Table 2.

Comparisons among the Pairwise Alignments (Colocasia esculenta var. RR taken as a Reference) to Calculate the Correlations between 1) Repeats and Substitutions, 2) Insertion-Deletions (indels) and Substitutions, and 3) Repeats and Indels

Comparison	C. esculenta var. GP	Wolffiella lingulata	Wolffia australiana	Lemna minor	Spirodela polyrhiza
Repeats and substitutions
Correlation between repeats and substitutions (r)	0.245	0.391	0.416	0.424	0.491
Significance of correlation (t)	6.44***	10.81***	11.657***	11.92***	14.37***
Coefficient of determination (r2)	0.060	0.152	0.173	0.180	0.241
Insertion–deletions (indels) and substitutions
Correlation between indels and substitutions (r)	0.391	0.220	0.245	0.323	0.387
Significance of correlation (t)	10.82***	5.75***	6.43***	8.71***	10.69***
Coefficient of determination (r2)	0.153	0.048	0.060	0.105	0.150
Repeats and indels
Correlation between repeats and indels (r)	0.640	0.168	0.178	0.224	0.212
Significance of correlation (t)	21.20***	4.33***	4.59***	5.87***	5.51***
Coefficient of determination (r2)	0.409	0.028	0.032	0.050	0.045

Note.—The alignments compared closely related (var. RR to var. GP) and distantly related (var. RR to W. lingulata, W. australiana, L. minor, and S. polyrhiza) aroid chloroplast genomes. The alignments were partitioned into 651 nonoverlapping bins of 250 bp size each to calculate these correlations.

***All correlations were highly significant at 0.001α and 649 degree of freedom.