ZLV Online

Abstrakt

The paper deals with the growth and phenotypic characteristics of Norway spruce in three separate core zones of the Gene Conservation Unit (GCU) No. G102-1 Trčkov-Šerlišský kotel-Vrchmezí in the Orlické hory/Eagle Mts. at the Czech-Polish border. The research was carried out in representative stands of all three parts of the GCU, which were selected in the direction from their core towards the periphery and outside the border. In total, 15 stands were evaluated. In each stand, dendrometric measurements and phenotypic surveys were performed on representative sets of sample trees. Tree growth characteristics reached their maximum in the core zones of all three parts of GCU, but also in the exceptionally high-quality stand T2.1, whose above-average parameters influenced the results of analyzes. Another stands, V2 and T2, situated relatively close to the core zones, were found of rather average quality according to cluster analysis, however. In the statistical analysis, the stands V3.1, V3, V3.2 and T2.1 proved to be most outlying, because of their lower (V3.1, V3) or exceptionally high (T2.1, V3.2) production and quality. In summary, according to the best growth parameters of trees, three parts of GCU can be sorted in descending order as follows: Trčkov, Vrchmezí, Šerlišský kotel. It can be concluded that the most valuable groups of trees are located in the central parts of GCU, and thus represent an important genetic resource to be protected from negative effects of a gene flow from surrounding lower quality inferior stands. Results of this study could be used for an objectification of the method of incorporation the stands into GCU complexes. In particularly questionable cases, it is recommended to use also molecular-genetic methods for this purpose.