TABLE 4.

Substrate characteristics of wood samples from parental and triploid willow genotypes and their positive and negative midparent heterosis (MPH%) values for cell wall components.

Genotypes	Wood weight (g/cm)	Acid detergent lignin(%)	Cellulose + cutin (%)	Hemicellulose (%)
Tordis	0.62 ± 0.01	15.18 ± 1.06bc	41.81 ± 2.13a	18.33 ± 0.39b
TH3/12 MPH%	0.82 ± 0.07 14.25	13.89 ± 3.50c –8.01	37.93 ± 3.29ab –1.48	20.32 ± 0.42a 17.73
PP-E7	0.80 ± 0.08	15.02 ± 1.09bc	35.19 ± 0.76b	16.19 ± 0.54d
Tordis	0.62 ± 0.01	15.18 ± 1.06bc	41.81 ± 2.13a	18.33 ± 0.39b
TH17/17 MPH%	0.78 ± 0.05 7.57	18.09 ± 0.25ab 15.59	35.60 ± 2.01a –6.68	18.10 ± 0.36b –2.09
PP-E15	0.83 ± 0.01	16.12 ± 3.03abc	34.49 ± 2.25b	17.13 ± 0.24c
Inger	0.88 ± 0.22	19.17 ± 0.24 a	39.53 ± 3.07 ab	17.19 ± 0.30c
TH21/2 MPH%	0.92 ± 0.30 8.98	14.64 ± 1.64 bc –14.36	38.68 ± 3.81 ab 3.53	16.19 ± 0.14d –3.00
PP-E7	0.80 ± 0.08	15.02 ± 1.09bc	35.19 ± 0.76b	16.19 ± 0.54d

Results are mean ± SD. Values denoted with different letters show significant differences at p ≤ 0.05 (Duncan’s test). Bold values highlight the MPH% and CPH% information.