Genotypic Variation among Native Scots Pine Populations in Scotland based on Monoterpene Analysis

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Abstract
The monoterpene composition of the shoot cortical resin of 6705 native Scots pine trees from 41 sites in Scotland was determined by gas chromatography. Each tree was allocated to one of a number of biochemical genotypes. Variation between sites allowed the natural range to be divided into several areas of biochemical similarity, the most distinct being a north-western group of sites with Shieldaig as its most distinctive site. Other areas included a northern group, a south-western group centred on the Great Glen, a central north-south region, central Speyside, and outer Speyside/eastern Deeside. Variation was detected at several levels within some woodlands. Relationships between sites and between regions, as shown by mathematical analyses of the biochemical parameters, can be used as a guide in planning replanting programmes.

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