Table 2. Principal component analysis (PCA). For trait abbreviations see Table 1.

	Trait	PC 1	PC 2	PC 3	PC 4
	RFW	0.655	-0.082	0.618	0.238
	SFW	0.584	-0.179	-0.144	-0.264
	FRS	-0.050	0.084	0.831	0.469
	RDW	0.734	-0.348	-0.210	0.350
	SDW	0.365	0.244	0.365	-0.677
	DRS	0.483	-0.411	-0.400	0.495
Characteristic vector	SH	0.608	-0.042	-0.132	-0.282
	TFW	0.865	-0.166	0.086	0.024
	TDW	0.815	-0.014	0.094	-0.265
	RL	0.278	0.765	-0.111	0.173
	RD	0.083	-0.362	-0.065	-0.005
	RT	0.294	0.891	-0.170	0.157
	TNOR	0.295	0.891	-0.167	0.154
Eigenvalues		3.720	2.731	1.538	1.400
Contribution %		28.614	21.005	11.831	10.766
Cumulative contribution %		28.614	49.618	61.449	72.215