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窄瓣鹿药和麦冬核型报道

王淑芬, 许介眉, 于树华   

  • 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: 王淑芬

Report on Karyotypes of Smilacina tatsienensis and Ophiopogon japonicus

Wang Shu-Fen, Xu Jie-Mei, Yu Shu-Hua   

  • Received:1900-01-01 Revised:1900-01-01 Online:1990-05-10 Published:1990-05-10
  • Contact: Wang Shu-Fen

摘要:

 本文对四川的窄瓣鹿药(Smilacina tatsienensis (Franch. )wang et Tang)和麦冬(Ophiopogon
  japonicus(L. f.)Ker.-Gawl.)进行了核型分析和形态研究,它们的核型报道为第一次。麦冬的核型公
  式为2n=2x=36=18m(4SAT)+18sm,并在同株植物发现它的三倍体2n=3x=54(为第一次
  报道)和四倍体2n=4x=72的体细胞,证明四川绵阳栽培的麦冬为混倍体植物。窄瓣鹿药的核型公
  式为  2n=2x=36=16m十10sm十10st(2SAT)。

关键词: 鹿药属, 沿阶草属, 核型, 混倍体

Abstract:

 In the present paper the karyotypes of Smilacina tatsienensis (Franch.) Wang
et Tang and Ophiopogon japonicus (L. f.) Ker.- Gawl. in Sichuan were analysed.  The karyo-
types of the two species are reported for the first time.  The results are shown as follows.
      Smilacina tatsienensis (Franch.) Wang et Tang is a dipoiid.  Its karyotype formula is
2n=2x=36=16m+10sm+10st(4SAT) (Plate 1: Fig. 1, 3).  The karyotype is bimodal with ten
large and eight small chromosome pairs and the length ratio of the tenth pair to the eleventh
being 1.33.  The length ratio of the largest chromosome and the smallest one is 4.33.
       Ophiopogon japonicus (L.f.) Ker.-Gawl. is a mixoploid, with diploid, triploid and tetra-
ploid cells in a single plant.  The karyotype formula  of the diploid is  2n=2x=36=18m
(4SAT)+18sm(Plate 1: Fig. 2, 4).  The species is of a bimodal karyotype with eight large and
ten small chromosome pairs and the length ratio to the eighth pair and the ninth being 1.10.
There are nine metacentric pairs (two pairs of sat-chromosomes) and nine submetacentric pairs.

Key words: Smilacina tatsienensis, Ophiopogon japonica, Karyotype, Mixoploid