Analysis of activity of nitrogen metabolism enzymes on grain yield and content of soluble proteins in soybean

Abstract

Field and laboratory tests were performed in 1995 in order to find out the effect of interdependance of enzyme activity of nitrogen metabolism on grain yield and content of soluble proteins in soybean. The activities of all three tested enzymes (nitrogenase, NG; nitrate reductase, NR and glutamate dehydrogenase, GDH) were in negative correlation with grain yield and in positive correlation with the content of soluble proteins. Path coefficient analysis showed that direct effect of NG activity was positive when compared to both tested characteristics, while the direct effects of NR and GDH were negative.