生态环境学报Issue(1)：1-6,6.
三种菊科入侵植物的生长与化学防御的关系研究
Growth and chemical defense in three Asteraceae invasive weeds in lower subtropical China
摘要
Abstract
A universal theory in ecology is that the allocations of limited resources to growth and defense are trade-off, while this theory appeared not to hold for invasive plants according to the previous studies. In this study, three invasive Asteraceae plant species in the Guangdong province i.e., Eupatorium odoratum, Mikania micrantha, Wedelia trilobata, and their congeneric or co-occurring native plant species i.e., Eupatorium chinensis, Paederia scandens, Wedelia chinensis were used to detect if there is a trade-off between growth and chemical defenses on the basis of carbon allocation, and investigate the trade-off relations between them. All the three invasive Asteraceae had higher relative growth rate (RGR) as compared to their related native counterparts, and M. micrantha had higher specific leaf area (SLA) as well. Two invasive Asteraceae (i.e., M. micrantha and W. trilobata) had higher condensed tannin content, while the other invasive species E. odoratum had higher total phenolics content, as compared to their native species. Our results indicate that the invasive plants have similar carbon assimilation but different carbon allocations between the growth and chemical defense, thus implying that the special underlying carbon utilization mechanism may be a key for their successful invasions.关键词
菊科入侵植物/相对生长率/比叶面积/总酚/缩合单宁Key words
Asteraceae invasive plants/Relative growth rate/Specific leaf area/total phenolics/condensed tannin分类
农业科技引用本文复制引用
倪广艳,朱丽薇,牛俊峰,赵秀华,张振振,赵培强..三种菊科入侵植物的生长与化学防御的关系研究[J].生态环境学报,2014,(1):1-6,6.基金项目
国家自然科学基金项目(31200380)；广东省自然科学基金(S2011040000331；S2013010012054)；中国科学院知识创新工程项目(KSCX2-EW-J-28) （31200380）
