. 2026 Jun 14;59:49. doi: 10.1186/s40659-026-00708-8

Table 7.

Eigenvalues of the principal component axes from the PCA of pomological, morphological, and biochemical variables in the studied sour orange genotypes

Eigenvectors	Component
Eigenvectors	1	2	3	4	5
Fruit weight	0.37^a	0.18	0.13	0.18	0.04
Fruit length	0.37^a	0.20	0.03	0.23	0.07
Fruit width	0.37^a	0.19	0.01	0.21	0.08
Epicarp thickness	0.28	0.19	-0.30^a	0.21	-0.20
Mesocarp thickness	−0.07	0.00	−0.56^a	0.35^a	0.31^a
Number of segments	0.32^a	−0.07	0.27	−0.24	0.17
Number of seeds	0.16	0.15	0.00	−0.13	0.70^a
Leaf length	−0.18	0.36^a	0.29	0.00	0.07
Leaf width	−0.08	0.44^a	−0.02	−0.21	0.01
Leaf shape index	−0.15	−0.15	0.48^a	0.31^a	0.01
Leaf area	−0.14	0.42^a	0.11	−0.12	0.04
Petiole length	−0.18	0.39^a	0.12	0.07	−0.12
Petiole width	−0.10	0.38^a	−0.26	−0.17	−0.24
Total phenolic content	−0.34^a	0.01	0.03	0.13	0.20
Total antioxidant capacity	0.21	0.07	0.21	0.30^a	−0.37^a
Total flavonoid content	−0.23	0.10	0.17	0.48^a	0.25
Vitamin C content	−0.22	0.04	−0.15	0.31^a	−0.13
Eigenvalue	5.35	4.55	1.74	1.22	1.16
Component degree of significance	**	**	*	**	*
Variance (%)	31.48	26.75	10.21	7.17	6.83
∑ variance (%)	31.48	58.23	68.44	75.61	82.44

^aBold values indicate the characteristics that most influence each PC (Eigenvalues are significant ≥ 0.30). Component degree of significance: *p < 0.05, **p < 0.01