| virulence profile and genetic structure of a north dakota population of pyrenophora teres f. teres, the causal agent of net form net blotch of barley. | a pyrenophora teres f. teres population in north dakota was analyzed for virulence variation and genetic diversity using 75 monospore isolates that were collected across a 4-year period (2004 to 2007) from two north dakota state university agricultural experiment stations at fargo and langdon. pathogenicity tests by inoculation onto 22 barley differential lines at seedling stage revealed 49 pathotypes, indicating a wide range of pathogenic diversity. two-way analysis of variance of disease ratin ... | 2012 | 22494251 |