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Table 4 Analysis of variance (ANOVA) of the influence of temperature, 6-BA and NAA concentration on puerarin, daidzin and daidzein synthesis

From: Tailoring enhanced production and identification of isoflavones in the callus cultures of Pueraria thomsonii Benth and its model verification using response surface methodology (RSM): a combined in vitro and statistical optimization

Source of variation

Puerarin (%)

Daidzin (%)

Daidzein (%)

Sum of squares

df

Mean square

F value

p value

Sum of squares

df

Mean square

F value

p value

Sum of squares

df

Mean square

F value

p value

Model

0.044

6

7.291 × 10−3

52.620

< 0.0001*

0.240

6

0.039

17.840

< 0.0001*

4.817 × 10−3

5

9.634 × 10−4

14.510

< 0.0001*

Residuals

1.801 × 10−3

13

1.386 × 10−4

–

–

0.029

13

2.212 × 10−3

–

–

9.298 × 10−4

14

6.642 × 10−5

–

–

Lack of fit

1.224 × 10−3

8

1.530 × 10−4

1.320

0.3944ns

0.018

8

2.301 × 10−3

1.110

0.4750ns

6.230 × 10−4

9

6.922 × 10−5

1.130

0.4722ns

Pure Error

5.775 × 10−4

5

1.155 × 10−4

–

–

–

5

2.070 × 10−3

–

–

3.068 × 10−4

5

6.137 × 10−5

–

–

  1. *: The correlation between response and predictors in the model is significant; NS: The lack of fit is statistically insignificant