Fig. 4
As can be seen from Figure 4b, AsA content increases first and then
decreases with the increase of zinc concentration. At 14 days of
treatment, when the zinc concentration was less than 400 μmol/L, AsA
content increased with the increase of zinc concentration compared with
the control group, and reached the maximum value at the zinc
concentration of 400 μmol/L. When zinc concentration is more than 400
μmol/L, AsA content decreases with the increase of zinc concentration.
After 14 days of zinc treatment, when the zinc concentration was 400
μmol/L, AsA content showed a peak value, and there was a significant
difference between the two groups.
It can be seen from Figure 4c that the content of GSH increases first
and then decreases with the increase of zinc concentration. When zinc
concentration is less than 400μmol/L, GSH content increases with the
increase of zinc treatment time and zinc concentration. When the zinc
concentration is 800 μmol/L, the GSH content has a peak value, and there
is a significant difference for the photographic ratio.
3.3
Effects of different concentrations of exogenous Zinc on medicinal
components of Dendrobium nobile.
It can be seen from Figure 5 that the total polysaccharide content ofDendrobium nobile varies with the zinc treatment concentration.
When the zinc concentration is less than 400 μmol/L, the polysaccharide
content gradually increases with the increase of zinc concentration.
When the zinc concentration was 400μmol/L, it was significantly higher
than the control, and when the zinc treatment time was 7 days, the
content of polysaccharide reached the maximum. When the zinc
concentration is more than 400 μmol/L, the content of polysaccharide
decreases with the increase of zinc concentration.