Table 1.
Growth of Mi29, IL-AE91, and Zea nicaraguensis plants in aerated or stagnant, deoxygenated nutrient solution
| Genotype | Plant height* (cm) | Shoot dry mass (g) | Root dry mass (g) | Plant height* (cm) | Shoot dry mass (g) | Root dry mass (g) | |
|---|---|---|---|---|---|---|---|
| 7 d | 14 d | ||||||
| Mi29 | Aerated | 53.8±1.5 a | 1.25±0.08 a | 0.34±0.01 a | 66.8±1.0 a | 1.92±0.05 a | 1.01±0.05 a |
| Stagnant | 39.8±1.0 d | 0.82±0.05 c | 0.22±0.01 d | 39.8±1.0 e | 0.57±0.10 f | 0.50±0.02 e | |
| % of aerated | 73 | 66 | 66 | 60 | 30 | 50 | |
| IL-AE91 | Aerated | 53.7±1.4 a | 0.91±0.04 b | 0.35±0.03 a | 64.0±0.9 b | 1.74±0.04 b | 0.87±0.06 b |
| Stagnant | 40.0±1.3 d | 0.77±0.24 d | 0.26±0.03 d | 40.0±1.3 e | 1.03±0.09 e | 0.54±0.03 e | |
| % of aerated | 74 | 84 | 74 | 63 | 59 | 62 | |
| Z. nicaraguensis | Aerated | 46.6±0.7 b | 0.84±0.09 c | 0.33±0.04 b | 58.1±0.3 c | 1.31±0.03 c | 0.76±0.07 c |
| Stagnant | 43.1±0.4 c | 0.73±0.07 d | 0.29±0.05 c | 51.4±0.8 d | 1.16±0.03 d | 0.65±0.06 d | |
| % of aerated | 93 | 87 | 88 | 89 | 88 | 86 |
Aerobically grown plants were either maintained in aerated conditions or transferred to stagnant, deoxygenated conditions for 7 d or 14 d. All data are means (±SD), n=4. Different letters indicate significant differences within each parameter at each time-point as determined using one-way ANOVA and Tukey’s test for multiple comparisons (P<0.05).
* Heights were measured for the same plants throughout the experiment.