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Table 3 Comparisons of sequence divergence and phylogenetic information from variable sites among ITS region of nrDNA and four DNA fragments of chloroplast DNA in Phalaenopsis amabilis species complex

From: Biogeography of the Phalaenopsis amabilis species complex inferred from nuclear and plastid DNAs

DNA region

Length (average)

Average GC content (%)

Nucleotide diversitya (Ï€)

Number of variable sites

Number of informative sitesb

Number of indels

Number of informative indelsc

Tajima’ D d

ITS1

228-233

77.1

0.0078

8

7

6

1

−0.2170

5.8S rDNA

163

65

0

0

0

0

0

-

ITS2

255-257

77.1

0.0039

5

4

1

0

−0.4274

trnH-psbA spacer

918-946

33.3-33.9

0.0035

11

8

5

4

−1.6542

  1. aAverage of percentage pairwise sequence divergences estimated using the Jukes-Cantor model. The same species were sequenced for these six regions
  2. bAt a phylogenetically informative sites, a nucleotide substitution is shared by two or more species
  3. cAt a phylogenetically informative indels, an indel is shared by two or more species
  4. dTajima’s test of neutrality for nucleotide substitution. *Significant, p < 0.05