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Bulletin of Botanical Research ›› 1999, Vol. 19 ›› Issue (3): 298-301.

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SEM EXAMINATION ON SEED COAT OF TRICHOSANTHES AND ITS TAXONOMIC SIGNIFICANCE

Huang Lu-qi1, Yue Chong-xi1, Zheng Jun-hua2, Cheng Jing-rong2   

  1. 1. Institute of Chinese Materia Medica, Academy of Traditional Chinese Medicine, Beijing 100700;
    2. School of Pharmaceutical Sciences, Bejing Medica University, Beijing 100083
  • Received:1998-09-25 Online:1999-09-15 Published:2016-06-14

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Abstract: As seeds play important role in this genus, SEM examination on testa surface of 31 species and 3 varieties has been taken. Four types of the testa surface character have been recognized, type A:reticulate, type B:Wavy C:bee hive-shaped, type D:irregular. The testa examination supports the taxonomical subdivision based on the grass morphology, There is close affinity between sect. foliobracteola and Sect. involucraria on account they all belong to type A ad type B. Subsect. villosae and Subsect. Foliobracteola are distinguished, because the latter belong to type A and type B. The testa character also support the placement of T. truncata C. B. Clarke and T. villosa Bl. in Sect. Foliobracteola.

Key words: Trichosanthes, Seed coats, Scanning Electron Microscope (SEM)