The origin of the wood and bark polyphenols of <i>Eucalyptus</i> species

Abstract

Several workers have subscribed to the view that polyphenols. like auxins, viruses, herbicides, etc., are translocated throughout the plant. In particular, the cambium has been considered to be the origin of the bark and heartwood polyphenols. The validity of this viewpoint could be tested if a comparison was made of the composition of the extractives in different tissues. This paper reports an examination and comparison of the polyphenols in various tissues of Eucalyptu8 a8trrngen8 and Eucalyptu8 marginata, the polyphenols being identified by chromatographic methods.