Variability in pathogenicity of Melampsora allii-populina expressed on popular cultivars.

Autor: Frey, P., Pinon, J.
Předmět:
Zdroj: European Journal of Forest Pathology; Dec1997, Vol. 27 Issue 6, p397-407, 11p
Abstrakt: A collection of 42 isolates of Melainpsora allii-populina was established. Fourteen isolates were collected from various poplar cultivars over several French localities and 28 isolates from the alternate hosts obtained from nature or after inoculation. These isolates were inoculated in the laboratory on a large range of poplar cultivars belonging to several species. No isolate proved pathogenic on all cultivars and many qualitative interactions were observed between isolates and cultivars. This is the first evidence for the existence of physiological races within this fungus. No link was found between pathogenicity on poplar and on the alternate hosts.
Databáze: Complementary Index