Influence of Isolation Method on Growth Rate Characteristics of Populations of Phytophthora cinnamomi

Abstract

Direct plating and baiting methods were used to obtain 266 isolates of Phytophthova cinnamomi from eucalypt forest in north-eastern Victoria. Isolates derived by baiting grew faster than those from plating. Single zoospore progeny showed that many of those obtained by direct plating were probably heterocaryotic for determinants of growth rate, while those obtained by baiting exhibited significantly less variance among single zoospore progenies.