Figure 1. Morphological parameters of annual ryegrass seedlings grown under different nitrogen and salt conditions.

Morphological parameters of annual ryegrass seedlings grown under different nitrogen and salt conditions. The seeds of annual ryegrass were cultured in soil for one month, and the seedlings cut to the same height were then transferred into different nitrogen level (2.0, 5.0, 10 mM) under NaCl (0, 50, 100 mM) stress in a hydroponic culture. After being grown for 10 days, the plant height and biomass were measured. (A–C) Images of seedlings at 10 days after transferred. (D) Plant height at 10 days after transferred. (E) The relative change of biomass (% of biomass which was measured before treatment). Different letters above the columns indicate significant differences at P < 0.05 by Student’s t–test.