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《Journal of Anhui Normal University(Natural Science)》 2009-05
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The Preliminary Study on the Allelopathy of Leonurus Heterophyllus Sweet

WANG Qian,QIN Yi-ming,HUANG Yu-qing,NIE Liu-wang (College of Life Sciences,Anhui Normal University;The Provincial Key Lab.of the Conservation and Exploitation Research of Biological Resources in Anhui,Wuhu 241000,China)  
The allelopathic effects of different organs(root and stem-leaf) aqueous extract of Leonurus heterophyllus were studied with using two receptor plants(Lactuca sativa and Medicago sativa).Then,five solvents(water,ethanol,acetone,methanol and ethyl acetate) were used to extract the allelopathic substances of L.heterophyllus and the allelopathic potential of different extracts were bioassayied.The results showed that root and stem-leaf aqueous extracts of L.heterophyllus indicated obvious allelopthic effects on receptor seedlings growth.Stimulating effects were found in the lower concentration of every extracts especially in the root extract.Inhibitory effects were found in higher concentration especially stem-leaf extract,and its inhibition reached the largest effect at 100mg/mL(p0.01).The characteristics of allelopathic inhibitory effects were found at higher concentrations of L.heterophyllus stem-leaf extracts,and the promotion effects were shown at lower concentrations in different solvent,but there were differences in its effects.The stronger inhibitory effects of Ethyl acetate extract and aqueous extract indicated that the allelochemicals of L. heterophyllus maybe contain hydrophilic substances and liposoluble substances.
【Fund】: “生物环境与生态安全”安徽省重点实验室基金及安徽省科学与技术后备人选基金项目(2006-5)
【CateGory Index】: S567.219
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