Local grasses for the control of the invasive vine Mikania micrantha  

乡土草本植物对入侵植物薇甘菊的防控

作　　者：Sheng Zhou Min Wang Linglong Yuan Hao Chen Linyuan Yan Sitong Yao Bipei Zhang 

机构地区：[1]Key Laboratory of Tropical&Subtropical Flowers and Landscape Plants of Guangdong Higher Education Institutions/College of Horticulture and Landscape Architecture,ZhongKai University of Agriculture and Engineering,Guangzhou 510225,China [2]Department of Mathematical Sciences,The University of Liverpool,Liverpool L697ZL,UK [3]Department of Mathematical Sciences,Xi’an Jiaotong-Liverpool University,Suzhou 215123,China [4]Institute of Zoology,Biocenter,Cologne University,50674 Cologne,Germany

出　　处：《Journal of Plant Ecology》2022年第4期844-853,共10页植物生态学报（英文版）

基　　金：funded by the National Natural Science Foundation of China(Project 30570330 and 30370243);Hongda Zhang Scientifc Research Fund,Sun Yat-Sen University,and Shenzhen Greening Committee:Non-Environmental Disruptive Control of Mikania micrantha(2010-13);Ecological Forestry Special Fund,Forestry Administration of Guangdong Province(KH2101501).

摘　　要：Mikania micrantha(Asteraceae)is an invasive vine found in tropical and southern subtropical Asian and the Pacifc Islands.The current methods used to control this vine are inadequate,which warrants the development of ecologically sustainable methods.Therefore,we investigated the ability of four grass species to prevent the invasion of M.micrantha,with an ultimate goal of developing ecologically sustainable control methods for widespread application.The clumps of native grass species from China(Panicum incomtum,Pennisetum purpureum,Saccharum arundinaceum and Microstegium vagans)were established.We sowed M.micrantha seeds and transplanted the seedlings into the grass clumps to examine whether the clumps could eliminate the new M.micrantha plants.In addition,we transplanted M.micrantha into existing grass clumps to examine whether the grass clumps could prevent the re-invasion of M.micrantha.Furthermore,we grew M.micrantha with P.incomtum and P.purpureum in the feld to examine whether the grasses could outcompete M.micrantha.Mikania micrantha seeds germinated hardly in the grass clumps,and all seedlings died within 3 months.It was diffcult for the vine to survive in the grass clumps.Our feld experiments showed that the coverage of M.micrantha was signifcantly lower than that of the grass species in the frst year,and that the vine was outcompeted after 2 years.To the best of our knowledge,this study is the frst to reveal that tall grasses,particularly P.incomtum and P.purpureum,have potential to serve as bio-control agents for M.micrantha.薇甘菊(Mikania micrantha)是在太平洋岛屿和亚洲热带亚热带发现的一种入侵植物。目前防治薇甘菊的方法并不完善,因此亟需寻找对环境友好的、更有效的防治方法。因此,我们探究了4种草本植物对薇甘菊入侵的防御能力,以期为薇甘菊的生态可持续防治提供科学依据。本研究选取了4种来自中国本土的多年生禾本科草本植物:藤竹草(Panicum incomtum)、象草(Pennisetum purpureum)、斑茅(Saccharum arundinaceum)和蔓生莠竹(Microstegium vagans)来构建草丛。将薇甘菊种子播种在上述草丛中,同时还将薇甘菊幼苗移栽到上述草丛中,观察草丛是否能阻止薇甘菊幼苗的生长。此外,我们还将薇甘菊移植到现有的草丛中,观察草丛是否能够阻止薇甘菊的再次入侵。最后还在野外将薇甘菊分别与藤竹草和象草一同种植,探究这两种禾本科植物是否能在竞争中胜出。研究结果表明,薇甘菊种子在上述草丛中萌发困难,所有薇甘菊幼苗在3个月内死亡,说明薇甘菊很难在现有的草丛中生存。野外实验表明,薇甘菊盖度在第一年显著低于这些草本植物,两年后全部被这些草本植物取代。据我们所知,本研究首次揭示了高大草本植物,特别是藤竹草和象草,具有作为薇甘菊生物防治的潜力。

关 键 词：local grass Panicum incomtum Pennisetum purpureum biological control Mikania micrantha INVASIVE 

分 类 号：Q948[生物学—植物学]