Control
|
Exp.
|
Treatment 1
|
% 15N (N)
|
% 13C (N)
|
% Both isotopes (N)
|
% Neither isotope (N)
|
N
|
G-test 15N vs 13C
|
---|
|
1
|
1
|
65 (13)
|
20 (4)
|
15 (3)
|
0 (0)
|
20
|
3.62
|
|
2
|
1
|
60 (12)
|
10 (2)
|
30 (6)
|
0 (0)
|
20
|
3.95*
|
|
3
|
1
|
25 (5)
|
60 (12)
|
10 (2)
|
5 (1)
|
20
|
2.38
|
|
4
|
1
|
45 (9)
|
45 (9)
|
0 (0)
|
10 (2)
|
20
|
0
|
| |
average
|
n/a
|
n/a
|
14 ± 6
|
4 ± 2
| |
n/a
|
70 Gy
|
Exp.
|
Treatments 2–3
|
% Irrad. (N)
|
% Un-irrad. (N)
|
% Both isotopes (N)
|
% Neither isotope (N)
|
N
|
G-tests 70 vs 0 Gy
|
|
1
|
2 15N
|
35 (7)
|
35 (7)
|
30 (6)
|
0 (0)
|
20
|
0
|
|
1
|
3 13C
|
15 (3)
|
65 (13)
|
20 (4)
|
0 (0)
|
20
|
4.30*
|
|
3
|
2 15N
|
15 (3)
|
65 (13)
|
0 (0)
|
20 (4)
|
20
|
6.74**
|
|
3
|
3 13C
|
35 (7)
|
55 (11)
|
10 (2)
|
0 (0)
|
20
|
0.73
|
| |
average
|
25 ± 6
|
55 ± 7
|
15 ± 6
|
5 ± 5
| |
6.63*
|
120 Gy
|
Exp.
|
Treatments 2–3
|
% Irrad. (N)
|
% Un-irrad. (N)
|
% Both isotopes (N)
|
% Neither isotope (N)
|
N
|
G-tests 120 vs 0 Gy
|
|
2
|
2 15N
|
18 (3)
|
65 (11)
|
18 (3)
|
0 (0)
|
17
|
3.29
|
|
2
|
3 13C
|
42 (8)
|
53 (10)
|
5 (1)
|
0 (0)
|
19
|
0.20
|
|
4
|
2 15N
|
0 (0)
|
95 (19)
|
5 (1)
|
0 (0)
|
20
|
21.07**
|
|
4
|
3 13C
|
30 (6)
|
65 (13)
|
5 (1)
|
0 (0)
|
20
|
2.38
|
| |
average
|
n/a
|
n/a
|
8 ± 3
|
0
| |
n/a
|
- n/a: not applicable (replicates could not be grouped based on G-test results)