Grain quality of hull-less spring barley from different cropping systems
1997
Ehrenbergerova, J. | Zimolka, J. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic)) | Vaculova, K.
Seven new naked lines and two covered varieties as standards of spring barley were investigated. Two cropping systems, conventional and without chemical treatment, were applied. The former included mineral fertilization (50 kg N, 55 kg P2O5 and 55 kg K2O in pure nutrients per hectare) and pesticide application. Two forecrops (root crop - sugar beet and cereal crop winter wheat) were used. After the harvest, grain samples were taken to analyse content of the chemical substances: protein (Kjeldahl), aminoacids (aminoacid analyzer, AAA 881), starch (Ewers), beta-glucans (EBC method), fat (extraction according to Soxhlet) and fatty acids (esterification using an instrument CHROM 5). A genetic factor (varieties and lines) affected all the studied characters highly significantly, while the highest proportion of genetic variability was assessed for oleic and linoleic acid content and beta-glucan content (25 %).
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