Transverse shrinkage variations within tree stems of Melia azedarach planted in northern Vietnam

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 7 Variance components for tangential shrinkage (α_T), radial shrinkage (α_R), and tangential/radial shrinkage ratio (α_T/α_R) of Melia azedarach

Source of variation	df	α _T		α _R		α _T/α_R
Source of variation	df	p value	Var%	p value	Var%	p value	Var%
Site (S)	1	0.001	15.39	0.001	13.93	0.017	3.17
Height level (L)	4	0.163	3.64	0.712	1.20	0.092	4.43
L × S	4	0.087	3.91	0.888	0.59	0.069	4.55
Radial position (P)	2	0.001	42.38	0.001	45.54	0.001	16.27
P × S	2	0.289	0.57	0.229	0.70	0.209	1.38
P × L	8	0.863	0.89	0.957	0.61	0.552	3.00
P × L × S	8	0.508	1.55	0.375	2.05	0.858	1.73
Residuals	150		31.67		35.38		65.47