Spontaneous Hybridization between Pinus mugo and Pinus sylvestris at the Lithuanian Seaside: A Morphological Survey

Table 6

Pearsons product-moment correlation coefficients among the needle traits calculated on the tree mean level (upper diagonal) and the individual needle level (lower diagonal). The significance level and number of observations are given below the coefficients.

Trait	Row no. abaxial (flat)	Row no. adaxial (curved)	Stomata number in row 1	Stomata number in row 2	Mean stomata number	Stomata row index
Row no. abaxial (flat)	1	0.80	0.09	0.09	0.09	0.16
	0	0.0001	0.5696	0.5664	0.5632	0.2875
		47	47	47	47	47
Row no. adaxial (curved)	0.63	1	0.36	0.32	0.34	−0.45
	0.0001	0	0.0128	0.03	0.0181	0.0015
	470		47	47	47	47
Stomata in number row 1	0.09	0.22	1	0.95	0.99	−0.44
	0.0547	0.0001	0	0.0001	0.0001	0.0021
	470	470		47	47	47
Stomata number in row 2	0.08	0.19	0.74	1	0.99	−0.38
	0.0731	0.0001	0.0001	0	0.0001	0.0092
	470	470	470		47	47
Mean stomata number	0.09	0.22	0.94	0.93	1	−0.41
	0.0464	0.0001	0.0001	0.0001	0	0.0039
	470	470	470	470		47
Stomata row index	0.32	−0.51	−0.15	−0.13	−0.15	1
	0.0001	0.0001	0.0008	0.0056	0.001	0
	470	470	470	470	470