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Table 1 The effect of different SD treatments on bud set in indoor and outdoor conditions measured on August 26

From: Short-day photoperiods affect expression of genes related to dormancy and freezing tolerance in Norway spruce seedlings

Pairwise comparison of treatment

Indoors

Chi-square test p value

Outdoors

Chi-square test p value

Bud

No bud

Bud

No bud

Control

4

40

<0.001

5

39

<0.001

SD 7

41

3

40

4

 

Control

4

40

<0.001

5

39

0.156

SD 14

32

12

 

10

34

 

Control

4

40

0.080

5

39

0.006

SD 21

10

34

 

16

28

 

Control

4

40

0.398

5

39

0.725

SD 28

2

42

 

4

40

 

SD 7

41

3

0.011

40

4

<0.001

SD 14

32

12

 

10

34

 

SD 7

41

3

<0.001

40

4

<0.001

SD 21

10

34

 

16

28

 

SD 7

41

3

<0.001

40

4

<0.001

SD 28

2

42

 

4

40

 
  1. Bud set had occurred if a small or large visible bud was detected (category S2, see “Materials and methods”). Pairwise comparisons were performed using a χ2-test. Significant differences at the ≤0.05 level are marked in italics. N = 44 seedlings