Table 1.
Influences of different Mn concentrations on the roots and leaves of soybean.
| Parameters of Soybean Root Growth | Concentrations of Mn (μM) | |
|---|---|---|
| 5 | 100 | |
| Chlorophyll a content | 2.48 ± 0.01 | 2.47 ± 0.038 |
| Chlorophyll b content | 1.72 ± 0.13 | 1.70 ± 0.15 |
| Number of manganese spots on the old leaves | 0 | 31.75 ± 1.21 ** |
| Average diameter of root (mm) | 0.93 ± 0.005 | 0.86 ± 0.034 * |
| Volume of root (cm3) | 37.19 ± 2.81 | 23.38 ± 3.70 ** |
| Surface area of root (cm2) | 1104.10 ± 85 | 694.64 ± 82.07 ** |
| Total length of root (cm) | 4220.04 ± 359.85 | 2821.86 ± 220.87 ** |
| Root tip number | 3204.75 ± 256.38 | 3889.25 ± 814.38 |
Notes: Data were represented by the average value and standard deviation of four times experimental replications. Student’s t-test was used to assess the significance of the difference between the control and Mn toxicity (* p ≤ 0.05, ** p ≤ 0.01).