Regeneration and colonization abilities of invasive and native Myriophyllum species under different fragment types and lengths  

断枝类型和长度对入侵种和中国本地种狐尾藻再生和定殖能力的影响

作　　者：Min Zou Xiao-Wen Lin Xiao-Dong Wu Yuan Qin Xu-Guang Ge Jian-Jun Hou Xiao-Xia Li Shuang Peng 

机构地区：[1]College of Urban and Environmental Sciences,Hubei Normal University,Huangshi 435002,China [2]Huangshi Key Laboratory of Soil Pollution and Control,Hubei Normal University,Huangshi 435002,China [3]College of Life Sciences,Hubei Normal University,Huangshi 435002,China

出　　处：《Journal of Plant Ecology》2024年第6期279-290,共12页植物生态学报(英文版)

基　　金：supported by the Open Foundation of Hubei Key Laboratory of Pollutant Analysis&Reuse Technology(Hubei Normal University)(PA220103);the Open Foundation of Resource-exhausted City Transformation and Development Research Center(Hubei Normal University)(KF2024Y07);the Open Project Funding of Key Laboratory of Intelligent Health Perception and Ecological Restoration of Rivers and Lakes,Ministry of Education,Hubei University of Technology(HGKFYBP03);the College Students’Innovative Entrepreneurial Training Plan Program(202310513013,S202310513064).

摘　　要：Alien invasive species usually have strong regeneration and colonization abilities.However,whether invasive species have advantages in terms of regeneration and colonization abilities over native species requires further exploration.In this study,the effects of fragment types(with and without apical tips)and lengths(5,10 and 15 cm)on the regeneration and colonization abilities of the invasive Myriophyllum aquaticum and native M.spicatum in China were studied.Fragments of M.aquaticum and M.spicatum without apical tips had an advantage in branch formation,and their regeneration ability was stronger than that of fragments with apical tips.With longer initial fragments,the root length of M.aquaticum was longer and its colonization ability was stronger.This resulted in an increase in plant length,stem node number and biomass,with an increase in fragment length.However,the colonization ability of M.spicatum was not stronger with longer fragments.On the whole,native M.spicatum had stronger regeneration and colonization abilities than the invasive species M.aquaticum.However,M.aquaticum had a higher survival rate and plant length,enabling it to quickly occupy living spaces.Our results suggest that management needs to be strengthened for both M.aquaticum and M.spicatum to avoid biological invasion.外来入侵物种通常具有较强的再生和定殖能力。然而,入侵物种的再生和定殖能力是否比本地物种更具优势还需要进一步探究。本文研究了断枝类型(有顶芽和无顶芽)和长度(5、10、15 cm)对入侵种粉绿狐尾藻(Myriophyllum aquaticum)和中国本地种穗花狐尾藻(M.spicatum)再生和定殖能力的影响。无顶芽的粉绿狐尾藻和穗花狐尾藻断枝均在分枝形成方面具有优势,其再生能力强于有顶芽的断枝。初始断枝长度越长,粉绿狐尾藻的根长越长,定殖能力越强。这导致了粉绿狐尾藻植株长度,茎节数和生物量随着断枝起始长度的增加而增加。然而,穗花狐尾藻的定殖能力并不随断枝起始长度的增加而增强。总体而言,本地种穗花狐尾藻比入侵种粉绿狐尾藻具有更强的再生和定殖能力。然而,粉绿狐尾藻具有较高的存活率和植株长度,使其能够快速占据生存空间。上述研究结果表明,为了避免生物入侵,需同时加强对粉绿狐尾藻和穗花狐尾藻的管理。

关 键 词：Myriophyllum aquaticum M.spicatum REGENERATION COLONIZATION FRAGMENTS biological invasion 

分 类 号：Q94[生物学—植物学]