Abstract

As a result of incompatibility, Eucalyptus gunnii showed in the graft area of in vitro micrografts a typical accumulation of gallic, ellagic, gentisic and p-coumaric acid: (+)-catechin also increased in concentration. In compatible grafts, a lower concentration of phenolics accumulated. The possible role of both specific types of phenolic accumulation and the higher activities of soluble peroxidases and polyphenol oxidase in incompatible grafts as opposed to compatible ones is discussed.

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