Variability of stem height in wheat (Triticum aestivum L.)

The stem height of wheat has impact on grain yield. Variability of height of wheat stem depends from environment and genetic structure of varieties. The aim of this study was estimation of impact of genetic components and environmental conditions on variability of stem height in 10 genetically divergent wheat varieties. The experiment was set up as a randomised block design in three replications. Obtained results indicated differences in average values of stem height among tested wheat varieties in each year of experiment. In the first year of study, the least stem height had Danica variety (44.87 cm) and the highest stem height had wheat variety Ljubičevka (64.73 cm. In the second year stem height varied between 64.37 cm in Danica variety and 87.97 cm in Šumadija variety. In average for all varieties the height of stem was higher in the second year than in the first year of experiment. Also, in average the value of height of stem was higher in second year than in the first year, in all analysed wheat varieties. The highest height of stem, expressed Šumadija variety in average (87.97 cm) in the second year. The least value of stem height (44.87 cm) in average had Danica variety in the first year of experiment. Based on the results significant differences between the wheat varieties according to stem height was established and impact of genetic factors prevailing compare to impact of environmental factors.