生物多样性 ›› 1995, Vol. 03 ›› Issue (2): 84-87.doi: 10.17520/biods.1995014

• 论文 • 上一篇    下一篇

野生紫斑牡丹和四川牡丹种子萌发特性及与其致濒的关系

景新明, 郑光华, 裴颜龙, 洪德元   

  1. (中国科学院植物研究所植物园,北京 100093)
    (中国科学院植物研究所系统与进化植物学开放研究实验室)
  • 收稿日期:1994-07-18 修回日期:1994-09-02 出版日期:1995-05-20

A study on the relationship betweeu seed germination of wild Paeonia rockii and P. szechuanica and theirendangerment

Jing Xinming, Zheng Guanghua, Pei Yanlong, Hong Deyuan   

  1. Institute of Botany,Chinese Academy of Sciences,Beijing 100093
  • Received:1994-07-18 Revised:1994-09-02 Online:1995-05-20

野生牡丹种子一般较小,而且不同产地之间形状、大小差异较大。其萌发特性与栽培牡丹相比也有较大差异:萌发期长达半年以上,且萌发温度在10~15℃为宜,超过20℃则明显不利于生根及上胚轴生长。四个不同分布地的四川牡丹种子萌发率较一致,均在60~77%之间。三个不同产地的紫斑牡丹种子萌发率则相差甚远,分布于甘肃文县的萌发率达76%,而分布于陕酉略阳和湖北神农架的萌发率则分别只有12%和4.4%,出苗率则更低。本文认为紫斑牡丹的种子特性是其在自然界处于濒危状态的重要原因之一。

Most seeds of the wild peony were small as compared with cultivars of cultivated peony. The germinationof wild peony seeds must to have a long time, at least, of six months. The temperature range of 10~15℃was more suitable and 20℃ would be harmful to seed germination. Though the germination percentages of Paeonia szechuanica Fang of four localities were only slightly different (60~77%), there were great different in P. rockii T. Hong et. J. J. Li among the three different localities: the germination rate of seedsfrom Wenxan county , Gansu province was high to 76%, the others were only 12% and 4. 4% fromLueyang county, Shanxi province and Shennongjia county, Hubei Ptovince, respectively. It is suggestedthat the seed germination characters were one of the important factors which had caused the endangeredstatus of wild T. Hong et. J. J. Li.

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