The interdependence of productive and technological traits in two-rowed spring barley

Abstract

 Five two-rowed spring barley cultivars were studied at the Small Grains Research Centre in Kragujevac over a three-year period. Three planting densities, of 300, 400 and 500 germinating grains m^-2, were chosen. The rates of 30 and 60 kg ha^-1 N were applied in nitrogen fertilisation of plants and the control variant without fertilisation was used. Eight parameters were analysed, being as follows: plant number per m^-2, spike number per m^-2 , spike length (cm), grain number per spike, grain weight per spike (g), grain yield (kg), first-class grain content (%) and protein content (%).

Highly significant positive correlation was determined between the plant number, on the one side, and the spike number and grain protein content, on the other. Highly significant positive correlations were established between the grain weight per spike and the grain number per spike, between the spike length and the first-class grain content, as well as between the spike number and the protein content in the grain. A significant positive correlation effect was determined between the spike length and the grain number per spike, and the grain yield was significantly positively correlated with the spike number and significantly negatively correlated with the spike length and the first-class grain content.

The plant number and spike number were highly negatively correlated with the spike length and the first-class grain content and significantly negative correlation was determined between the grain protein content and the first-class grain content and the spike length.