Plant Diversity ›› 2007, Vol. 29 ›› Issue (04): 441-443.

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Karyotype of the Two Species of Genus Dieffenbachia (Araceae)

CHEN Ai-Kui , ZHUANG Mei-Yan , HUANG Ming-Hua   

  1. Dept . of Biology , Guangdong Education Institute , Guangzhou 510303 , China
  • Received:2006-11-26 Online:2007-08-25 Published:2007-08-25
  • Contact: CHEN Ai-Kui

Abstract: This paper investigates the chromosome numbers and karyotypes of two species of Dieffenbachia . The result shows that the karyotype formula of D. daguensis is K (2n ) = 2x = 34 = 12m + 18sm+ 4st , which is of 3B type with As·K% = 66.52% ; the karyotype formula of D. maculata is K (2n ) = 2x = 34 = 2M+ 28m + 4sm, which is of 1B type withAS·K% = 55.38% . Compared with the more advanced members in Typhonium and Sauromatu, the karyotype of Dieffenbachia is rather primitive, and the karyotypes of Araceae are rather diverse .

Key words: Dieffenbachia daguensis

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