欢迎访问中国科学院大学学报，今天是
RSS English

中国科学院大学学报

• • 上一篇    下一篇

黄精属5种植物的核型研究

邵建章, 张定成, 杨积高, 姚才洪, 钱 枫   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1993-07-18 发布日期:1993-07-18

Karyotype Analysis of 5 Species of Polygonatum Mill.

Shao Jian-zhang, Zhang Ding-cheng, Yang Ji-gao, Yao Cai-hong, Qian Feng   

  • Received:1900-01-01 Revised:1900-01-01 Online:1993-07-18 Published:1993-07-18

摘要：

 本文报道了安徽省黄精属Polygonatum Mill．5种植物的染色体数目和核型。玉竹P. odoratum
(Mill.)Druce黄山材料2n=16=10m(3sc)+6sm，滁县琅琊山材料2n=18=10m(1sc) +2sm+6st(2sc)，二者均属2B核型．
长梗黄精P．filipes Mirr. 黄山材料2n=22=8m+8sm(2sc)+6st，属3B核型，安徽繁昌材料2n=14=10m+4sm和2n=16=8m
+4sm+4st，二者均属2B核型。多花黄精(P.cyrtonema Hua)安徽黄山材料2n=20=8m+6sm+6st和2n=22=6m+8sm
+4st+4t，二者均属3B核型，安徽滁县琅琊山材料2n=18=8m(2sc)+6sm+4st，属2B核型。长苞黄精(P．desoulayi kom．)
2n=22=10m(2sc)+6sm(1sc)+6st，属3B核型；轮叶黄精(P．verticillatum(L．)All．)2n=18=2m+2sm+10st+2t+2T
和2n=24=6m+4sm+12st+2T，二者均属3B核型。其中玉竹2n=16，长梗黄精2n=14和2n=22，长苞黄精2n=22，轮叶黄精2n=18的染色体数目和核型均为首次报道。

关键词: 黄精属, 玉竹, 长梗黄精, 多花黄精, 长苞黄精, 轮叶黄精, 核型

Abstract:

