Table 2.

Results of F-test on examined characters in White poplar clones¹.

Trait	Clone (A)	PEG concentration (B)	Interaction A×B
Shoot fresh weight	3.28*	9.70**	0.65 ns
Shoot dry weight	3.11ns	4.06**	0.96 ns
Root fresh weight	1.69 ns	3.23**	0.95 ns
Root dry weight	1.85 ns	4.28**	1.49 ns
Chlorophyll a	5.42**	61.03**	2.08**
Chlorophyll b	4.14**	48.59**	1.50 ns
Carotenoids	2.56*	27.36**	1.57 ns
Chlorophyll a + b	5.28**	61.86**	1.91**
Total phenolic content	15.04**	4.37**	0.79 ns
Total flavonoids content	5.15**	46.56**	1.75 ns
Ferric reducing antioxidant power	28.18**	4.74**	0.81 ns
ABTS radical scavenging activity	26.74**	14.29**	0.65 ns
DPPH radical scavenging activity	9.98**	16.65**	1.02 ns
Free proline content	256.35**	264.10**	11.87**
Glycine betaine	24.40**	97.55**	8.42**

¹ (ns), non-significant; (*): p<0.05; (**): p<0.01.