Table II.
Plant growth, leaf chlorophyll contents, and Zn accumulation in shoots of tobacco grown under three conditions (culture conditions detailed in Table I)
Each value is the mean of three measurements on three different plants plus or minus the sd.
| Chlorophyll Contents
|
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Treatment | Height of Shoot
|
Root Length
|
2 Weeks
|
5 Weeks
|
Zn Accumulation in Shoot
|
||||||
| 2 Weeks | 5 Weeks | 2 Weeks | 5 Weeks | Chlorophyll a | Chlorophyll b | Chlorophyll a | Chlorophyll b | 24 h | 2 Weeks | 5 Weeks | |
| cm | cm | mg g−1 FW | μg g−1 DW | ||||||||
| Control | 7.48 ± 0.46 | 11.3 ± 1.82 | 9.6 ± 1.6 | 20.4 ± 0.9 | 1.18 ± 0.211 | 0.34 ± 0.060 | 0.94 ± 0.049 | 0.29 ± 0.038 | 21.5 ± 3.5 | 36.2 ± 6.4 | 50.8 ± 9.3 |
| Zn | 2.46 ± 0.23 | 4.31 ± 0.37 | 6.2 ± 1.6 | 6.4 ± 1.0 | 0.67 ± 0.055 | 0.22 ± 0.031 | 0.26 ± 0.028 | 0.08 ± 0.008 | 326.4 ± 33.5 | 1,511.7 ± 31.6 | 2,309.0 ± 526.5 |
| Zn + Ca | 4.26 ± 0.37 | 6.37 ± 0.67 | 8.9 ± 1.0 | 10.0 ± 0.7 | 0.66 ± 0.103 | 0.21 ± 0.040 | 0.33 ± 0.063 | 0.10 ± 0.022 | 175.7 ± 28.2 | 2,783.9 ± 107.6 | 2,398.4 ± 182.4 |