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Table 2 Number of significant markers associated with 23 traits using two statistical models (Q and Q+K) at different significance levels

From: Association mapping for morphological and physiological traits in Populus simonii

Tratis

Q

   

Q+K

   
 

P< 0.05

P< 0.01

P< 0.001

Padj < 0.05a

P< 0.05

P< 0.01

P< 0.001

q < 0.05b

Morphological traits

LL

11

8

4

4

0

0

0

0

LW

9

7

4

4

0

0

0

0

LL/LW

6

3

3

1

1

1

0

1

LA

12

10

9

8

1

1

0

1

LVL

6

3

3

3

0

0

0

0

LVA

3

3

1

1

0

0

0

0

LBA

9

7

7

6

1

1

1

1

LTN

9

7

4

4

1

1

1

1

LT

13

12

7

7

0

0

0

0

LPL

15

13

12

12

1

1

1

1

IL

16

10

9

9

1

1

1

1

H

9

4

3

3

0

0

0

0

D

11

6

3

3

0

0

0

0

Physiological traits

ChlA

12

10

7

8

2

0

0

0

ChlB

16

11

10

10

2

1

0

0

ChlC

14

11

8

9

2

0

0

0

SAR

4

3

1

1

1

0

0

0

POD

7

5

2

3

0

0

0

0

CAT

4

2

0

0

1

0

0

0

RCR

12

10

7

7

0

0

0

0

MDA

8

5

2

2

2

1

1

1

RRO

5

2

0

0

1

0

0

0

PAL

5

0

0

0

0

0

0

0

Total

216

152

106

105

17

8

5

7

  1. a The adjusted P values were obtained after a 50,000 permutation test, and these markers are shown in Table S4 in Additional file 1
  2. b The false discovery rate (DFR) or q values were obtained with the QVALUE R package, and these markers are shown in Tables 3