Figure 4
Whole-plant δ13C measurements from mycorrhizal and non-mycorrhizal seedlings of Dendrobium officinale (n = 3 each). Values (mean ± standard error) not followed by the same letter are significantly different at P < 0.05, based on LSD test. (a) derived from 13CO2; and (b) from 13C-labelled glucose. Control, non-inoculated seedlings.