Table 1.

Concentration of 3-hydroxy-β-ionone in growth medium

Position (mm)	Concentration (µM)
10	11.3 ± 1.4
20	5.6 ± 1.1
30	2.1 ± 0.4
40	0.1 ± 0.1

R. pallidifolium was grown on agar MS growth medium for 5 days as shown in Figure 1A and 3-hydroxy-β-ionone was determined as described previously.⁹