Variation in Bud Exudate Composition of Populus nigra Assessed by Gas Chromatography-Mass Spectrometry

Abstract

Bud exudates from twelve clones of Populus nigra originating from seven countries were analyzed by gas chromatography-mass spectrometry and the principal compounds identified. Specimens of P. nigra var betulifolia differed in bud exudate composition from the other specimens analyzed, and were more similar in exudate composition to P. dcltoldes than were the other specimens. The range of bud exudate composition was greater than that which would be expected to occur within a single coherent species. © 1990, Verlag der Zeitschrift für Naturforschung. All rights reserved.