南京林业大学学报(自然科学版) ›› 2018, Vol. 42 ›› Issue (01): 156-162.doi: 10.3969/j.issn.1000-2006.201705023

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铁线莲属灌木铁线莲组毛茛科研究进展

何 健,刘慧杰,谢 磊*   

  1. 北京林业大学自然保护区学院,北京 100083
  • 出版日期:2018-03-30 发布日期:2018-03-30
  • 基金资助:
    基金项目:国家自然科学基金项目(31670207); 北京林业大学青年教师科学研究中长期项目(2015ZCQ-BH-03); 科技基础性研究工作专项项目(2013FY112100) 第一作者:何健(hj151004@163.com)。*通信作者:谢磊(xielei_si@126.com),副教授,博士。

Research advances of Clematis Sect. Fruticella(Ranunculaceae)

HE Jian, LIU Huijie, XIE Lei*   

  1. College of Nature Conservation, Beijing Forestry University, Beijing 100083, China
  • Online:2018-03-30 Published:2018-03-30

摘要: 毛茛科铁线莲属的植物多数为攀援藤本,并且对环境中的水分条件有一定要求。而灌木铁线莲组却是铁线莲属内非常独特的一个类群,该组植物均为耐旱的直立灌木,对我国北方极端干旱的气候条件有着很强的适应能力。在分类学上,该组的类群界定存在一定争议,大多数学者是以单一的直立灌木性状来界定该组类群,但也有学者认为应结合灌木性状以及花部特征来界定一个更加自然的类群。另外,该组植物还呈现出间断式地理分布模式,主要的类群分布在我国北方干旱戈壁地区,但在青藏高原东部也有零星分布,并且两个分布区距离较远。笔者从系统分类学、灌木习性起源与耐旱生理学响应、花器官特征、园艺引种栽培情况等方面对灌木铁线莲组植物的国内外研究进展进行了综述,并对该组植物研究目前存在的问题以及未来的研究方向提出了建议。

Abstract: Abstract: Species of Clematis(Ranunculaceae)are usually climbing vines and require moist conditions. However, Clematis Sect. Fruticella contains a group of xerophilous species with erect shrubby habit. Plants of Sect. Fruticella often occur in dry or even desert areas of northern, western and southwestern China. In taxonomy, there have been controversies regarding the delimitation of this group. All the authors defined the group only using a single trait of upright shrub habit previously. However, recent taxonomic revision believed that the trait of upright shrub should be combined with floral features(white or yellow flower)to define a more natural group. In addition, this group of shrubby Clematis shows an interesting geographical distribution patterns in drought areas across China. Four species with yellow flowers(Clematis fruticosa, C. nannophylla, C. tomentella, C. canescens)distribute in the arid Gobi area in northern China. The other one with yellow flower, C. viridis, occurs in the eastern part of the Qinghai-Tibetan Plateau and is separated from the former four species. Other shrubby Clematis with white flowers distribute in Xinjiang Autonomous Region and dry valley of the Hengduan Mountains. In this paper, study advances in taxonomy and phylogeny, origin of the shrub habit, physiological responses of drought resistance, characteristics of the floral organ, and introduction and horticultural cultivation of Sect. Fruticella are reviewed. The remaining scientific questions are discussed, and suggestions for future studies are proposed.

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