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Table 2 Optimal concentration combinations of four trace elements affecting the proliferation of Paenibacillus polymyxa Pp-7250

From: Effect of four trace elements on Paenibacillus polymyxa Pp-7250 proliferation, activity and colonization in ginseng

Test number

Cu2+ (A)

Fe2+ (B)

Zn2+ (C)

Mn2+ (D)

OD600 60 h

 

Results of the orthogonal experiment

 1

1

1

1

1

0.9379

 

 2

1

2

2

2

1.0552

 

 3

1

3

3

3

0.7374

 

 4

2

1

2

3

0.6545

 

 5

2

2

3

1

0.6614

 

 6

2

3

1

2

1.2293

 

 7

3

1

3

2

0.7192

 

 8

3

2

1

3

0.8526

 

 9

3

3

2

1

0.9106

 

 T1

2.7305

2.3116

3.0198

2.5099

7.7581

 

 T2

2.5452

2.5692

2.6203

3.0037

  

 T3

2.4824

2.8773

2.1180

2.2445

  

 The average k1

0.9102

0.7705

1.0066

0.8366

  

 k2

0.8484

0.8564

0.8734

1.0012

  

 k3

0.8275

0.9591

0.7060

0.7482

  

 R value

0.0827

0.1886

0.3006

0.2530

  
 

SS

df

MS

F

F0.05(2,2)

Significant

Variance analysis

 A

0.0111

2

0.0056

56.0000

19.0000

*

 B

0.0534

2

0.0267

267.0000

 

**

 C

0.1361

2

0.0681

681.0000

 

****

 D

0.0989

2

0.0495

495.0000

 

***

 Error

0.0001

2

   Â