Morphological and Anatomical Characterization of Ecotype Needles of Cedrus atlantica in Morocco

Table 2

Hierarchical analysis of variance based on the needle traits. F statistic value.

	Variance component	F	value
Nl (mm)	Tree within population	3.80	0.01
	Between populations	370.08	0.001
Nh (μm)	Tree within population	0.45	0.72
	Between populations	439.31	0.001
Ct (μm)	Tree within population	13.97	0.001
	Between populations	175.48	0.001
Ew (μm)	Tree within population	219.55	0.001
	Between populations	219.55	0.001
Eh (μm)	Tree within population	7.19	0.001
	Between populations	89.93	0.001
Hh (μm)	Tree within population	4.58	0.001
	Between populations	169.87	0.001
Hw (μm)	Tree within population	4.23	0.001
	Between populations	107.92	0.001
Ht (μm)	Tree within population	2.81	0.03
	Between populations	109.81	0.001
Bw (μm)	Tree within population	247.78	0.001
	Between populations	707.84	0.001
Bh (μm)	Tree within population	219.75	0.001
	Between populations	608.28	0.001
Ce (μm)	Tree within population	2.16	0.09
	Between populations	143.61	0.001
Nc (no)	Tree within population	0.10	0.95
	Between populations	5.03	0.02
Cw (μm)	Tree within population	3.15	0.02
	Between populations	86.41	0.001
Ch (μm)	Tree within population	2.98	0.001
	Between populations	2.98	0.001
Dy (μm)	Tree within population	5.29	0.001
	Between populations	197	0.001

Nl, length of the needle; Nh, height of needle cross-section; Bw, width of vascular bundle including endodermis; Bh, height of vascular bundle including endodermis; Nc, number of resin canals; Cw, width of resin canal; Ch, height of resin canal; Dy, distance between resin canal and vascular bundle; Ct, cuticle thickness; Ew, tangential dimension of the epidermal cell layer; Eh, radial dimension of the epidermal cell layer; Hh, radial dimension of the hypodermal cell; Hw, tangential dimension of the hypodermal cell; Ht, thickness of wall of hypodermis cell; Ce, radial dimension of the endodermal cell layer.