4种菊科入侵植物对莴苣种子萌发和幼苗生长的单一与复合化感作用  

Mono-and Co-Allelopathy of Four Asteraceae Invasive Plants on Seed Germination and Seedling Growth of Lactuca sativa

作　　者：朱马位 魏雨清 黄延康 徐仲毅 李闯 李玥 许哲伦 仲珊珊 杜道林 王从彦 ZHU Ma-wei;WEI Yu-qing;HUANG Yan-kang;XU Zhong-yi;LI Chuang;LI Yue;XU Zhe-lun;ZHONG Shan-shan;DU Dao-lin;WANG Cong-yan(School of the Environment and Safety Engineering,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]江苏大学环境与安全工程学院,江苏镇江212013

出　　处：《杂草学报》2023年第3期40-46,共7页Journal of Weed Science

基　　金：江苏大学大学生科研立项项目(编号:22A097、22A091)。

摘　　要：通过室内培养法分析4种菊科入侵植物加拿大一枝黄花(Solidago canadensis L.)、小飞蓬[Erigeron canadensis(L.) Cronq.]、鬼针草(Bidens pilosa L.)和钻叶紫菀[Symphyotrichum subulatum(Michx.) G. L. Nesom]对受试植物莴苣(Lactuca sativa L.)种子萌发和幼苗生长的单一化感作用与复合化感作用及其驱动机制。结果表明,这4种菊科入侵植物的化感溶液,不管是单一化感溶液,还是复合化感溶液,均显著抑制了莴苣的种子萌发和幼苗生长,特别是莴苣的种子萌发。更为重要的是,与单一化感作用相比,这4种菊科入侵植物对莴苣幼苗生长的复合化感作用存在一定程度的叠加效应。因此,随着入侵植物种类数量的增多,入侵植物可能通过更强的化感作用抑制其他植物的幼苗生长,从而有利于其进一步的入侵进程。This study aimed to analysised mono-and co-allelopathy of four Asteraceae invasive plants,Solidago canadensis L.,Erigeron canadensis(L.)Cronq.,Bidens pilosa L.,and Symphyotrichum subulatum(Michx.)G.L.Nesom,on seed germination and seedling growth of Lactuca sativa L.and their driving mechanisms.Mono-or co-allelopathic solutions of these four Asteraceae invasive plants significantly inhibited seed germination and seedling growth of L.sativa,especially the seed germination of L.sativa.More importantly,this co-allelopathy existed a certain degree of superposition effect comparing to their mono-allelopathy.Therefore,the invasive plants as the species of invasive plants increases might inhibit seedling growth of other plants via stronger allelopathy,thus facilitating their further invasion process.

关 键 词：化感作用 入侵植物 鬼针草 小飞蓬 加拿大一枝黄花 钻叶紫菀 

分 类 号：S451.221[农业科学—植物保护] Q948.1[生物学—植物学]