|
| Effects of different levels of aluminum on growth of Chinese fir seedlings |
| |
| DOI：10.16768/j.issn.1004-874X.2016.07.008 |
|
| Hits: 1826 |
| Download times: 636 |
| Abstract: |
| Soil pot experiments were conducted to study the effects of aluminum on growth of seedlings of
Chinese fir. The changes in growth indexes，content of leaf chlorophyll and leaf aluminum in seedlings of Chinese
fir at different aluminum concentrations were observed and analyzed statistically. The aluminum concentrations set
up were 0，50，100，150 and 200 mg/kg，respectively. The results showed that both seedling height and biomass
increased initially and then decreased subsequently with the increase of aluminum concentration. The peak value
appeared at the concentration of 50 mg/kg and then decreased with the increase of aluminum concentration. Inhibition
was observed when the aluminum concentration was 150 mg/kg. Root length showed a similar pattern in response to
aluminum except that the peak value appeared at aluminum concentration of 100 mg/kg. A significant decrease in
root length was observed，compared with the control，when the concentration of aluminum reached at 150 mg/kg，
indicating that the root growth was significantly inhibited at this concentration. There was the same change tendency
for chlorophyll content as both the biomass and seedling length under aluminum stress. It also showed that chlorophylla content changed more than chlorophyll b. Aluminum content in leave raised with the increase of aluminum
concentration. However，the change was less at low aluminum concentration and much more at 150 mg/kg. At this
higher concentration，the seedling height，biomass and chlorophyll content were inhibited significantly and the values
were less than the control. |
|
View Full Text
View/Add Comment Download reader |
