Abstract:

The sand culture system was used to study P, Fe-deficiency on the parameters of root architecture and activity of Rosa Rugosa young seedlings. The results showed that the total root length, tips, surface area, volume, diameter and fractal dimension of root of Rosa Rugosa young seedling increased obviously; the root activity decreased significantly. Under P-deficiency condition, the primary root of Rosa Rugosa young seedlings was controlled. Under the condition of P-deficiency, the primary root length increased, and the length and number of second lateral root increased significantly, which were 229.9% and 205.4% more than those of control respectively. The root activity and fractal dimension in Fe-deficiency condition was less than in P-deficiency.