干旱区生态环境知识资源中心(Arid): 广西岩溶石山飞机草种群的繁殖特征

Arid

	广西岩溶石山飞机草种群的繁殖特征
其他题名	Reproductive Characteristics of Eupatorium odoratum Populations in Karst Rocky Mountain in Guangxi
	韦春强; 刘明超; 唐赛春; 潘玉梅; 蒲高忠; 岑艳喜
来源期刊	热带亚热带植物学报
ISSN	1005-3395
出版年	2011
卷号	19 期号:4 页码:333-338
中文摘要	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(Eupotorium odorotum)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5203281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。
英文摘要	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.
中文关键词	岩溶石山 ; 飞机草 ; 繁殖特征 ; 入侵能力
英文关键词	Karst rocky mountain Eupatorium odoratum Reproductive characteristics Invasive ability
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4273527
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226846
作者单位	广西壮族自治区中国科学院广西植物研究所, 桂林, 广西 541006, 中国
推荐引用方式 GB/T 7714	韦春强,刘明超,唐赛春,等. 广西岩溶石山飞机草种群的繁殖特征[J],2011,19(4):333-338.
APA	韦春强,刘明超,唐赛春,潘玉梅,蒲高忠,&岑艳喜.(2011).广西岩溶石山飞机草种群的繁殖特征.热带亚热带植物学报,19(4),333-338.
MLA	韦春强,et al."广西岩溶石山飞机草种群的繁殖特征".热带亚热带植物学报 19.4(2011):333-338.