AbstractIn a four years' test (1982—1985) it was shown that there are highly significant differences in resistance to seab and seedling blight in wheat. Using a novel approach, that head blight resistance should be measured on stands free of leaf diseases and with a number of isolates with different pathogenicity in the inoculation tests, the rep‐rod Liability of results increased significantly over the levels so far published. The genotype‐ by‐year and the genotype‐by‐isolate interactions remained low. Beside differences in resistance deviations in tolerance were also detected. The best materials that were selected are near to the better spring wheat resistance sources. A tendency for correlation between seedling and head blight resistance was found and the most resistant genotypes in the seedling stage will, with high probability, yield head blight resistant material.It thus became possible to include seedling resistance into the breeding program for head blight resistance, Further evidence for there being an identical genetic basis for resistance toF. graminearumandF. culmorumi
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