Summary
In 1951, a line of the Austrian barley variety Vollkorn (a brewing barley widely grown in Lower Austria) was exposed to X-rays with a view to selecting mildew resistant mutants.
Mildew infection was restricted to X2-ear progenies. In the X3-generation one mutant (indicated No. 3502/53) was found to be resistant to the mildew races A1, B, C, D, F and some other mutants showed a moderate resistance to the races A and B.
Field trials proved that there was a correlation between the susceptibility to mildew and lodging. Mutant lines with high yields (127% of mother line) combined a good mildew resistance with a good resistance to lodging.
The type of resistance induced and its interitance in various mutants is under investigation.
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Additional information
Details of irradiation, infection and selection are given by Hänsel (6).
Dr., Lecturer in Plant Breeding at the University of Agriculture, Vienna, Geneticist and Cereal Breeder at the Probstdorfer Saatzucht Station, N.Ö., Austria.
Director of the Experimental X-ray Station Vienna 9, Alserstrasse 4.
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Hänsel, H., Zakovsky, J. Mildew-resistant barley mutants induced by X-rays. Euphytica 5, 347–352 (1956). https://doi.org/10.1007/BF00038857
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DOI: https://doi.org/10.1007/BF00038857