欢迎访问中国科学院大学学报,今天是

中国科学院大学学报

• • 上一篇    下一篇

万年青属和开口箭属5个种的核型研究

杨涤清, 朱燮桴   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1990-05-10 发布日期:1990-05-10
  • 通讯作者: 杨涤清

Studies on Karyotypes of 5 Species of Rohdea and Tupistra

Yang Di-Qing, Zhu Xie-Fu   

  • Received:1900-01-01 Revised:1900-01-01 Online:1990-05-10 Published:1990-05-10
  • Contact: Yang Di-Qing

摘要:

本文对江西、浙江、四川的万年青Rohdea japonica,开口箭Tupistra chinensis、筒花开口箭
    T.delavayi、金山开口箭T.jinshanensis以及弯蕊开口箭T.wattii的核型进行了分析,其中筒花开
    口箭、金山开口箭和弯蕊开口箭的核型为首次报道。万年青属的基本核型为2n=38=26m十10sm十
2st;开口箭属的基本核型为2n=38=26m+12sm,两者极为相似。本文还对万年青属、开口箭属
与其邻近属——铃兰属Convallaria、吉祥草属Reineckia、白穗花属Speitantha,蜘蛛抱蛋属Aspi-
distra等的核型进行了分析讨论。

关键词: 万年青属, 开口箭属, 核型

Abstract:

Five species of the genera Rohdea and Tupistra of Liliaceae were cytota-
xonomically investigated in this work.  The materials were collected from Jiangxi, Zhejiang,
and Sichuan provinces.  The results are shown as follows.
      1.  Rohdea Roth There are two forms of Rohdea japonica (Thunb.) Roth.  The karyo-
type formula of the cultivated form is 2n=38=28m+8sm+2st (Plate, 1), while that of the
wild one is 2n=38=26m+10sm+2st (Plate, 1). They both belong to Stebbins' (1971) karyotype
classification 2 B.
      2. Tupistra Ker-Gawl. The karyotype of Tupistra chinensis Baker from Mt. Lu-
shan, Jiangxi,is 2n=38=24m+14sm(Plate, 2), which differs from that of Campylandra
watanabei(=T. chinensis) from Taiwan, which is 2n = 38 = 32m + 4sm + 2st (Ch-
ang et Hsu, 1974).  The chromosome numbers and karyotypes of the three  species
from Nanchuan, Sichuan, are reported here for the first time.  The karyotype for-
mulas of T. delavayi Franch. and T. jinshanensis Z. L. Yang et X. G. Luo are both
2n= 38 = 26m + 12sm (Plate, 2-3), and that of T. wattii (C. B. Clarke) Hook.
f. is 2n= 38= 28m + 10sm (Plate, 3).  They all belong to 2B.
     3.  In Convallarieae (s. 1.) the chromosome numbers of all the genera, except for Thero-
pogon, are 2n=38 or both 2n=38 and 2n=36 in Aspidistra.  The karyotypes of Rohdea and
Tupistra are most similar, the differenc in karyotype between two genera is only presence or
absence of a pair of subterminal chromosomes. The karyotype of Rohdea is similar to that of
Convallaria rather than to those of Aspidistra and Speirantha, while the karyotype of Tupistra
is similar to that of Reineckia rather than to those of the other genera.

Key words: Rohdea, Tupistra, karyotype, Idiogram, China