Evans, Katherine J.2006-12-282006-12-2819961996http://hdl.handle.net/2440/18727Bibliography: leaves 148-166.vi, 169, [4] leaves, [20] leaves of plates : ill. (some col.) ; 30 cm.This study identifies genetic variation in Australian Uncinula necator populations. Techniques were developed for molecular and phenotypic markers for U. necator. Mating types of Australian clonal lines were identified and viable cleistothecia and infective ascospores were produced in vitro. The study establishes the foundation for investigating the population biology of U. necator, by identifying two distinct genetic groups, A and B, and micro-geographical variation among 35 clonal lines from various Australian viticultural regions.237343 bytesapplication/pdfenPowdery mildew diseases.Powdery mildew diseases Australia.Grapes Diseases and pests Australia.Thesis