The content and distribution of stilbenes and resin acids in Scots pine (Pinus sylvestris) and spruce (Picea abies), sampled in central Norway, have been examined. The contents of pinosylvin stilbenes in pine heartwood/living knots were 0.2-2/2-8 %(w/w). No stilbenes could be detected in spruce (Picea abies). The resin acid contents of pine sapwood/heartwood and knots were 1-4 and 5-10 % (w/w),...

In those regions of Europe where they coexist, the F and S intersterility groups (ISGs) of Heterobasidion annosum (Fr.) Bref. are primarily found on Abies spp. and Picea abies (L.) Karst., respectively. Eighty-three isolates of H. annosum were collected from Abies alba Mill. from 19 sites in Italy, including 10 Abies-Picea mixed conifer stands in the eastern Alps. The ISGs of a subsample of 34 ...

A pulse-treatment of embryos of Picea abies (L.) Karst with cytokinin efficiently and reproducibly induces the coordinate de novo formation of bud primordia from subepidermal cells. The cytokinin treatment also affects the germinative development of the embryo; chloroplast maturation is delayed, and cell elongation is completely suppressed. We have analyzed the protein patterns in developing sp...

Umbelliferone, Quantitative Estimation, Picea abies, Genetic Families A compound showing blue fluorescence under UV-light was isolated from spruce needles and identified as umbelliferone. Structure analysis was based on UV and mass spectroscopy as well as chromatographic comparison with authentic material. Quantitative evaluation by direct measure­ ment of the fluorescence of the umbelliferone ...

the aim of this study was to compare rainfall interception (i) in a natural forest of fagus orientalis l. with a neighboring picea abies plantation in kelardasht area, the caspian forests, north of iran. to measure gross rainfall (gr), four manual collectors were installed in an open area adjacent to the forest sites and throughfall (tf) was measured using 20 collectors randomly located underne...

The influence of three types treatment on seedling survival percentage, growth and Armillaria infestation Fagus sylvatica L. (FAGUS), Abies alba Mill. (ABIES) Picea abies (L.) H. Karst. (PICEA) seedlings were tested in this study: (i) inoculation with the Ectovit® preparation containing ectomycorrhizal fungi (INOCUL), (ii) + Conavit® fertilizer (INOCUL FERTILIZ) (iii) untreated group (CONTROL)....

Dehydroascorbate and traces of ascorbate were present apoplastically in living spruce (Picea abies) twigs. Since the proposed apoplastic ascorbate degradation pathway contains several steps that possibly generate H(2)O(2), the effects of ascorbate and some of its degradation products were tested on apoplastic H(2)O(2) concentrations in a cell culture of P. abies as a model and on non-enzymic H(...

The Norway spruce (Picea abies), the most important tree species in European forests, is relatively sensitive to salt and does not grow in natural saline environments. Yet many trees are actually exposed to salt stress due to the common practice of de-icing of mountain roads in winter, using large amounts of NaCl. To help develop strategies for an appropriate use of reproductive seed material o...

the coniferae which are propolis sources in iran i- pinaceae   hassan nazarian* *imam khomeini higher education center, agricultural research, education and extension organization e.mail: [email protected]   abstract the coniferae are from important propolis sources of iran. pinaceae have a particular importance in this taxon. all species of this family do not have any natural distribution ...