首页 | 本刊简介 | 编委会 | 投稿征稿 | 期刊订阅 | 下载中心 | English
 
   
  论文快速检索

请输入关键词

 

 

   
  信息公告
海外撷英栏目开通,欢迎投稿

热带亚热带植物学报网络开通

访问总次数
14828303
今日访问
996
当前在线
0人
 
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 132次   下载 40 本文二维码信息
码上扫一扫!
分享到: 微信 更多
新分类系统下长蒴苣苔亚科(苦苣苔科)细胞学研究概述
杨丽华1, 冯晨1, 徐梅珍1,2, 孙志霞1,2, 康明1
1.中国科学院华南植物园, 中国科学院植物资源保护与可持续利用重点实验室, 广州 510650;2.中国科学院大学, 北京 100049
摘要:  在最新分类系统框架下对长蒴苣苔亚科(Didymocarpoideae)的染色体资料进行了详细的整理和分析,结果表明,长蒴苣苔亚科的细胞学研究仍存在不足,尤其在种级水平上的研究不足25%,且存在一些属的染色体数据空白的现象。在新的分类系统下,一些修订后的属染色体数目表现出一致性或更加具有合理性,但也存在一些属的染色体数目变异仍十分复杂,如汉克苣苔属(Henckelia)和长蒴苣苔属(Didymocarpus)。基于已有的染色体数据,对长蒴苣苔亚科内一些重要属的染色体进化模式及其对物种分化的影响进行了探讨,推测染色体数目的多倍化及非整倍化进化可能对各类群的物种分化具有重要作用,但需要今后利用基于DNA探针的荧光原位杂交技术并结合分子系统学和基因组学研究才能深入地解析染色体的进化模式及其对物种分化的影响。
关键词:  苦苣苔科  长蒴苣苔亚科  染色体数目  染色体进化
DOI:10.11926/jtsb.4082
分类号:
基金项目:国家自然科学基金委员会与广东省自然科学联合基金项目(U1501211)资助
Synopsis of Cytological Studies on Didymocarpoideae (Gesneriaceae) under New Classification System
YANG Li-hua1, FENG Chen1, XU Mei-zhen1,2, SUN Zhi-xia1,2, KANG Ming1
1.Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;2.University of Chinese Academy of Sciences, Beijing 100049, China
Abstract:  Based on molecular phylogenetic evidences, the classification of Gesneriaceae was dramatically changed in recent years. Especially, many genera in the Old Word have been systematically rearranged. However, cytological data of Gesneriaceae have not been re-examined. The cytological data of the Old Word Gesneriads, obtained from WebCyte database, Chromosome Counts Database and related literature, were summarized under the new taxonomic framework of Gesneriaceae. The results showed that the cytological data in Didymocarpoideae was still insufficient. Chromosome number of less than 25% species in this subfamily were reported, and that for many genera have never been reported. Some newly revised genera show uniform somatic chromosome number. However, some genera, such as Henckelia and Didymocarpus, have great variation in chromosome number. Based on these available cytological data, several comments and suggestions on the evolution of chromosome and its influence to species diversification in this family were proposed. It was speculated that both polyploidy and dysploidy of chromosome possibly play important roles to the diversification of some genera. Future works based on new chromosome painting techniques, convinced phylogenetic evidences, and genomics are warranted in studying chromosome evolution of this group.
Key words:  Gesneriaceae  Didymocarpoideae  Chromosome number  Chromosome evolution

Copyright 2007 版权所有 中国科学院华南植物园《热带亚热带植物学报》编辑部
地址: 广州市天河区兴科路723号 中国科学院华南植物园 《热带亚热带植物学报》编辑部 邮编:510650 电话: 86 (0)20-3725 2514  传真:86 (0)20-3725 2642 E-mail: jtsb@scib.ac.cn
本系统由北京勤云科技发展有限公司设计
京ICP备09084417号-2