Figure 6

The area and number of root secretory canals of HBZ and QBZ (A Area of root secretory canals; B Number of root secretory tracts, Data are means ± SD; *p < 0.05; **p < 0.001).

The area and number of root secretory canals of HBZ and QBZ (A Area of root secretory canals; B Number of root secretory tracts, Data are means ± SD; *p < 0.05; **p < 0.001).