The present paper reports the chromosome numbers and karyotypes of five species in Polygonatum from Anhui of China. The materials used in this work  are listed in Table  1,  Photomicrographs of somatic metaphase  and karyograms of the five species of Polygonatum in Plate 1, 2, 3, the idiograms in
Fig. 1-11 and a comparison of the karyotype of them is provided in Table 2. The results are shown as follows:
     1. Polygonatum odoratum (Mill.)Druce
     Two materials were examined. One from Mt. Huangshan, Anhui, has 2n= 16 = 10m (3sc)+ 6sm (Plate 1 :A, B). The idiogram is shown in Fig. 1. The chromosomes range in length from 2.85 to 8.85 μm, with the total length  48.63μm and the ratio of the longest to the shortest 3.11, The karyotype belong  to Stebbins’(1971) 2B. The two chromosomes of the first pair have arm ratios  1.01 and 1.29 respectively, and The first pair has one chromosome carrying a  satellite attached to the short arm, showing heterozyosity .The chromosome num-
 ber of 2n= 16 in P. odoratum and its karyotype are reported for the first time.
      The other from Langyashan, Chu - xian, Anhui, is found to have 2n = 18 = 10m  (Isc)+2sm+6st(2sc) (Plate 1: C, D). The idiogram is shown in Fig. 2. The  chromosomes range in length from 2.43 to 8.29μm, with the total length 46.67µm  and the ratio of the longest to the shortest 3.41. The karyotype is also of 2B. In a somatic chromosome complement the 2nd pair have one chromosome carrying a satellite attached to the long arm, showing heterozygosity.
      2. Polygonatum filipes Merr.
      Two materials were examined. One from the Huangshan, Anhui is found to have two cytotypes: 2n= 16 and 2n=22. This paper reports one of them. The karyotype formula is 2n=22=8m+8sm(2sc)+6st(Plate 3:  Q,  R).  The  idiogram is shown in Fig. 3. The chromosomes range in length from 2.55- 5.85μm, with the total length 45.01 μm and the ratio of the longest to the  shortest 2.29. The karyotype belongs to 3B.
      The other material from the Fangchang, Anhui, is shown to have four cytitypes: 2n= 14, 2n= 16, 2n=20 (Plate 3: W) and 2n=22. This paper reports two of them.
      Type I: the karytype formula is 2n=14=10m+4sm (Plate 3: S, T). The idiogram is shown in Fig. 5. The chromosomes range in length from 2.59 to  7.61μm, the total length 37.44μm and the ratio of the longest to the shortest is  2.94. the karyotype belongs to 2B.
     Type II  :The karyotype formula is 2n=16=8m+4sm+4st (Plate 3: U, V).
 The idiogram is shown in Fig. 4. The chromosomes range in length from 2.65 to
 8.21 μm, the total length 46.01 μm and the ratio of the longest to the shortest
 3.10. The karyotype belongs to 2B.
     The chromosome numbers of 2n=20, 2n= 14 and 2n=22, and karyotype of
2n= 14 and 2n=22 in P. filipes are reported for the first time.
     3. Polygonatum cytonema Hua
     Two materials were examined. One from the Langyashan, Chuxian, anhui, is found to have 2n = 18 = 8m (2sc)+ 6sm+ 4st (Plate 2: K, L). The idiogram is shown in Fig. 7. The chromosomes range in length from 3.41 to 9.21 μm, the total length 56.34μm and the ratio of the longest to the shortest is 2.70. The karyotype belongs to 2B.
     The other material from the Huangshan, Anhui, has two cytotypes: 2n=20 and 2n= 22. Type I: The karyotype formula is 2n= 20= 8m+ 6sm+ 6st (Plate 2: M, N). The idiogram is shown in Fig. 8. The chromosomes range in length from 1.75 to 5.03μm, with the total length 32. 91μm and the ratio of the longest to the shortest 2. 87. The karyotype is also of 2B. Type II: The karyotype formula is 2n=22=6m+ 8sm+4st+ 4t (Plate 2: O, P ). The idiogram is Shown in Fig. 10. The chromosomes range in length from 1.75 to 4.95 μm, with total length 35.05μm and the ratio of the longest to the shortest 2.83. The karyotype brlongs to 3B.
    4. Polygonatum desoulayi kom.
    The  material  from  Xuancheng,  Anhui,  is  found  to  have  karyotype 2n = 22 = 10m (2sc) + 6sm (lsc) + 6st ( Plate 2. I, J).  The idiogram is shown in Fig. 6. The chromosomes range in length from 1.86 to 5.61μm, with the total length 41.98μm and the ratio of the longest to the shortest 3.02. The karyotype is also of 3B. The first pair has one chromosome carrying a satellite attached to the long arm, showing heterozygosity. The chromosome number and karyotype of Chinese material are reported for the first time.
     5. Polygonatum verticillatum (L.) All.
     The material from the Langyashan, Chuxian, Anhui is found to have two cytotypes. Type 1: the karyotype formula is 2n = 18 = 2m+ 2sm+ 10st+ 2t+ 2T (Plate 1: G, H). The idiogram is shown in Fig.9. The chromosomes range in  length from 1.86 to 4.03μm, with total length 28.28μm and the ratio of the  longest to the shortest 2.17. The karyotype classification belongs to 3B. Type II:  The karyotype formula is 2n=24=6m+4sm+12st+2T (Plate 1: E, F). The  idiogram is shown in Fig. II. The chromosomes range in length from 2.01 to  5.03μm, with total length 41.36μm and the ratio of longest to shortest 2.50.  The karyotype is also of 3B. The chromosome numbers and karyotypes of  Chinese material are reported for the first time.    

Key words: Polygonatum, P. odoratum, P. filipes, P. cyrtonema, P. desoulayi, P. verticillatum, Karyotype.

首页 | 期刊介绍 | 编委会 | 投稿指南 | 期刊浏览 | 期刊订阅 | 联系我们

版权所有 © 《中国科学院大学学报》编辑部

本系统由北京玛格泰克科技发展有限公司设计开发

技术支持：support@magtech.com.cn

访问统计

总访问量： 今日访问： 当前在线：

联系我们

通讯地址：北京玉泉路19号（甲）中国科学院大学科研楼410

联系电话:（010）88256013