Diversity of nonacosan-10-ol and n-alkanes among 12 Pinus taxa

Abstract

The content of nonacosan-10-ol and n-alkanes in needle waxes of 12 Pinus taxa (P. halepensis, P. heldreichii, P. mugo, P. nigra ssp. nigra, P. nigra ssp. dalmatica, P. peuce, P. pinaster, P. pinea, P. ponderosa, P. strobus, P. sylvestris and P. wallichiana) were examined. In eight Pinus taxa (except of P. halepensis, P. pinaster, P. heldreichii and P. peuce) nonacosan-10-ol contents were examined for the first time. In all examined pines C29, C27 or C25 were the main n-alkane compounds. C range was mainly 18-–33. In six Pinus taxa (P. mugo, P. nigra ssp. dalmatica, P. sylvestris, P. pinea, P. strobus and P. wallichiana) carbon preference index and average chain length values were examined for the first time. In the plane of Axis 1 (PCA), P. strobus, P. mugo and P. wallichiana were strongly separated from P. heldreichii and P. pinea. In the plane of Axis 2, P. peuce, P. strobus and P. wallichiana as well as P. heldreichii and P. pinea diverged from other examined species. In DA, P. heldreichii, P. strobus, P. peuce and P. wallichiana diversed. CA divided sections Pinus and Pinaster from the section Strobi.