2021年10月17日 星期日
伞形科囊瓣芹属2种类的核型分析
Karyotype analysis of two species in Pternopetalum Franch. of Apiaceae
2021年 第30卷 第1期 页码[69-71]    下载全文[3.8MB]  
Abstract

 Chromosomal karyotypes in root tip cells of Pternopetalum botrychioides (Dunn) Hand.-Mazz. and P. latipinnulatum (Shan) J. B. Tan et X. J. He in Pternopetalum Franch. of Apiaceae were analyzed by using pressing flake method. The results show that chromosome length of P. botrychioides and P. latipinnulatum is 2.60-4.89 and 2.97-4.42 μm, respectively, and total length of their genome is 117.60 and 122.06 μm, respectively; their chromosome numbers are both 33, basic chromosome numbers are both x=11, karyotype formulas are both 2n=3x=21m+9sm+3st, and karyotype asymmetries are both 2A type. The significance of classification and basic chromosome number of P. botrychioides and P. latipinnulatum in grouping of species in Pternopetalum is discussed based on the research results.

关键词伞形科; 囊瓣芹属; 散血芹; 宽叶散血芹; 染色体基数; 核型分析
Key wordsApiaceae; Pternopetalum Franch.; P. botrychioides (Dunn) Hand.-Mazz.; P. latipinnulatum (Shan) J. B. Tan et X. J. He; basic chromosome number; karyotype analysis
作者李慧敏, 周伟, 宋春凤
所在单位江苏省中国科学院植物研究所(南京中山植物园) 江苏省植物资源研究与利用重点实验室, 江苏 南京 210014
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基金项目江苏省自然科学基金项目(BK20200294); 江苏省植物资源研究与利用重点实验室开放基金项目(JSPKLB201834; JSPKLB201923); 江苏省中国科学院植物研究所博士人才科研启动基金项目(JSPKLB202016)