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
13812038
今日访问
3454
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 4105次   下载 1925 本文二维码信息
码上扫一扫!
分享到: 微信 更多
广西岩溶石山飞机草种群的繁殖特征
韦春强1, 刘明超2,3, 唐赛春1, 潘玉梅1, 蒲高忠1, 岑艳喜2,3
1.广西壮族自治区中国科学院广西植物研究所;2.1. 广西壮族自治区中国科学院广西植物研究所;3.2. 广西师范大学
摘要:  对广西岩溶石山3个典型群落(飞机草优势群落、黄荆条-飞机草混合群落和类芦-蔓生莠竹群落)中飞机草 (Eupatorium odoratum)种群的繁殖特征进行了研究。结果表明: 3个群落中飞机草的头状花序数为520~3281个m-2; 种子产量为12941~74386粒m-2;头状花序的平均种子数为22~25粒;种子千粒重为0.17~0.19 g。混合群落中飞机草的单株头状花序数和种子产量与伴生群落的差异显著,而飞机草优势群落与这两个群落无显著差异。单株飞机草的种子产量与株高、生物量呈正相关;单位面积的种子产量与开花植株数、头状花序数呈正相关,而与盖度的相关性较小。飞机草在干旱贫瘠的岩溶石山的3个群落中均能够产生大量轻的种子,具有强大的繁殖能力,表现出较强的入侵性,并能根据环境的变化而选择相应的繁殖策略,最大限度的适应环境。
关键词:  岩溶石山  飞机草  繁殖特征  入侵能力
DOI:10.3969/j.issn.1005-3395.2011.04.009
分类号:
基金项目:广西科技攻关项目(0719005, 0992026-5); 国家科技支撑计划项目(2006BAC01A10); 广西自然科学基金项目(2011GXNSFE018005)资助
Reproductive Characteristics of Eupatorium odoratum Populations in Karst Rocky Mountain in Guangxi
WEI Chun-qiang1, LIU Ming-chao2,3, TANG Sai-chun1, PAN Yu-mei1, PU Gao-zhong1, CEN Yan-xi2,3
1.Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, China;2.1. Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, China;3.2. Guangxi Normal University, China
Abstract:  The reproductive characteristics of Eupatorium odoratum population in three typical communities, such as E. odoratum community (dominancy community), Vitex negundo-E. odoratum community (mixed community), and Neyraudia reynaudiana -Microstegium vegans community (concomitant community), were studied in karst rocky mountain in Guangxi. The results showed that the number of capitulum of E. odoratum in 1 square meter ranged from 520 to 3281, and seed yield from 12941 to 74386 grains m-2, each capitulum produced 22 to 25 seeds and the 1000-seed-weight ranged from 0.17 to 0.19 g. The number of capitulum and seed yield per individual in mixed community were significantly different from those in concomitant community, but there were not significant difference between dominant community and two another communities. There was a positive correlation between individual seed yield and plant height, as well as biomass. Seed yield in unit area was positively correlated with the number of flowering plants and capitulum, but was weakly correlated with coverage. In the three communities in arid karst rocky mountain, E. odoratum could produce a large number and light seeds, it indicated that E. odoratum had strong reproductive capacity and displayed strong invasive, and it also could choose the corresponding reproductive strategy according to the environment change, so that it could adapt to environment at large scale.
Key words:  Karst rocky mountain  Eupatorium odoratum  Reproductive characteristics  Invasive ability

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