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毛莨在江西的核型变异

廖亮, 陈晔   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1991-03-10 发布日期:1991-03-10
  • 通讯作者: 廖亮

Karyotype Variation of Ranunculus japonicus from Jiangxi

Liao Liang, Chem Ye   

  • Received:1900-01-01 Revised:1900-01-01 Online:1991-03-10 Published:1991-03-10
  • Contact: Liao Liang

摘要:

本文报道了毛茛(Ranunculus japonicus Thunb.)在江西发现的核型变异。R.japonicus
的基本核型为2n=14=6m+4sm十4st (2SAT);变异核型为2n=14十1B=6m+4sm+4st
(2SAT)十1B和2n=14=6m+6sm(2SAT)+2st。核型变异表现在增加B染色体或第4对同源
染色体异形及第6对随体染色体臂比变化。

关键词: 毛茛, 核型, 变异

Abstract:

Four wild populations of Ranunculus japonicus Thunb. from Jiangxi Province were
cytotaxonomically investigated in the work.  The common karyotype was found to be
2n=14 = 6m+4sm+4st(2SAT). In a population from Mt. Yunju, in addition to the common
one, two variations were observed, i.  e.  2n= 14+1B= 6m+4sm+4st (2SAT)+1B and
2n = 14=6m+6sm(SAT)+2st. Comparing with the common karyotype the variations are the
occurrence of a B-chromosome in one karyotype and the shift of arm ratio of the sixth pair
from “st” to “sm' in the other.

Key words: Ranunculus japonicus, Karyotype, Yariation