Table 1 The nucleotide base frequencies analysis of candidate nucleotide sequences in Orchidaceae plants.

From: The specific DNA barcodes based on chloroplast genes for species identification of Orchidaceae plants

Sequences

Base content

A

T

C

G

GC

AT-1

GC-1

AT-2

GC-2

AT-3

GC-3

matK

30.8

37.8

16.4

15.0

31.4

68.5

31.5

68.9

31.2

68.3

31.7

rbcL

28.0

29.2

18.4

24.5

42.9

62.7

37.3

53.2

46.7

55.4

44.6

ndhF

27.3

39.4

16.1

17.2

33.3

66.9

33.1

64.9

35.1

68.4

31.6

ycf1

40.4

30.0

13.9

15.7

29.6

69.3

30.8

71.8

28.2

60.2

29.8