title: [Study on endogenesis inhibitory substances in seed of Thesium chinense].
abstract: 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.
authors.affiliation: Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Fu-lai
authors.initials: FL
authors.lastname: Luo
authors.forename: Qiao-sheng
authors.initials: QS
authors.lastname: Guo
mesh_terms: 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
chemical_list: D010936:Plant Extracts; D010937:Plant Growth Regulators