No abstract

The monoterpenes from needles of 47 adult trees of Picea abies (L.) Karst., grown under natural conditions, were studied to get information about the tree-to-tree variation within three adjacent locations and the differences between the locations. For the absolute amounts of the monoterpenes the tree-to-tree variation ranged between 50% and 70%, expressed as the relative coefficient of variation. All three populations showed similar variations. When looking for different genotypes, at each location two groups of trees were observed, which were characterized by the ratio of myrcene to limonene.