Table 1.
Double bond index (DBI) and ratio between polyunsaturated and saturated fatty acid (PUFA/SFA) for polar lipid fraction (PF), diacylglycerides (DAG), triacylglycerides (TAG) and free fatty acids (FFA) in oat genotypes Flega (susceptible) and Patones (tolerant) during a time course of increasing water stress at 9, 12, 15, and 18 days after withholding water (daww).
| Genotype | daww | PF | DAG | TAG | FFA |
|---|---|---|---|---|---|
| Double Bond Index (DBI) compared to watered controls | |||||
| Flega | 9 | 99,6 ± 0.6 | 79,6 ± 17.5 | 98,3 ± 1.4 | 133,5 ± 0.03∗ |
| 12 | 99,8 ± 0.7 | 75,3 ± 8.0∗ | 91,3 ± 12.9 | 96,5 ± 1.3 | |
| 15 | 97,3 ± 0.1∗∗ | 93.3 ± 24.7 | 128,8 ± 1.3∗ | 100,9 ± 8.4 | |
| 18 | 91,9 ± 3.5∗ | 74,0 ± 10.0∗ | 91,7 ± 7.1 | 70,1 ± 11.5 | |
| Patones | 9 | 99,9 ± 0.6 | 146,6 ± 7.3∗ | 89,9 ± 14.6 | 153,3 ± 5.8∗ |
| 12 | 101,5 ± 0.3 | 113,0 ± 9.8 | 106,2 ± 0.8∗ | 117,2 ± 9.8 | |
| 15 | 101,0 ± 0.6 | 101,5 ± 14.4 | 115,3 ± 0.4∗∗ | 103,5 ± 8.7 | |
| 18 | 94,1 ± 1.7∗ | 233,5 ± 16.4∗∗ | 103,2 ± 3.9 | 177,5 ± 23.8∗ | |
| lsd | 3.194 | 42.2 | 15.63 | 25.64 | |
| PUFA/SFA | |||||
| Flega | 9 | 101,3 ± 4.3 | 108,1 ± 33.8 | 71.68 ± 1.31∗ | 142,3 ± 56.1 |
| 12 | 101,6 ± 4.8 | 93,3 ± 27.4 | 110,3 ± 23.8 | 83,8 ± 5.35∗∗ | |
| 15 | 85,1 ± 2.5∗∗ | 119,1 ± 42.8 | 197,0 ± 4.2∗∗ | 184,77 ± 29.62 | |
| 18 | 72,6 ± 9.9∗ | 40,1 ± 7.7∗∗ | 75,0 ± 16.7 | 125,99 ± 35.4 | |
| Patones | 9 | 100,1 ± 3.0 | 166,6 ± 10.2∗ | 105.62 ± 3.6 | 135,6 ± 19.0∗ |
| 12 | 109,5 ± 2.5 | 147,0 ± 27.4∗ | 156,3 ± 11.2∗∗ | 127,7 ± 33.9 | |
| 15 | 99,1 ± 2.9 | 116,1 ± 17.3 | 134,8 ± 0.2∗ | 99,5 ± 4.0 | |
| 18 | 82,5 ± 5.6∗ | 235.4 ± 50.7∗∗ | 126,3 ± 12.8 | 250,5 ± 48.1∗ | |
| lsd | 11.59 | 44.0 | 57.7 | 53.9 | |
Data are mean of 4 replications ± standard error. ∗ and ∗∗ indicate significant differences at P < 0.05 and 0.01, respectively, respect to their well-watered controls. l.s.d for P < 0.05 is also given for other comparisons within the table.