Comparative biochemical analysis of centuries-old trees and 55-year old plantations of Quercus robur growing in the territory of National Park “Svyati Gory”
Journal Title: Лісівництво і агролісомеліорація - Year 2012, Vol 121, Issue
Abstract
Biochemical analysis of content of protein and some groups of secondary metabolites in pedunculate oak leaves for centuries-old trees and 55-year old plantations was made together with entomological analysis of the composition for dominant leaf-eating insects in summer 2012. Damage of 55-year plantations by Erannis defoliaria Cl. and Altica quercetorum Foud. was 6 and 2 times higher than that of the centuries-old oak trees. Biochemical analysis showed differences between these two groups of trees: content of protein differed on 6 %, hydrolysable tannins – on 23.6 %. The most significant difference was noticed for the content of condensed tannins – 2,5 times higher in leaves of centuries-old trees. According to publications, condensed tannins are able to decrease survival of herbivore larvae. It may be one of the reasons of more severe damage of 55-year old plantations with some number of drying trees.
Authors and Affiliations
L. Polyakova, S. Gamayunova, P. Jurova
Keywords
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