紫茎泽兰和一年蓬浸提液化感作用的对比研究  

Allelopathy of Water-extracted Solution of Eupatorium adenophorum and Erigeron annuus on the Sprouting of Radish Seeds

作　　者：谭永钦[1] 胡兵[1] 熊程[1] 李丽[1] 王永模[1] 

机构地区：[1]华中农业大学植物科学技术学院,武汉430070

出　　处：《湖北农业科学》2011年第11期2250-2253,共4页Hubei Agricultural Sciences

基　　金：农业部公益性行业科研专项(20080321-050)

摘　　要：采用根、茎和叶浸提液培养萝卜种子的方法研究了紫茎泽兰的化感作用,同时与本地杂草一年蓬的化感作用进行了比较。试验结果表明,紫茎泽兰各部位的浸提液对萝卜种子的萌发普遍具有抑制作用,化感强弱顺序为:叶﹥根﹥茎;在0.40g/mL的浓度下,紫茎泽兰根、茎、叶浸提液对萝卜种子胚根和胚芽的抑制作用均显著大于同浓度的一年蓬浸提液和空白对照组,表明紫茎泽兰比一年蓬具有更强的化感作用。紫茎泽兰化感作用在传播入侵过程中起着重要的作用,在与本地杂草竞争时具有优势。The allelopathy of Eupatorium adenophorum was studied by cultivating radish seeds in the water extraction of Eupatorium adenophorum root,stem and leaves,and compared with that of Erigeron annuus.Results showed that the extraction of Eupatorium adenophorum from every partion had inhibitory effect on sprouting of radish seeds;and the order of allelopathy was leaferootstem.At the concentration of 0.40 g/mL,the allelopathy of extration from Eupatorium adenophorum was stronger than that of Erigeron annuus and control,which meant that Eupatorium adenophorum had stronger allelopathy.It was suggested that allelopathy meda Eupatorium adenophorum more competitive than the local weeds,thus played an important role in its invasion and spreading.

关 键 词：紫茎泽兰 一年蓬 浸提液 萌发 化感作用 

分 类 号：S451[农业科学—植物保护]