Testing Scots pine for resistance to Lophodermium needle cast

Abstract

A method for assessing resistance to Lophodermiurn needle cast has been developed and applied for analysis of genetically dependent resistance in Scots pine. Determination of the decrease in height growth caused by the fungal attack was a satisfactory method for assessing the resistance. The relative height growth of the most susceptible progenies was reduced to about 30 % of that of the most resistant progenies.