36 research outputs found
Mating type, mefenoxam sensitivity, and pathotype diversity in Phytophthora infestans isolates from tomato in Brazil
Towards the isolation of genes determining insensitivity to phenylamide fungicides from Phytophthora infestans.
The detection of nonhybrid, trisomic, and triploid offspring in sexual progeny of a mating of Phytophthora infestans
Use of ELISA for assessing major gene resistance of potato leaves to Phytophthora infestans
A 2nd Worldwide Migration and Population Displacement of Phytophthora-Infestans
The appearance of the A2 mating type (previously restricted to central Mexico) in Europe during the 1980s prompted an investigation of the genetic make-up of European populations using allozyme loci as genetic markers. The investigation shows that major genetic changes have occurred in populations of Phytophthora infestans in the Netherlands. Poland, and the British Isles. It now appears that a new type of population has been introduced into several locations, and has displaced or is displacing the original populations in these locations. The new and old population types are characterized by unique allozyme alleles and genotypes. The mechanism for displacement of the 'old' by the 'new' population is not yet known