Genomics and Applied Biology 2018, Vol.9, No.2, 6-13
9
1.3 Effect of GA3 with different concentrations on root length of
Sophora davidii
In the group treated by GA3 after polishing, compared with the control group treated with distilled water, the root
growth rate of the seeds treated with GA3 was faster. And GA3 with 100 mg/L concentration had the biggest
impact on the growth of roots, the average roots length appeared to 40.67 cm on the 10
th
day (Figure 4).
Figure 4 Root length of
Sophora davidii
after the treatment of GA with different concentrations for different times after polishing
In the group treated by GA3 with no polishing, compared with the group treated by distilled water, GA3 with
different concentration gradients all could make a more positive effect on roots, that is, in the same times, the
roots treated by GA3 could grow better. For example, when the concentration of GA3 was 100 mg/L, the average
root length was 42 cm on the 10
th
day, but only 20 cm in the group treated by distilled water (Figure 5).
Figure 5 Root length of
Sophora davidii
after the treatment of GA with different concentrations for different times without polishing
In the group with sealing treatment, the root of
Sophora davidii
seeds treated by distilled water grew gently, the
length of root was shorter at the same times (Figure 6).
1.4 Effect of GA3 with different concentrations on the activity of
-amylase in
Sophora davidii
seeds
With the increase of GA concentrations, the activity of
-amylase increased first and decreased subsequently, and
the optimal concentration was 200 mg/L, as well as the activity of
-amylase could up to 2.135 mg/(g·min).
Treated by the GA with different concentrations, the activity of
-amylase also increased firstly and decreased
subsequently with the treating time was prolonged. And the activity of
-amylase was highest on the 6
th
day
(Table 2).
