Fig. 2.

Root morphology of wild-type (WT) and osnrt2.4 knockdown lines (r1 and r2). Rice seedlings were grown in a hydroponic system containing 0.1mM N-NO₃⁻ and harvested at 13 days after germination (DAG) at 04.00 h (04) (light start). (a) Morphology of lateral roots; (b) morphology of rice plants (bar = 5 cm); (c) total root length (mm); (d) total number of tips; (e) total root surface area (mm²); (f) total root volume (mm³); (g) total average diameter (mm). Root system was analyzed using the WinRhizo Arabdopsis software. The experiment was performed using four biological replicates for each genotype. Bars indicate the standard error of the mean (n =16). Asterisk (*) indicates statistically significant differences between WT and two mutant lines by the Dunnett’s test (p<0.05)