Effect of La(NO3)3 on seeds vigor of Lespedeza davurica

Lespedeza davurica seeds were soaked in La(NO3)3 solution with concentrations of 100-1 000 g/mL for 48 h to study the seeds vigor, seeds water absorbing rate and membrane permeability. The results showed that the treatment with concentrations of 200-800 g/mL could accelerate germination and improve seeds vigor, relative water intake capacity and membrane permeability of L. davurica. The treatment of 700-800 g/mL La(NO3)3 was the best and beyond 900 g/mL concentrations treatment would inhibit the germination.