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王勇, 王青锋, Gituru W. Robert, 郭友好. 珍稀水生植物——宽叶泽苔草的核型研究(英文)[J]. 植物科学学报, 2001, 19(3): 187-190.
引用本文: 王勇, 王青锋, Gituru W. Robert, 郭友好. 珍稀水生植物——宽叶泽苔草的核型研究(英文)[J]. 植物科学学报, 2001, 19(3): 187-190.
WANG Yong, WANG Qing-Feng, GITURU W. Robert, GUO You-Hao. Karyotypical Studies on Caldesia grandis Samuel., A Rare and Endangered Marsh Plant in China[J]. Plant Science Journal, 2001, 19(3): 187-190.
Citation: WANG Yong, WANG Qing-Feng, GITURU W. Robert, GUO You-Hao. Karyotypical Studies on Caldesia grandis Samuel., A Rare and Endangered Marsh Plant in China[J]. Plant Science Journal, 2001, 19(3): 187-190.

珍稀水生植物——宽叶泽苔草的核型研究(英文)

Karyotypical Studies on Caldesia grandis Samuel., A Rare and Endangered Marsh Plant in China

  • 摘要: 宽叶泽苔草(Caldesia grand is Samuel.)是一种珍稀濒危水生植物。它曾经一度被认为已经从中国大陆灭绝,但最近又在湖南省的一个高山沼泽中被发现。本文首次报道了依据上述新发现地点的宽叶泽苔草材料进行的细胞学研究结果。核型分析结果表明:本种染色体数目为22,其染色体组型高度不对称。结合前人对宽叶泽苔草一些近缘种的细胞学及古生物学研究结果,作者认为泽苔草属植物很可能是泽泻科中最进化的一个属。

     

    Abstract: Caldesia grandis Samuel.is an endangered aquatic plant which was once considered to be extinct in mainland China and was recently found in a bog in a mountainous region of Hunan Province.Acytological study on the species basing on the materials from the newly found locality is reported here.The karyotypical analysis reveals that this species has a chromosome number of 22 and contains high-level asymmetrical chromosomal complements.Combining the results of cytological and paleontological studies on some closely related species reported by earlier researchers,it is suggested here that the genus Caldesia is probably the most advanced group in Alismataceae.

     

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