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Table 2 Assessment of average DNA yields, purity and Sequenom iPLEX ® Gold assay assay performance

From: Extraction of high purity genomic DNA from pine for use in a high-throughput Genotyping Platform

Extraction method

Total number of extractions

Average conc. (ng/μL)1

Average yield (ng DNA/mg tissue)

Absorption at 260 nm /230 nm2

% Samples with conc. < 20 ng/μL

% Missing genotypes3

% Loci departing from HWE

% Inaccurate genotypes4

Standard CTAB DNA extractions

S

1927

234 ± 211

39

ND

2

21.4

63.8

1.0

Stage 1: Testing eight methods

C

47

413 ± 34

138

1.6 ± 0.1

0

11.0

10.3

0.1

CE

47

454 ± 22

151

2.0 ± 0.1

0

6.5

13.8

0.3

CQ

47

180 ± 39

60

2.0 ± 0.1

0

5.9

12.1

0.2

CZ

47

232 ± 33

77

2.5 ± 0.1

0

11.0

15.5

0.3

CG

47

80 ± 8

60

2.5 ± 0.5

9

4.2

15.5

0.8

N

44

30 ± 22

60

2.1 ± 0.2

38

7.4

17.2

0.7

F

47

52 ± 49

34

0.9 ± 0.3

30

34.7

13.8

1.8

D

43

35 ± 26

141

1.6 ± 0.4

37

4.6

19.0

1.1

Stage 2: Scaled up test of four methods

SQ

70

165 ± 110

33

2.6 ± 0.5

12

9.0

12.9

0.1

CQ

79

397 ± 32

159

2.3 ± 0.2

0

7.6

12.9

0.1

N96

79

158 ± 63

198

2.2 ± 0.2

0

8.3

6.5

0.0

D+

77

65 ± 12

191

2.9 ± 1.5

0

13.5

6.5

0.2

  1. 1 ± Standard Deviation.
  2. 2 ± Standard Deviation. Note: ideal range for A260/A230 ratios is 1.8 – 2.2.
  3. 3 Fail rates calculated for all samples across all assays.
  4. 4 Inconsistent genotypes across replicate samples.