Picea obovata Ledeb. wood biochemical characteristics as state of plants

Abstract

The process of forest destruction is very dynamic and covers the entire boreal zone of the Northern hemisphere. Against the background of deterioration of the sanitary condition of plantings, pathogenic organisms are activated. The article presents materials on the study of the chemical composition of wood of individuals of different life States of Pícea obovata Ledeb. In the context of IPS typographus L. distribution It is suggested that there is a difference in the chemical structure of wood in individuals of Siberian spruce in places of mass drying, which affects the population of pests. Plants of various life States were studied for the content of water-soluble, resin-like extractives and tannins. The obtained data were subjected to statistical processing. The results of the research revealed that the overall content of extractive substances is influenced by the vital state of individuals and growing conditions. It was found that with the deterioration of the plant condition, there is an increase in extractive substances. The overall increase in extractive substances occurs due to an increase in the group of water-soluble substances, namely tannins. The highest content of all groups of metabolites (including tannins) was observed in individuals of a satisfactory life condition.