[Textual research on history of introduction [corrected] and herbal medicine of Pogostemon cablin]

OBJECTIVE

To study the history of introduction and herbal medicine of Pogostemon cablin by textual researches and clarify the confusion in literatures.

METHOD

Textual research on historical literatures, practical applications and field investigation were adopted.

RESULT

The varieties of P. cablin for therapeutic uses were not chaotic, however there has existed confusion between P. cablin and Agastache rugosus in descriptions of appellation, habitat and characteristic of the original plants.

CONCLUSION

It was proved that the term "Huoxiang" in Chinese medicinal works before Ming Dynasty was pointed to P. cablin. The cultivation history of P. cablin in China was traced to Liang Dynasty or before.

[Effect of space flight on ultrastructure of chloroplast in Agastache rugosa]

OBJECTIVE

To substantiate the effects of space condition on medicinal plants, the seeds of Agastache rugosa were set up in retrievable satellites.

METHODS

After returning to earth, the ultrastructural changes of chloroplasts were examined by means of electron microscope.

RESULTS

Vesicles could be seen in the chloroplasts in the cells of earth controlled group, it was few and could not be found in the chloroplasts in the cells of weightless group and hit group. Some chloroplasts were degrading in the cells of weightless group, but this phenomenon was not observed in the cells of the other two groups.

CONCLUSIONS

These results showed that space environment had some effect on the ultrastructure of chloroplasts in Agastache rugosa.