Spatial diversity of planted and untended silver birch (Betula pendula L.) stands
نویسندگان
چکیده
منابع مشابه
Genetic transformation of silver birch (Betula pendula) by particle bombardment.
We used in vitro callus and shoot cultures as target material for genetic transformation of silver birch (Betula pendula Roth) by particle bombardment. Cultivation of in vitro shoot cultures before particle bombardment and a long selection period, combined with a high concentration of selective agent after bombardment, led to the production of transformed plantlets that were stable, and no esca...
متن کاملLeaf senescence in silver birch (Betula pendula Roth)
Academic dissertation To be presented for public criticism, with permission of the
متن کاملSeasonal and within-stem variations of neutral lipids in silver birch (Betula pendula) wood.
Neutral lipids were analyzed in stem wood of a 7-year-old clone and in five 35-70-year-old mature trees of silver birch (Betula pendula Roth). In young trees and in mature wood of old trees, the free fatty acid fraction comprised less than 5% of the concentration of triacylglycerols (TG). The concentration of free linoleic acid was lowest in March when the young trees were dormant and highest d...
متن کاملPhotosynthesis and canopy characteristics in genetically defined families of silver birch (Betula pendula).
Net photosynthetic rates (A) of leaves in upper and lower crown layers (A(upper) and A(lower)), leaf area index (LAI), mean tilt angle (MTA), several leaf characteristics, and volume growth were observed in fast- and slow-growing families of a 14-year-old full-sib and half-sib family progeny test of Betula pendula Roth. Each measure of net photosynthetic rate was calculated after correcting mea...
متن کاملDifferential responses of silver birch (Betula pendula) ecotypes to short-day photoperiod and low temperature.
We investigated interrelations of dormancy and freezing tolerance and the role of endogenous abscisic acid (ABA) in the development of silver birch (Betula pendula Roth) ecotypes in controlled environments. Short-day treatment induced growth cessation, bud set and dormancy development, as well as initiation of cold acclimation and an increase in freezing tolerance. Subsequent low temperature an...
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ژورنال
عنوان ژورنال: Forest Research Papers
سال: 2012
ISSN: 2082-8926,1732-9442
DOI: 10.2478/v10111-012-0031-3