Variation in the Monoterpenes of Pinus Ponderosa Laws

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Science  20 Mar 1964:
Vol. 143, Issue 3612, pp. 1337-1338
DOI: 10.1126/science.143.3612.1337


Wide differences from tree to tree were found in the monoterpene composition of the wood oleoresin of ponderosa pines located in the same geographic area in California. Differences attributable to variation within the tree, to the season of sampling, to the year of sampling, and to methods of analysis by gas chromatography were only slight. There may be an inverse relation between the amounts of Δ3- carene and β-pinene in a given tree.