Genetic and environmental variation of useful traits in a collection of naked barley II. Quality related traits

Different traits related to grain quality (thousand kernel weight, starch, protein, lysine and beta-glucan contents) have been assessed on 49 naked barley accessions, belonging to six different botanical varieties and originated from three genebanks. The accessions were grown during three consecutive years in the experimental fields of the Institute of Barley at Karnobat, Bulgaria. The relationships existing between the different quality traits were analysed. The effect of climatic factors on the different components of quality was also studied, by considering the variation across years. Accessions were compared by taking into account their origin. Finally, some accessions with high protein, lysine or P-glucan content, were listed to be used in breeding programs.