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ACTA HORTICULTURAE SINICA ›› 2005, Vol. 32 ›› Issue (5): 798-801.

• 研究论文 • Previous Articles     Next Articles

Karyotypes of Different Strains in Ziziphus jujuba Mill. ‘Zanhuang Dazao’

Peng Jianying;Liu Ping;Zhou Junyi;Peng Shiqi;Cao Qingguo;Chu Xinfang   

  1. (1College of Horticulture, Agricultural University of Hebei, Baoding 071001, China; 2 Forestry Bureau of Zanhuang County,Zanhuang 051230, China)
  • Received:2004-11-02 Revised:2005-01-31 Online:2005-10-25 Published:2005-10-25

Abstract: The karyotypes of 42 strains of Ziziphus jujuba Mill. ‘ZanhuangDazao’ randomly sampled in its original location based on geography and morphology were analyzed. The results showed that all the strains examined were triploid, 2n = 3x = 36. The polymorphism of karyotype existed in ‘Zanhuang Dazao’. The main three karyotypes were as follows: 2n = 3x = 21m (1SAT ) + 15 sm, 2n = 3x = 15m + 21 sm, 2n = 3x = 21m (2SAT ) + 15 sm. The karyotypes of three strains belonged to Stebbinsp 2A, 2B, 2A type, respectively. ‘Zanhuang Dazao’might have originated from natural crossing with 2n gametes and normal gametes.

Key words: Ziziphus jujuba Mill., Strain, Chromosome, Karyotype, Origin

CLC Number: