3.6 | Correlation of soil enzyme activity and polysaccharide content with the seedling weight
The polysaccharide content in the culture medium showed a significant positive correlation with the fresh weight of S. miltiorrhizaseedlings and the fresh weight of their aboveground or underground parts (p <0.05). Additionally, S-NR and S-PT were found to have an extremely significant negative correlation with the root-shoot ratio (p <0.001), while S-NiR had a significant positive correlation with the same ratio (p <0.05). Furthermore, S-UE had a significant positive correlation with S-NR and S-PT, whereas S-NiR had a significant negative correlation with S-NR (p <0.05) (Figure 6). These findings suggest that the release of polysaccharides from the root system into the environment is closely related to the growth and developmental status of the plant.