桉树油化学成分分析及α-松油醇的化感作用  

Chemical composition analysis of Eucalyptus essential oil and allelopathic effects of α-terpineol

作　　者：李奥欣 侯新村[2] 曾加佳 魏芸[1] LI Ao-xin;HOU Xin-cun;ZENG Jia-jia;WEI Yun(State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Research and Development Center for Grass and Environment,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China)

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029 [2]北京市农林科学院草业与环境研究发展中心,北京100097

出　　处：《应用生态学报》2020年第7期2195-2201,共7页Chinese Journal of Applied Ecology

基　　金：国家科技重大专项(2019ZX09301-114)资助。

摘　　要：采用水蒸气蒸馏法提取桉树油,通过GC-MS对其成分进行分析,以其中一种化学成分α-松油醇为代表,分别采用培养皿和盆栽试验研究其对反枝苋的化感作用。结果表明:水蒸气蒸馏法提取桉树油的产率为0.04%,经GC-MS分析,在桉树油中共检测到92种化学成分。在培养皿条件下,α-松油醇对反枝苋的发芽和生长均具有明显的抑制作用,用量达到每皿5和7.5μL时,抑制率均达到100%。盆栽条件下,α-松油醇处理过的土壤会显著影响反枝苋的出苗率、地上鲜重和地上干重,浓度达到1.6μL·cm-3时,抑制作用最大,其化感响应指数分别为-0.51、-0.62和-0.44,抑制率为51%、62%和44%。We extracted Eucalyptus essential oil by steam distillation and analyzed its chemical components by GC-MS.The inhibitory effects ofα-terpineol,a component in Eucalyptus essential oil,were tested in Petri dishes on the germination and growth of Amaranthus retroflexus.The allelopathic effects ofα-terpineol on A.retroflexus were examined with a pot experiment by measuring germination rate and biomass.The yield of essential oil was 0.04%.Ninety-two chemical components were detected from the essential oil.In Petri dish experiment,the germination inhibitory effect under 5μL and 7.5μL ofα-terpineol per dish reached 100%.In pot experiment,germination,aboveground fresh and dry weights of A.retroflexus were significantly affected byα-terpineol.At the concentration of 1.6μL·cm-3,the inhibition effect was strongest,with the allelopathic response index being-0.51 for germination,-0.62 for aboveground fresh weight,and-0.44 for aboveground dry weight,and the inhibition ratio being 51%,62%and 44%,respectively.

关 键 词：桉树 反枝苋 挥发油 Α-松油醇 

分 类 号：O657.63[理学—分析化学] TQ28[理学—化学]