6种铁线莲属植物的柱头特征对传粉的适应

doi:10.7525/j.issn.1673-5102.2017.03.003

植物研究 ›› 2017, Vol. 37 ›› Issue (3): 334-339.doi: 10.7525/j.issn.1673-5102.2017.03.003

6种铁线莲属植物的柱头特征对传粉的适应

王思源, 吴海燕, 蔡正旺, 苏雪, 侯勤正, 孙坤

西北师范大学生命科学学院, 兰州 730070

收稿日期:2016-12-08 出版日期:2017-05-15 发布日期:2017-06-03
通讯作者: 孙坤,E-mail:kunsun@nwnu.edu.cn E-mail:kunsun@nwnu.edu.cn
作者简介:王思源(1992-),男,硕士研究生,主要从事植物生理生态方面研究工作。
基金资助:
国家自然科学基金（31270429，31160046）

Characteristics of Stigma in Six Clematis Species and Its Adaptation to Pollination

WANG Si-Yuan, WU Hai-Yan, CAI Zheng-Wang, SU Xue, HOU Qin-Zheng, SUN Kun

College of life Science, Northwest Normal University, Lanzhou 730070

Received:2016-12-08 Online:2017-05-15 Published:2017-06-03
Supported by:
The National Natural Science Foundation of China(31270429,31160046)

摘要/Abstract

摘要： 为了解传粉过程中柱头对花粉的捕获策略，对6种铁线莲属植物（甘青铁线莲、灌木铁线莲、粉绿铁线莲、薄叶铁线莲、粗齿铁线莲和短尾铁线莲）的柱头显微结构进行扫描电镜观察，发现6种铁线莲属植物的柱头均位于花柱的腹缝面，由花柱腹缝两侧细胞发育成柱头乳突，乳突形状随花期逐步从球状到指状甚至长指状过度，并伴随着柱头受粉面从花柱顶端朝花柱基部渐次发育成熟的特殊发育式样。观察分析6种铁线莲的花部综合征及花粉胚珠比（P/O）发现，柱头的此类发育式样与其他花部构成存在功能上的协同一致。为理解铁线莲属植物花部的进化提供了新的思路和视野，对观赏用铁线莲属植物的育种栽培具参考价值。

关键词: 铁线莲属, 柱头, 渐次发育, 传粉, 花部综合征, P/O值

Abstract: An unusual developmental pattern of stigma was observed in six Clematis species(Clematis tangutica(Maxim.) Korsh., Clematis fruticosa Turcz., Clematis glauca Willd., Clematis gracilifolia Rehd. et Wils., Clematis argenfilucida(Levl. et Vant.) W.T.Wang, Clematis brevicaudata DC.) by scanning electron microscopy. The stigmas of Clematis flowers were on the ventral sides of the styles, and developed into stigmatic papillae by cells along the ventral slits. The shape of papillae change along with the development of stigma. During anthesis, the receptive surfaces matured in a sequence from the apical towards the basal ends of the styles. Stigma development pattern is functionally concerted with other floral design. Our study will be a new field of vision to understand the evolution of stigma in pollen capture with a reference value in breeding and cultivation of ornamental Clematis species.

Key words: Clematis, stigma, sequential development, pollination, floral syndrome, pollen-ovule ratios

中图分类号:

Q944.43

王思源, 吴海燕, 蔡正旺, 苏雪, 侯勤正, 孙坤. 6种铁线莲属植物的柱头特征对传粉的适应[J]. 植物研究, 2017, 37(3): 334-339.

WANG Si-Yuan, WU Hai-Yan, CAI Zheng-Wang, SU Xue, HOU Qin-Zheng, SUN Kun. Characteristics of Stigma in Six Clematis Species and Its Adaptation to Pollination[J]. Bulletin of Botanical Research, 2017, 37(3): 334-339.

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6种铁线莲属植物的柱头特征对传粉的适应

Characteristics of Stigma in Six Clematis Species and Its Adaptation to Pollination

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