Abstract:

The seedling reactions of three barley cultivars, one hulless barley cultivar, two candidate hulless barley lines and nine hulless barley genotypes were determined under greenhouse conditions to ten isolates of Drechslera teres f. maculata, the causal agent of spot form of net blotch. Isolates were obtained from Ankara, Çankırı, Eskişehir, Kayseri, Konya and Şanlıurfa provinces. The reactions of the cultivars and hulless cultivar ranged between suscepible-resistant. The reactions of the hulless candidate lines and genotypes ranged between resistant-moderately resistant-moderately susceptible with the exception of Candidate line 8 which showed a moderately susceptible reaction to the 3 isolates. There were differences among the reactions of the cultivars and genotypes to the isolates of the fungus. Isolates showed some differences in pathogenicity for each cultivar. Generally, resistance was found among the hulless barley cultivars and genotypes to Drechslera teres f. maculata. Tomarza isolate was the most virulent isolate.

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