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

Table 3

Statistic description of analyzed characters for populations of C. atlantica: Moudemame (M), Tamrabta (T), Aït Oufella (O), and Aït Ayach (A).

Traits	Mean ± SD				Minimum				Maximum				Variation coefficient
	M	T	O	A	M	T	O	A	M	T	O	A	M	T	O	A
Nl (mm)	^a16.09 ± 1.60	^a15.68 ± 2.05	^b10.77 ± 1.89	^b11.06 ± 1.37	13.00	11.00	7.00	8.00	20.00	22	15.00	15.00	9.96	13.10	17.56	12.40
Nh (μm)	^a771.26 ± 85.23	^a794.66 ± 123.82	^b998.45 ± 194.74	^c1180.11 ± 168.33	600.85	582.22	541.11	96.07	970.32	1268.82	1306.81	1610.75	11.05	15.58	19.50	14.26
Ct (μm)	^a9.36 ± 2.36	^a8.84 ± 2.85	^b12.27 ± 4.02	^c14.25 ± 3.56	2.25	1.00	3.52	4.85	14.14	15.81	21.84	22.09	25.27	32.27	32.74	24.98
Ew (μm)	^a24.71 ± 3.33	^a26.08 ± 4.67	^b31.17 ± 6.88	^c35.56 ± 5.92	17.28	18.60	16.75	23.37	33.49	43.35	48.10	55.84	13.47	17.90	22.06	16.65
Eh (μm)	^a17.73 ± 2.57	^a18.14 ± 4.09	^b20.85 ± 4.21	^c22.55 ± 4.62	11.18	10.85	11.31	13.25	26.41	47.53	35.93	39.00	14.47	22.55	20.21	20.50
Hh (μm)	^a33.30 ± 4.79	^b36.42 ± 4.79	^c44.88 ± 9.85	^c46.55 ± 6.82	23.83	26.11	24.77	29.79	42.93	51.04	70.90	63.45	14.37	13.16	21.96	14.64
Hw (μm)	^a29.44 ± 5.19	^a31.14 ± 5.69	^b37.06 ± 8.20	^b38.77 ± 6.66	13.33	18.56	21.81	24.78	44.28	51.04	56.93	54.93	17.63	18.26	22.11	17.19
Ht (μm)	^a3.19 ± 0.87	^a,b2.93 ± 0.72	^b2.69 ± 0.87	^a3.14 ± 0.85	1.94	1.13	0.97	1.00	6.43	4.93	5.08	5.37	27.40	24.44	32.39	27.18
Bw (μm)	^a324.16 ± 39.74	^a320.94 ± 61.36	^b486.01 ± 125.45	^c587.41 ± 62.67	241.74	241.07	222.31	398.33	422.15	629.13	783.98	732.20	12.26	19.12	25.81	10.67
Bh (μm)	^a293.80 ± 59.15	^a293.65 ± 55.50	^b437.33 ± 111.45	^c525.81 ± 70.46	227.12	221.05	202.83	365.00	377.64	569.29	778.26	672.27	12.11	18.90	25.48	11.25
Ce (μm)	^a38.25 ± 6.41	^a37.72 ± 8.40	^b44.92 ± 11.06	^c51.17 ± 9.66	25.08	21.27	22.20	28.88	61.12	72.92	73.32	77.69	16.75	22.28	24.63	18.87
Nc (no)	^a1.27 ± 0.80	^a1.23 ± 0.72	^a1.24 ± 0.79	^a1.16 ± 0.71	0.00	0.00	0.00	0.00	2.00	2.00	2.00	2.00	63.17	58.76	63.24	61.13
Cw (μm)	^a55.15 ± 12.13	^b70.69 ± 25.03	^c87.15 ± 23.64	^d96.32 ± 27.27	27.70	40.00	35.48	31.41	88.33	208.98	141.88	155.56	22.00	35.40	27.13	28.31
Ch (μm)	^a46.88 ± 11.41	^b61.40 ± 22.47	^a74.07 ± 20.94	^c83.74 ± 24.49	21.84	32.93	32.21	23.56	77.72	184.69	130.94	142.71	24.34	36.60	28.27	29.25
Dy (μm)	^a196.38 ± 45.09	^a183.30 ± 43.44	^b275.48 ± 93.20	^c316.79 ± 79.40	73.90	88.88	80.03	145.72	285.62	319.71	490.47	488.44	22.96	23.70	33.83	25.07

Different letters indicate significant differences between populations at as revealed by Tukey’s multiple comparison post hoc test; n = 100 needles for each population. 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.