Figure 4.

Effects of ACh and its modulators on the elongation of stems and roots (main + lateral roots) of radish seedlings. The seedlings were cultured in the presence and absence of ACh (1 nM), atropine (10 µM) or neostigmine (10 µM) for 5 d at 25°C in the dark. Vertical bars represent the means ± SD (n = 12). The asterisks indicate a significant difference between in the absence and presence of ACh, atropine or neostigmine at **p < 0.01 and *p < 0.05 by the t-test (n = 12).