Table 2 Eigenvectors and contribution rates of principal components in calcium stress experiments
Indices | Principal component 1 | Principal component 2 | Principal component 3 | Principal component 4 |
|---|---|---|---|---|
germination rate | 0.08 | 0.00 | 0.06 | 0.01 |
germination potential | 0.08 | -0.01 | 0.05 | 0.06 |
germination index | 0.07 | -0.05 | 0.00 | 0.05 |
vitality index | 0.06 | -0.07 | 0.04 | -0.21 |
root length | 0.06 | -0.06 | -0.05 | 0.28 |
bud length | 0.04 | 0.1 | 0.00 | 0.17 |
dry weight | -0.01 | -0.07 | 0.2 | 0.18 |
relative water content | 0.02 | 0.11 | -0.09 | 0.14 |
MDA | -0.06 | -0.02 | 0.05 | 0.4 |
POD | 0.03 | 0.08 | 0.11 | 0.33 |
CAT | 0.00 | 0.1 | 0.12 | 0.05 |
SOD | -0.05 | 0.01 | 0.12 | -0.07 |
Pro | -0.03 | -0.1 | -0.02 | 0.39 |
soluble sugar | 0.00 | 0.00 | 0.23 | -0.2 |
Eigenvalues | 5.297 | 3.943 | 2.567 | 1.215 |
Contribution rate (%) | 37.834 | 28.163 | 18.335 | 8.682 |
Cumulative contribution rate (%) | 37.834 | 65.997 | 84.331 | 93.013 |
weights | 0.4068 | 0.3028 | 0.1971 | 0.0933 |