| Summary: | Productivity and parameters of intensity and stability of spring barley varieties The article presents the study results of the promising spring barley varieties approved to use in the 10th region (West-Siberian) due to their high productivity and stability shown during the trials under two contrast climate zones of the Tyumen region. The variability of the duration of the vegetation period was average; the plant height was medium in the zone of pod-taiga and low in the southern forestry steppe area. The trait ‘1000-seed weight’ slightly varied and didn’t depend on the nature-climate zone. The variety ‘Vorsinsky 2’ turned to be the best one in average productivity independent from the nature-climate zone. The average productivity of the most varieties grown in different areas does not coincide, and that shows dependence between a genotype and environment. The changeability of productivity has been determined as strong irrespective of the nature-climate zone. According to the intensity there have been formed three groups of varieties: extensive, half-intensive and intensive. Irrespectively of the nature-climate zone all varieties of spring barley are characterized with medium indexes of stability. The largest index of the genotype effect has been shown by the varieties ‘Vorsinsky 2’ (pod-taiga, southern forestry-steppe), ‘Abalak’ (pod-taiga) and ‘Salair’ (southern forestry-steppe). According to the complex assessment of productivity and parameters of adaptive ability irrespectively of the nature-climate zone the variety ‘Vorsinsky 2’ has been determined as the best one.
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