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贝母属三个分类群的核型研究

王志安   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1992-01-18 发布日期:1992-01-18
  • 通讯作者: 王志安

A Karyological Study on Three Taxa of Fritillaria

Wang Zhi-An   

  • Received:1900-01-01 Revised:1900-01-01 Online:1992-01-18 Published:1992-01-18
  • Contact: Wang Zhi-An

摘要:

本文对浙贝Fritillaria thunbergii Miq.(取材于浙江鄞县和舟山)、东贝 F.thunbergii var.
chekiangensis Hsiao et K.C.Hsia和皖贝F.anhuiensis S.C.Chen et S.F.Yin的核型进行了分析比较,
其中东贝和浙贝(舟山)为首次报道.浙贝的核型:取材于浙江鄞县的为2n=24=4m(1sc) l)+4st(1sc)
+16t(1sc),取材于浙江舟山为  2n=24=2m+2sm+12st(1sc)+8t(2sc),东贝的核型为
2n=24=2m+2sm+8st(2sc)+12t(4sc),皖贝的核型为2n=24=2m+2sm+8st(2sc)+12t(5sc)。3个分类
群均属3B核型。

关键词: 贝母, 核型

Abstract:

This paper deals with karyotype analysis of three taxa of Fritillaria, i. e. F.
thunbergii (from Yinxian and Zhoushan), F. thunbergii var. chekiangensis, and F. anhuiensis.
The results show that all the three taxa are diploid (2n = 24) and their karyotypes are differ-
ent. The karyotype formulae may be summarized as follows: F. thunbergii: Yinxian, 4m(lsc)
+4st(lsc) l) +16t(lsc) ; Zhoushan, 2m+2sm+12st(lsc) +8t(2sc) . F. thunbergii var.
chekiangensis2m+2sm+8st (2sc) +12t (4sc). F. anhuiensis 2m+2sm+8st (2sc) + 12t (5sc). There
are many secondary constrictions in all the three taxa of Fritillaria studied, but the number
and positions of secondary constrictions are quite different in different taxa.

Key words: Fritillaria, Karyotype.