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Correlation analysis between the nucleotide compositions and the two principal component axes in PEDV genomes.
| Base composition | Axis1 | Axis2 |
| A | –0.001 | –0.173 |
| U | 0.389** | 0.061 |
| G | −0.892** | –0.033 |
| C | 0.199 | –0.010 |
| GC | −0.541** | 0.007 |
| A3s | 0.828** | 0.005 |
| U3s | 0.481** | 0.184 |
| G3s | −0.891** | –0.123 |
| C3s | –0.228 | –0.203 |
| GC3s | −0.700** | –0.206 |
| ENC | –0.117 | –0.046 |
The numbers in each column represent correlation coefficient “r” values, which are calculated in each correlation analysis.
“**” means P < 0.01.
