Figure 6.

Plant and nodule growth affected by rhizobial inoculation and salt stress. (a) Nodule number; (b) Plant dry weight; (c) N concentration. Twenty-four-day-old seedlings without (CK) or with rhizobial inoculation were transplanted into nutrient solution under 0 or 0.3 M NaCl treatment. The shoots, roots, and nodules were harvested separately after 40 days of NaCl treatments. A column represents mean value obtained from three biological replicates and bar represents standard error. An individual hydroponics box contained three seedlings was regarded as one biological replicate. The same letter indicates no significant difference at p < 0.05 (Duncan’s test). # indicates the number of nodule.