Table 3. Correlation coefficients between antioxidant activity and TPC and TFC of the two Phragmites plants

Factor	ABTS	DPPH	TPC	TFC
ABTS	1
DPPH	0.824**1)	1
TPC	0.567*	0.421*	1
TFC	0.072NS2)	0.423*	−0.123	1

Significant at *p<0.05, **p<0.01, respectively.
NS, not significant.