Table 1 The vectors and cumulative contribution of variance of the first four principal components.

From: Discrimination of geographical origin of cultivated Polygala tenuifolia based on multi-element fingerprinting by inductively coupled plasma mass spectrometry

Items

Principal component

1

2

3

4

Ca

0.253

0.820

0.207

0.158

N

0.784

−0.416

0.001

−0.038

K

0.849

−0.038

0.247

−0.134

P

0.098

0.317

0.553

−0.234

Mg

0.415

−0.070

0.261

−0.226

S

0.497

−0.092

−0.471

−0.043

Fe

−0.171

0.275

0.185

0.846

Cl

0.672

−0.312

−0.432

0.178

Na

0.580

−0.550

0.457

0.065

Sr

0.801

0.506

−0.072

−0.132

Mn

0.733

0.030

0.170

0.369

Zn

0.720

0.607

−0.129

−0.019

B

0.506

−0.600

0.371

0.085

Cu

0.762

−0.258

−0.305

0.19

Mo

0.797

0.510

−0.081

−0.137

Variance (%)

38.782

18.330

9.446

7.466

Cumulative variance (%)

38.782

57.113

66.558

74.024

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