| Abstrakt: |
Currently, there is an increased interest in obsolete accessions of cultivated species that do not meet modern agronomic requirements. A tetraploid Rivet wheat, which has a common genepool with durum wheat, is among them. Unlike the latter, Rivet wheat has so far been little involved in genetic and molecular research. Technological properties of grain, which determine its end-use, are characterized especially weakly and fragmentarily. The purpose of this study was to evaluate a diversity among six accessions of Rivet wheat from the collection of Gatersleben genebank (IPK, Germany) for these and other economically important traits. Milling parameters of grain, gluten content and quality, and physical properties of dough were investigated. All characteristics, except flour particles diameter had a substantial variability. The difference for thousand kernel weight was 12 g, and for gluten content −8%. The total grain vitreousness was in the range of 48–82%. Gluten, in general, had a low extensibility. One of the samples showed a high elasticity of dough and high flour strength according to alveograph. Gluten darkening during washing may indicate a variability in the activity of polyphenoloxidases. The samples also differed in yield components; in particular, the difference in grain weight per spike was twofold. The difference in flowering time reached 10 days. The variety in grain quality indicates the possibility of using Rivet wheat for a wider range of flour products compared to durum wheat. The obtained phenotypic data allow the purposeful use of Rivet wheat samples both in agricultural production and in scientific research. [ABSTRACT FROM AUTHOR] |
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