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GUS histochemical staining of 7‐d‐old vertically grown seedlings following control and oxygen deprivation treatments
| GUS | Gene trap (% total) | Enhancer trap (% total) |
| Undetected before and after oxygen deprivation | 576 (72) | 390 (65) |
| Unaffected by oxygen deprivation | 95 (12) | 121 (20) |
| Decreased by oxygen deprivation | 79 (10) | 74 (12·5) |
| Increased by oxygen deprivation | 50 (6) | 15 (2·5) |
| Total F3 lines screened | 800 | 600 |
