Plant Diversity ›› 2007, Vol. 29 ›› Issue (02): 193-197.

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Chromosome Number of Bischofia (Euphorbiaceae) and Its Evolutionary Implications

XUE Heng-Gang, ZHOU Song-Dong , WANG Qiang , HE Xing-Jin* * , YU Yan   

  1. College of Life Science, Sichuan University , Chengdu 610064 , China
  • Received:2006-09-27 Online:2007-04-25 Published:2007-04-25
  • Contact: HE Xing-Jin

Abstract: The chromosome numbers and morphology of B. javanica and B. polycarpa were studied . The chromosome numbers of both species are 2n = 196 . The inflorescence is panicled in B. javanica while racemes in B. polycarpa . Combined with the cytological , morphological and ecological data , the basic number and the origin and evolution of polyploidy of the genus were discussed .

Key words: Bischofia