Abstracts |
The structure of arbuscular mycorrhiza in cultivated and wild Pinellia ternata were observed though staining and microscopic examination, and the infection pattern and dynamic change of the arbuscular mycorrhizal fungi in P. ternata were explored. The results showed that there were typical arbuscular mycorrhiza structures in the roots of P. ternata such as hyphae, arbuscule and vesicles. The types of these arbuscular mycorrhizal structures included Arum-type, Paris-type, chiasma type, etc. The arbuscular mycorrhizal fungi infection changed with seasonal variation that started to rise from early spring, reach the top during summer to August, and then began to decline. The infection rate in wild P. ternata were higher than those in cultivated plants, which suggested the environment around wild P. ternata was better for arbuscular mycorrhizal fungi to grow than that around cultivated plants. It is suggested that these differences might be due to the degradation of cultivated P. ternata. |