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

Table 4

Discrimination among sampled populations revealed by partial Wilks’ lambda (λ) and P value for analyzed characters.

	Nl (mm)	Nh (μm)	Ct (μm)	Ew (μm)	Eh (μm)	Hh (μm)	Hw (μm)	Ht (μm)	Bw (μm)	Bh (μm)	Ce (μm)	Nc (No)	Cw (μm)	Ch (μm)	Dy (μm)
λ	0.33	0.44	0.71	0.60	0.80	0.57	0.73	0.95	0.31	0.36	0.72	0.97	0.69	0.70	0.60
value	0.001	0.001	0.001	0.001	0.001	0.001	0.001	0.001	0.001	0.001	0.001	0.020	0.001	0.001	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.