Individual variability in the composition of volatile secretions of scots pine needles in populations of Khakassia and Tuva

• Published in: Contemporary problems of ecology Vol. 5; no. 3; pp. 292 - 299
• Main Authors: Tikhonova, I. V, Aniskina, A. A, Mukhortova, L. V, Loskutov, S. R
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer-Verlag 01-05-2012; SP MAIK Nauka/Interperiodica; Springer Nature B.V
• Subjects: alpha-pinene; Biomedical and Life Sciences; conifer needles; Ecology; Essential oils; Life Sciences; Pine needles; Pine trees; Pinus sylvestris; Steppes; trees; variance; volatile compounds; composition of terpenoids; Scots pine; individual variability
• ISSN: 1995-4255; 1995-4263
• DOI: 10.1134/S1995425512030171

The results of the study of the qualitative composition and relative content of highly volatile compounds from the needles in two natural pine populations located in the forest-steppe zone in the south of Central Siberia are presented. Altogether, 89 components were isolated. Analysis of intra- and interpopulation variability of 31 terpenoids (mono- and sesquiterpene fractions) was conducted. The spatial structure of the variance of features was analyzed. Significant interpopulation differences in the content of most compounds were registered. It was determined that, as growing conditions deteriorate, the mass fraction of lighter monoterpene compounds (especially α-pinene) is increased within populations, and qualitative diversity of the components of essential oils is decreased. The groups of terpenoids, the relative content of which is to a different degree associated with interpopulation differences and variety of the growing conditions of trees within populations, were isolated.