Skip to main content

Table 2 Onset and duration of circadian cycle phases for fertilized and control stone pine trees

From: Effects of fertilization on radial growth of Pinus pinea explored hourly using dendrometers

Season

Treatment

Cycle phase

Onset

[h:min]

Duration by cycle class

[h:min]

Winter

  

All cycles

Short

Regular

Long

All cycles

  

n = 29

n = 2

n = 23

n = 4

n = 29

Control

1

14:58 ± 0:22

3:30 ± 1:30

9:00 ± 0:43

9:15 ± 2:54

8:39 ± 0:43

2

23:37 ± 0:36

14:30 ± 2:30

13:37 ± 0:51

13:15 ± 4:24

13:37 ± 0:52

3

10:30 ± 2:10

–

8:00 ± 4:01

22:00 ± 11:00

12:40 ± 4:49

Whole

 

18:00 ± 1:00

24:00 ± 0:19

33:30 ± 3:53

24:54 ± 0:53

  

All cycles

Short

Regular

Long

All cycles

  

n = 27

n = 1

n = 21

n = 5

n = 27

Fertilized

1

13:24 ± 0:17

2:00 ± 0:00

6:49 ± 0:38

6:12 ± 1:14

6:31 ± 0:34

2

19:56 ± 0:32

3:00 ± 0:00

7:37 ± 1:07

5:24 ± 2:25

7:02 ± 0:59

3

1:10 ± 1:01

15:00 ± 0:00

11:18 ± 1:07

30:12 ± 8:34

15:34 ± 2:31

Whole

 

20:00 ± 0:00

23:34 ± 0:15

41:48 ± 9:06

26:49 ± 2:06

Spring

  

All cycles

Short

Regular

Long

All cycles

Control

 

n = 29

n = 0

n = 28

n = 1

n = 29

1

12:33 ± 0:15

–

7:26 ± 0:28

9:00 ± 0:00

7:29 ± 0:27

2

20:06 ± 0:17

–

7:44 ± 0:33

5:00 ± 0:00

7:39 ± 0:32

3

3:25 ± 0:44

–

8:54 ± 0:53

15:00 ± 0:00

9:06 ± 0:53

Whole

 

–

23:47 ± 0:16

29:00 ± 0:00

23:58 ± 0:18

  

All cycles

Short

Regular

Long

All cycles

Fertilized

 

n = 23

n = 0

n = 19

n = 4

n = 23

1

11:31 ± 0:17

–

6:22 ± 0:37

6:15 ± 1:02

6:21 ± 0:32

2

17:52 ± 0:29

–

4:32 ± 0:34

4:00 ± 0:24

4:26 ± 0:28

3

22:18 ± 0:30

–

13:16 ± 0:43

48:45 ± 12:06

19:26 ± 3:28

Whole

 

–

24:09 ± 0:22

59:00 ± 11:20

30:13 ± 3:20

Summer

  

All cycles

Short

Regular

Long

All cycles

Control

 

n = 27

n = 1

n = 26

n = 0

n = 27

1

11:38 ± 0:12

4:00 ± 0:00

8:51 ± 0:26

–

8:40 ± 0:28

2

20:18 ± 0:20

14:00 ± 0:00

11:14 ± 0:32

–

11:20 ± 0:31

3

6:27 ± 0:41

2:00 ± 0:00

5:32 ± 0:48

–

5:21 ± 0:47

Whole

 

20:00 ± 0:00

24:07 ± 0:15

–

23:58 ± 0:17

  

All cycles

Short

Regular

Long

All cycles

Fertilized

 

n = 27

n = 2

n = 22

n = 3

n = 27

1

10:56 ± 0:31

4:00 ± 0:00

8:22 ± 0:40

11:20 ± 1:46

8:22 ± 0:39

2

19:18 ± 0:28

4:30 ± 0:30

8:49 ± 0:29

9:20 ± 2:54

8:33 ± 0:32

3

3:51 ± 0:29

9:30 ± 0:30

6:25 ± 0:49

10:20 ± 2:02

7:04 ± 0:44

Whole

 

18:00 ± 1:00

23:35 ± 0:30

31:00 ± 1:00

24:00 ± 0:42

Autumn

  

All cycles

Short

Regular

Long

All cycles

Control

 

n = 28

n = 1

n = 28

n = 1

n = 29

1

13:24 ± 0:15

7:00 ± 0:00

7:56 ± 0:26

9:00 ± 0:00

7:56 ± 0:24

2

21:20 ± 0:23

13:00 ± 0:00

15:21 ± 0:33

19:00 ± 0:00

15:24 ± 0:32

3

6:40 ± 2:36

–

7:20 ± 2:20

–

7:20 ± 2:20

Whole

 

20:00 ± 0:00

24:04 ± 0:16

28:00 ± 0:00

24:04 ± 0:19

  

All cycles

Short

Regular

Long

All cycles

Fertilized

 

n = 30

n = 3

n = 23

n = 4

n = 30

1

12:16 ± 0:27

6:00 ± 1:00

7:34 ± 0:52

15:00 ± 1:05

8:24 ± 0:50

2

20:40 ± 0:38

11:20 ± 1:27

15:18 ± 0:58

11:45 ± 2:22

14:26 ± 0:51

3

3:15 ± 1:07

-

10:20 ± 2:11

8:00 ± 0:00

9:45 ± 1:39

Whole

 

17:20 ± 0:40

24:13 ± 0:22

28:45 ± 0:29

24:08 ± 0:35

  1. n number of circadian cycles. Circadian cycles are classified according to cycle length (short, regular, long)
  2. One month of winter (August), spring (November), summer (February) and autumn (May) was studied