Homogeneity and heterogeneity of brewing barley on the level of biochemical markers utilizes for variety identification.

During the breeding, maintenance and cultivation of the varieties of the brewing barley, great emphasis is laid on specific properties and their homogeneity. To this purpose very significant are the biochemical markers (molecules of proteins, enzymes and nuclear acids) that indicate a certain property and the variety pertinence. In this study, for the monitoring of the biochemical markers the varieties Akcent, Forum and Kompakt were used, from the variety tests of 1997. Attention was concentrated on the hordeine and DNA markers and their specifity for the collection of varieties included in the List of Recommended Varieties. It was proved that these markers were proper for the identification of varieties, however, their independent and separate usage does not make possible a completely universal and unambiguous approach to the set of contemporary varieties cultivated in the Czech Republic.During the breeding, maintenance and cultivation of the varieties of the brewing barley, great emphasis is laid on specific properties and their homogeneity. To this purpose very significant are the biochemical markers (molecules of proteins, enzymes and nuclear acids) that indicate a certain property and the variety pertinence. In this study, for the monitoring of the biochemical markers the varieties Akcent, Forum and Kompakt were used, from the variety tests of 1997. Attention was concentrated on the hordeine and DNA markers and their specifity for the collection of varieties included in the List of Recommended Varieties. It was proved that these markers were proper for the identification of varieties, however, their independent and separate usage does not make possible a completely universal and unambiguous approach to the set of contemporary varieties cultivated in the Czech Republic.