A water-soluble galactoglucomannan composed of D-galactose, D-glucose, and D-mannose in 1:3:17 mole proportion has been isolated from the secondary cell walls of Picea abies L. Karst. About 33% of the polysaccharide units were substituted by acetyl groups. Structural studies of the polymer indicated a beta-(1-->4)-linked glucomannopyranosyl backbone with a low content of branch points at O-6 of...

Variations in foliar mass and chlorophyll concentration are likely to reflect temporal variation in forest health well, by capturing both defoliation and discoloration symptoms. Canopy chlorophyll mass is the product of foliar mass and chlorophyll concentration. In the current project, we try to model these two variables using airborne LiDAR and hyper-spectral data, respectively. On ground we h...

This paper discusses the modeling of unsteady-state mass diffusion under concentrationdependent diffusivity through an orthotropic medium. Historically, a simpler one-dimensional formulation with constant medium properties has been used, leading to approximate solutions. The present work uses a finite element formulation with finite difference discretization in time. The code includes an elemen...

The massive decline of Norway spruce ( Picea abies (L.) Karst) has been observed in the Krušné hory during the last few decades. Before macroscopic changes occur (e.g . needle yellowing and foliar lost), the effect of stress factors is initially recognisable as the metabolic and microscopic changes. Phenolics compounds , lignin and photosynthetic pigments seem to be good indicators of needle pr...

Modified versions of the Cry3A gene of Bacillus thuringiensis (Bt) were transferred into Norway spruce (Picea abies). Both the biolistic approach and Agrobacterium tumefaciens mediated procedure were employed for transformation of embryogenic tissue (ET) cultures. The latter method proved to be more efficient yielding 70 transgenic embryogenic tissue lines compared with 18 lines obtained by bio...

Sundström, J., 2001. Evolution of genetic mechanisms regulating reproductive development in plants. Characterisation of MADS-box genes active during cone development in Norway spruce. Acta Univ.Ups., Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 612. 44 pp. Uppsala. ISBN 91-554-4969-7. The reproductive organs of conifers and angiosperms differ in mo...