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 twelve Pinus taxa (Pinus 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) CPI and ACL 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 section Strobi.