Table 3.
Effect of extending flooding of 1-month-old tomato plants to 9–10 d on adventitious root formation, leaf conductance and PSII operating quantum efficiency (Fv′/Fm′) of the seventh oldest leaf
| Days of treatment |
|||||||
|---|---|---|---|---|---|---|---|
| 3 | 4 | 5 | 6 | 7 | 8 | 9 | |
| Number of adventitious roots | |||||||
| Well-drained | 0 | 0 | 0 | 0 | |||
| Flooded | 3·5 ± 1·9 | 7·3 ± 2·4 | 13·4 ± 2·3 | >20 | |||
| Leaf conductance (mmol m−1 s−1) | |||||||
| Well-drained | 395 ± 46 | 500 ± 43 | 590 ± 36 | >600 | 700 ± 89 | 470 ± 6 | 370 ± 66 |
| Flooded | 61 ± 15 | 70 ± 7 | 90 ± 11 | 100 ± 11 | 100 ± 7 | 90 ± 10 | 110 ± 11 |
| Operating quantum efficiency of PSII (Fq′/Fm′) | |||||||
| Well-drained | 0·480 ± 0·015 | 0·461 ± 0·023* | |||||
| Flooded | 0·266 ± 0·011 | 0·406 ± 0·011* | |||||
Means with s.e. (n = 8 for stomatal conductance and n = 24 for operating quantum efficiency of PSII).
*Measured in the morning on day 10.