TABLE 3.

Correlation coefficients between the DNA methylation levels and phenotypic parameters of P. nigra N46 regenerated plants of five generations.

	POD	SOD	Total chlorophyll	Pn	Gs	Ci	Tr	WUE	Height	Basal diameter
Total methylation level (%)	−0.549*	−0.258	0.810†	0.810†	0.427	−0.405	0.664†	−0.756†	−0.292	0.412
Fully methylation level (%)	−0.553*	−0.192	0.766†	0.766†	0.488*	−0.342	0.685†	−0.594†	−0.220	0.525*
Hemi-methylation level (%)	−0.498*	−0.288	0.775†	0.775†	0.340	−0.345	0.589†	−0.821†	−0.342	0.286

*P < 0.05, ^†P < 0.01.