Abstract

The summer bud exudate of two plants of P. lasiocarpa analysed by GC/MS lacked the flavonoid aglycones and substituted benzoic and phenolic acid esters characteristic of other poplar species. Other compounds, such as syringaldehyde, syringic acid and shikimic acid, not previously identified in bud exudate of other poplar species were found, as were catechin, catechol, quinic acid and salicin, compounds not normally present in poplar bud exudate. The exudates from the two sources differed considerably in detailed composition.

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