Plant Diversity ›› 2007, Vol. 29 ›› Issue (01): 38-42.

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Discovery of Triploid Erigeron breviscapus (Compositae) and Its Potential for Breeding

LI Li, DANG Cheng-Lin, HUANG Rui-Fu   

  1. College of Biology and Enviromental Sciences of Jishou University
  • Received:2006-03-08 Online:2007-02-25 Published:2007-02-25
  • Contact: LI Li


The chromosomes number and karyotypes for an important medicinal plant , Erigeron breviscapus ( Vant. ) Hand. -Mazz. , in wild populations from Yunnan were reported in this paper. Two kind of ploidy levels were observed within two populations of the species. (1) Cangshan population: the karyotype formula of the diploid type is 2n = 2x = 18 = 4m+ 10sm+ 4st and 2n = 3x = 27 = 6m + 12sm+ 9st for triploid, (2 ) Yangjiaping population: the karyotype formulaof the diploid type is 2n = 2x= 18 = 6m + 10sm+ 2st and 2n = 3x= 27 = 3m+15sm+9st for triploid. The triploid type of E. breviscapus was discovered for the first time. Morphological characteristics of the triploid individuals suggest that E. breviscapus has a potential for fostering a better breed .

Key words: Erigeron breviscapus

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