2 more
openaire +1 more source
Betula pendula Roth genetic risk assessment
2019A summary of the current understanding of genetic diversity and life history traits of Betula pendula within the UK, including a genetic risk assessment for population sampling and current knowledge gaps.
openaire +1 more source
Effects of ozone on birch (Betula pendula Roth.) clones
Water, Air, & Soil Pollution, 1995Saplings of five birch clones (Betula pendula Roth.) were exposed to ozone doses 1.2–1.7 × higher than the ambient under field conditions during growing seasons 1991–1993. The clones were also fumigated with 40 ppb – 150 ppb ozone in three chamber experiments.The effects of nitrogen supply on ozone responses were studied using field fumigation system ...
E. P��kk�nen +2 more
openaire +1 more source
Ozone-Induced Defense Reactions in Birch (Betula pendula Roth)
1996We have studied the responses of ozone sensitive and insensitive birch (Betula pendula Roth) clones to ozone and analyzed cell death, changes in enzyme activities, metabolite concentrations and gene expression. Cell death, measured by vital stain Evan’s Blue permeability, increased in both clones similarly.
J. Kangasjärvi +4 more
openaire +1 more source
Somatic embryogenesis in birch (Betula pendula Roth.)
1995The genus Betula consists of 40–60 species of deciduous trees and shrubs, distributed in the cooler parts of Europe, Asia, and North America. Most species are extremely hardy, some grow at the far north around the Arctic Circle, where they form the northern treeline.
openaire +1 more source
Signaling Events during Macrophage Activation with Betula pendula Roth Pectic Polysaccharides
Bulletin of Experimental Biology and Medicine, 2014We studied the effect of two pectic polysaccharides PS-B1-AG and PS-B2-RG that were contained in total polysaccharides extracted from Betula pendula leaves on NO production by mouse macrophages and the contribution of signaling molecules to macrophage activation by the test substances.
A A, Ligacheva +11 more
openaire +2 more sources
Potassium nutrition and free polyamines of Betula pendula Roth and Betula pubescens Ehrh.
Plant and Soil, 2002Potassium 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
Betula pendula Roth, Betula tianschanica Rupr. - BETULACEAE
2023Olim K. Khojimatov, Rainer W. Bussmann
openaire +1 more source