Race-specific effects in major genic and polygenic resistance of barley to barley leaf rust in the field: identification and distinction

Abstract

Six partially resistant spring barley cultivars were exposed to four barley leaf rust (Puccinia hordei) races in the field and in the greenhouse. The 24 cultivar-race combinations were tested in field plots of 1.5×1.5 m2 in two replications over two years. To reduce the interplot exchange of urediospores each plot was surrounded by winter rye.