[Study on endogenesis inhibitory substances in seed of Thesium chinense].
OBJECTIVE
To investigate the activity and the location of the endogenesis inhibitory substances in seed of of Thesium chinense.


METHODS
The rough extracts from different concentrations, places and extracting times of T. chinense seeds were prepared and determined by its effect on wheat and Brassica sp seed.


CONCLUSIONS
The extract dramatically inhibited the germentation and the growth of wheat and Brassica sp seed and the inhibitory activity was positively related to the concentration of the extracts. When the concentration reached 0. 32 g mL(-1), wheat seed did not germentate. With increasing the extracting times, the inhibitory activity first decreased, then increased. The capsule and kernel both had inhibitory substances and the latter was stronger than the former. Highly active inhibitory substances were found first time in the seed of T. chinense.
Luo
Fu-lai
FL
Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
Guo
Qiao-sheng
QS
D001937:Brassica / Q000187:drug effects / Q000254:growth & development; D018525:Germination / Q000187:drug effects; D010936:Plant Extracts / Q000302:isolation & purification / Q000494:pharmacology*; D010937:Plant Growth Regulators / Q000302:isolation & purification / Q000494:pharmacology*; D010946:Plants, Medicinal / Q000737:chemistry; D029630:Santalaceae / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry* / Q000254:growth & development; D014908:Triticum / Q000187:drug effects / Q000254:growth & development
D010936:Plant Extracts; D010937:Plant Growth Regulators