Table 1.
Estimated levels of FAs and oil content and interaction between the factors CO 2 , T and O 3 (all according to Eqn (1)). A P-value less than 0.05 for interaction between CO2 and T, and between (CO2,T) and O3 indicates that factors interact and additivity cannot be assumed.
| FA | Treatment mg (100mg)–1 seeds, (95% confidence intervals), P-values for difference from ambient treatment |
P-value for interaction between CO2 and T |
P-value for interaction between (CO2,T) and O3 |
|||||
|---|---|---|---|---|---|---|---|---|
| Ambient | CO2 | T | O3 | CO2+T | CO2+T+O3 | |||
| C16:0 | 1.78 (1.69, 1.88) — |
1.73 (1.63, 1.82) P=0.09 |
1.51 (1.43, 1.60) P<0.0001 |
1.58 (1.50, 1.67) P<0.0001 |
1.61 (1.52, 1.70) P<0.0001 |
1.70 (1.65, 1.75) P=0.01 |
0.0008 | <0.0001 |
| C18:0 | 0.47 (0.42, 0.53) — |
0.51 (0.45, 0.57) P=0.005 |
0.44 (0.39, 0.50) P=0.008 |
0.45 (0.40, 0.51) P=0.18 |
0.48 (0.42, 0.54) P=0.91 |
0.52 (0.46, 0.59) P=0.005 |
0.58 | 0.009 |
| C18:1 | 26.31 (24.52, 28.19) — |
25.57 (23.83, 27.40) P=0.17 |
23.35 (21.76, 25.02) P<0.0001 |
22.70 (20.92, 24.58) P<0.0001 |
26.01 (24.25, 27.88) P=0.59 |
27.93 (26.02, 29.93) P=0.004 |
<0.0001 | <0.0001 |
| C18:2 | 8.82 (7.90, 9.83) — |
8.49 (7.60, 9.46) P=0.03 |
7.30 (6.53, 8.13) P<0.0001 |
8.08 (7.22, 9.01) P=0.0002 |
7.02 (6.28, 7:82) P<0.0001 |
7.82 (6.99, 8.73) P<0.0001 |
0.22 | <0.0001 |
| C18:3 | 4.42 (4.05, 4.83) — |
4.39 (4.02, 4.79) P=0.76 |
2.45 (2.24, 2.67) P<0.0001 |
4.22 (3.85, 4.62) P=0.15 |
2.43 (2.22, 2.65) P<0.0001 |
2.69 (2.45, 2.94) P<0.0001 |
0.11 | 0.004 |
| C20:1 | 0.47 (0.44, 0.50) — |
0.43 (0.40, 0.46) P<0.0001 |
0.36 (0.34, 0.39) P<0.0001 |
0.42 (0.40, 0.46) P<0.0001 |
0.41 (0.38, 0.44) P<0.0001 |
0.40 (0.37, 0.43) P<0.0001 |
<0.0001 | 0.02 |
| Total oil (lipid sum) |
42.49 (39.39, 45.78) — |
41.26 (38.23, 44.45) P=0.08 |
34.51 (31.96, 37.21) P<0.0001 |
37.78 (35.02, 40.70) P<0.0001 |
38.22 (35.43, 41.17) P<0.0001 |
41.06 (38.06, 44.23) P=0.03 |
<0.0001 | <0.0001 |