Testing the expression of resistance to insect attack: Resistance of jarrah ( Eucalyptus marginata) to jarrah leafminer ( Perthida glyphopa)

Micropropagated ramets of jarrah considered to be relatively resistant to jarrah leafminer were grown in the field and became infested with the moth's larvae. Mean mine size, which was used as a measure of resistance, differed between years, as did the number of completed mines. However, within each year, ramets developed mines of the same mean size as each other the ortet. Their resistance relative to other trees was consistent over a 5-year period.