Table 2.
Effects of hypergravity on the morphology of metaxylem elements in the apical region of arabidopsis inflorescence stems
| 1 g |
300 g |
||||
|---|---|---|---|---|---|
| Mean ± s.e. | n | Mean ± s.e. | n | Probability P | |
| Number of xylem elements (per xylem) | 2·20 ± 0·25 | 40 | 3·30 ± 0·43 | 50 | = 0·048 |
| Cross-section area of the elements (µm2) | 25·38 ± 1·24 | 86 | 54·93 ± 3·94 | 166 | < 0·0001 |
| Apparent thickness of the secondary thickenings (µm) | 0·70 ± 0·01 | 86 | 0·87 ± 0·03 | 166 | < 0·001 |
The number of plants analysed was 9–10, which is the sum of the number of plants examined in two separate experiments.