Glycine max 에서 질소원 형태에 따른 Nitrate Reductase Activity 에 관한 연구

Studies on nitrate reductase activity to different trogen sources in glycne max

Nitrate reductase activity(nra) were analysed in roots, stems and leaves plants in relation to different nitrogen sources and plastochron ages. Nra in roors and stems of soybean observed no differences in influence the nitrogen sources and plastochron ages, and the values showed to be only 5% of NRA in leaves. On the other hand,NRA in the leaves showed different result to nitrgen sources and plastochron ages. When the plants were less than PI6.0, NRA in leaves had being proportional to the concentration of nitrate and distingush decreased with an increasing plastochron age. At the later stage, upper than PI 8.0, the actvity had not effect to nitrate and plastochron ages. These results indicated that nitrate reduction in soybean was in early leaves.