Pathogen diversity and screening for minor gene resistance to Pyrenophora teres f. teres in barley and its use for plant breeding

The diversity of isolates of Pyrenophora teres f. teres, the causal agent of net form net blotch (NFNB), was studied using a set of 24 Australian barley varieties. Screening at the seedling and adult plant stages was used to detect and demonstrate the relative importance of resistance at both growth stages. The results showed that almost all isolates vary in virulence as expected from a sexually reproducing population and the measure of...