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| Influence of residual roots on growth of Panax notoginseng |
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| DOI：10.16768/j.issn.1004-874X.2017.06.005 |
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| Abstract: |
| In order to analyze of the effects of residual roots decomposed on growth of two-year-old Panax
notoginseng，the fibrous roots were added in the pot experiment and hydroponic experiment. The morphological
index and enzyme activity were measured timely. The results showed that the number of fibrous root decreased with
the increase of residual root addition in potted treatment for 30 days and hydroponic conditions for 10 days. The
POD activity was relatively lower in fibrous roots and leaves of P. notoginseng which grew under treatments of pot
experiment and hydroponic experiment without any addition or high proportion to addition of powdery fibrous roots.
The SOD activity in fibrous roots of P. notoginseng which grew under pot condition decreased with the increase
of additive amount of powdery fibrous roots，however，the contrary was found in hydroponic experiment. The root
activity increased in various degrees under the condition of additive amount of powdery fibrous roots greater than 0.5
g/ kg in pot experiment and 1 g/10 L in hydroponic experiment. But the root activity decreased with the increase of
test processing days in all treatments. The results suggested that the release of chemical substances of roots left in
soil in the process of harvesting may be another factor leading to autotoxicity of P. notoginseng. |
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