Susceptibility of Barleys to Bipolaris sorokiniana Seedling Blight Determined by Disease Scoring and Electrolyte Leakage

Spring (14) and winter (8) barley cultivars were examined for seedling susceptibility (root and coleoptile) to Bipolaris sorokiniana infection under a controlled environment. High susceptibility of all cultivars to root rot was observed, both in winter and spring genotypes, Coleoptile infection on average, was about three times lower than root disease score. Significant membrane injury up to 35% of maximum electrolyte leakage was observed on the 7th day after inoculation. In only 3 cultivars were the membrane injuries low—on the level of 3-6% and related with low coleoptile infection. Resistance of the barley cultivars to B. sorokiniana was not related with their resistance to Fusarium cutmorum