Figure 7. The relationships between initial Rubisco activity and (a) the ratio of mesophyll conductance (g_m) to Rubisco content, and (b) the ratio of total conductance (g_t) to Rubisco content on Shanyou 63 (solid cycles) and Yangdao 6 (open cycles).

The lines represent the following regressions: (a) y = 0.39x−0.89 R² = 0.93 P<0.01; (b) y = 0.54x−0.25 R² = 0.80 P<0.05.