Genetic diversity of genetic resources of winter barley maintained in the genebank in Slovakia
Zakova, M.(Vyskumny Ustav Rastlinnej Vyroby, Piestany (Slovak Republic))E-mail:[email protected] | Benkova, M.
A set of 140 winter barley genetic resources of foreign and domestic origins was tested in 1997-1999 to characterise the variability of the accessions based on agronomic data using multivariate methods. Plant height (PH), weight of 1,000 grains (W), grain number per a spike (SNG), grain uniformity - ratio of front seeds over 2.5 m sieve (GU), vegetation period - sowing/full maturity (VM), and seed yield (Y) were evaluated. The study of matrix interrelationships between different variables showed that the yield is greatly correlated with the traits VM, GU and SNG. High positive correlation was obtained between the GU and W. Negative correlation was found between the SNG and W. Correlations between agronomic traits differed between two- and six-row barley sets. There were genetic differences among varieties, between two- and six-row winter barleys, and between domestic and foreign genotypes.
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