Nitrogen uptake and accumulation in organs of maize plants under different phosphorus supply

摘要

The plants were grown by water culture method under 1/2 dose of X-A mixture (control) and under phosphorus content variation in them from 0 to 2 mM. Phosphorus deficit and surplus have been established to make stronger negative influence on nitrogen uptake than on its concentration and accumulation in organs. The greatest nitrogen accumulation in plant organs observed under 2-fold decrease of the dose (to 0.25 mM) as well as its increase (to 1 mM). The increase in nitrate reductase activity of root and organ biomasses growth was found under these conditions too.