Table 5: Summary of correlation between the first two principle axes and nucleotide contents in samples.

Base compositions (43.27%) (33.38%)

A3% NS NS
U3% ** NS
C3% NS **
G3% NS **
GC3% ** *

The number in the table represents as correlation coefficient r value, which is calculated from each correlation analysis. Abbreviation: NS represents as nonsignificant (P > 0.05), *represents P < 0.05, **represents P < 0.01.