Results 201 to 210 of about 10,026 (251)

Ozone exposure over two growing seasons alters root‐to‐shoot ratio and chemical composition of birch (Betula pendula Roth)

Global Change Biology, 2003
K. Yamaji, R. Julkunen-Tiitto, M. Rousi, V. Freiwald, Elina Oksanen   +4 more
semanticscholar   +3 more sources

Somatic embryogenesis in cell cultures of birch (Betula pendula Roth.)

Plant Cell, Tissue and Organ Culture, 1990
Somatic embryogenesis was induced in cell cultures of birch (Betula pendula Roth.) derived from juvenile tissue of seed embryos and from mature leaf tissue. Embryos were formed in liquid and on solidified medium containing 2,4-dichlorophenoxyacetic acid (2,4-D) and 6-furfurylaminopurine (kinetin). Sometimes somatic embryos formed only after transfer to
Kurten, Ulrika, Nuutila, Anna-Maria, Hannus, Riitta, Hämäläinen, Jari, Kauppinen, Veli   +4 more
openaire   +3 more sources

Within-stand variation in silver birch (Betula pendula Roth) phenology

Trees, 2014
Within a local population genotypes differ in the timing of bud burst, but genotypes with early bud burst unfold their leaves slower, resulting in an equal period of carbon gain. The ability of local populations to cope with disturbances like adverse weather events or a changing climate depends on the genotypic richness of such ...
Possen, Boy J.H.M., Rousi, Matti, Silfver, Tarja, Anttonen, Mikko J., Ruotsalainen, Seppo, Oksanen, Elina, Vapaavuori, Elina   +6 more
openaire   +1 more source

Low temperature sensing in silver birch (Betula pendula Roth) ecotypes

Plant Science, 2004
Non-freezing low temperature (LT) is the main factor controlling cold acclimation and dormancy release of woody plants in the cold and temperate regions. Through evolution many tree species have developed different ecotypes, which are closely adapted to the local climatic conditions.
Chunyang Li, Olavi Junttila, Pekka Heino, E Tapio Palva   +3 more
openaire   +2 more sources

Short-term effect of thinning on the carbon budget of young and middle-aged silver birch (Betula pendula Roth) stands

, 2021
Although thinning is a widely used silvicultural method, its effect on stand carbon (C) cycling is still poorly studied at the ecosystem level. The present case study estimated the two-year post-thinning effect on the C balance of a pole and a middle ...
K. Aun, M. Kukumägi, M. Varik, H. Becker, J. Aosaar, M. Uri, M. Buht, V. Uri   +7 more
semanticscholar   +1 more source

Phenolic compounds in silver birch (Betula pendula Roth) wood

Holzforschung, 2006
Abstract 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, Tuula T. Pakkanen, Leila Alvila   +2 more
openaire   +1 more source

Effects of ozone on birch (Betula pendula Roth.) clones

Water, Air, & Soil Pollution, 1995
Saplings 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, T. Holopainen, L. K�renlampi   +2 more
openaire   +1 more source

Estimating birch veneer (Betula pendula Roth) moisture content using infrared technology

European Journal of Wood and Wood Products, 2015
The potential of infrared (IR) technology in estimating the moisture content (MC) of birch (Betula pendula Roth) veneer was investigated. A total of 56 birch veneer sheets (42 × 130 cm2) were dried with a convective type laboratory-scale veneer dryer at drying times ranging from 1 to 6 min at 1 min intervals. After drying, IR data were recorded and the
Toni Antikainen, Anti Rohumaa, Mindaugas Bulota, Timo Kotilahti, Mark Hughes   +4 more
openaire   +4 more sources

ANALYSIS OF THE CONTENT OF TRITERPENE SAPONINS IN THE BUDS AND LEAVES OF SILVER BIRCH (BETULA PENDULA ROTH.)

"Medical & pharmaceutical journal "Pulse", 2023
Plants of the Birch family are used in official and folk medicine. The buds and leaves of silver birch are used in the Russian Federation as a diuretic.
D. V.a, Nesterova O.V., Dobrokhotov D.A., Zhevlakova A.S.   +3 more
semanticscholar   +1 more source

UPBEAT1-ROS-POD-PAL System under Different Xylogenesis Scenarios in Karelian Birch [Betula pendula Roth var. carelica (Mercl.) Hämet-Ahti].

Protein Peptide Letters
BACKGROUND In this study, UPBEAT1 (UPB1), which regulates superoxide radical hydrogen peroxide ratio together with Peroxidase (POD) activity and PAL gene expression, has been studied under apical meristem development during the xylem structural elements'
K. M. Nikerova, Nataliya Alekseevna Galibina, I. Sofronova, Y. Moshchenskaya, Maksim Anatol'evich Korzhenevskij, A. Klimova, T. Tarelkina   +6 more
semanticscholar   +1 more source