Table 3 Principal component analysis results for biochemical traits in 90 F1 progenies from interspecies hybrids of barberry.

From: Biochemical, antioxidant activity, and phenological diversity among Berberis progenies in the F1 population

Eigenvectors

Component

1

2

3

Total anthocyanin content

−0.41

0.52

−0.14

Vitamin C

0.22

0.40

0.35

Total antioxidant activity

0.38

−0.50

0.31

Total phenolic content

0.13

0.24

0.46

Total soluble solids

0.16

0.23

0.53

pH

0.11

0.38

−0.03

Titratable acidity

−0.53

−0.17

0.44

Flavor index

0.56

0.20

−0.28

Eigenvalue

2.21

1.80

1.28

Component degree of significance

**

**

*

Variance (%)

27.56

22.48

15.95

∑Variance (%)

27.56

50.04

65.99

  1. Bold values indicate the characteristics that most influence each PC (Eigenvalues ≥ 0.38). Component degree of significance: * p < 0.05, ** p < 0.01.
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