Table 4. Correlation coefficients of the indices influencing codon bias in D. grandiflorum cp genome.
| Indices | GC | ENC | GC3s | GC3 | Axis 1 | Axis 2 | Axis 3 | Axis 4 |
|---|---|---|---|---|---|---|---|---|
| GC | 1 | |||||||
| ENC | 0.089 | 1 | ||||||
| GC3s | 0.424** | 0.548** | 1 | |||||
| GC3 | 0.437** | 0.521** | 0.964** | 1 | ||||
| Axis 1 | 0.123 | 0.275 | 0.198 | 0.166 | 1 | |||
| Axis 2 | −0.393** | −0.498** | −0.623** | −0.664** | −0.004 | 1 | ||
| Axis 3 | 0.226 | 0.045 | 0.134 | 0.104 | −0.002 | 0.005 | 1 | |
| Axis 4 | 0.111 | −0.331* | −0.385** | −0.292* | 0.007 | −0.015 | −0.006 | 1 |
Notes.
*
Positive correlation (P < 0.05).
**
Significant positive correlation (P < 0.01).
- GC
- G + C content of the gene
- ENC
- the effective number of codons
- GC3S
- the frequency of the nucleotides G + C at the 3rd of synonymous codons
- GC3
- The G + C content at the 3rd of codons