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黄山和九华山产草芍药的核型

张定成   

  1. (安徽师范大学生物系,芜湖)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1989-11-10 发布日期:1989-11-10
  • 通讯作者: 张定成

Karyotype of Paeonia obovata Maxim. from Mt. Huangshan and Mt. Jiuhuashan

Zhang Ding-Cheng   

  1. (Department of Biology,  Anhui Normal University,  Wuhu)
  • Received:1900-01-01 Revised:1900-01-01 Online:1989-11-10 Published:1989-11-10
  • Contact: Zhang Ding-Cheng

摘要:

本文报道了安徽黄山和九华山产草芍药Paeonia obovata Maxim.的校型,两个居群植物的核型
    均为k(2n)=2x=10=6m+2sm+2st, 未见随体。它们的最长和最短染色体的比值均为1.47;臂
    比大于2的染色体的百分比均为0.2,属Stebbins的2A核型。这说明草芍药种内不同居群植物的染
    色体数目和核型都是极其稳定的,而且和芍药属Paeonia内已报道的其它种的染色体数目一致。

关键词: 芍药属, 草芍药, 核型, 黄山, 九华山

Abstract:

The present paper describes the karyotype of two populations of Paeonia obovata
Maxim. from Mt. Huangshan and Mt. Jiuhuashan.  The somatic chromosomes of both groups
are the same: K(2n)=2x=10=6m+2sm+2st, without sat-chromosomes.  The ratio of the lar-
gest to the smallest chromosomes is 1.47.   The proportion of the chromosomes with the arm
ratios more than 2 is 0.2.   Therefore, the karyotypes of both populations belong to 2A type
of Stebbins.
     These descriptions prove that chromosome number and karyotype of different populations
of Paeonia obovata Maxim. are stable.  The chromosome number is identical with that reported
on the species.

Key words: Paeonia obovata, Karyotype, Huangsham, Jiuhuashan.