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地肤地上部水浸提液对胡麻的化感机理研究
引用本文:赵利,党占海,梁建斌,牛俊义.地肤地上部水浸提液对胡麻的化感机理研究[J].杂草科学,2012,30(1):17-21.
作者姓名:赵利  党占海  梁建斌  牛俊义
作者单位:1. 甘肃省农业科学院作物研究所,甘肃兰州,730070
2. 甘肃农业大学,甘肃兰州,730070
基金项目:现代农业产业技术体系建设专项基金
摘    要:为了探明地肤地上部水浸提液对胡麻的化感机理,以盆栽试验结合实验室分析,研究了不同浓度的地肤地上部水浸提液对胡麻抗氧化性酶——超氧化物歧化酶(SOD)、过氧化物酶(POD)活性及脂质过氧化产物——丙二醛(MDA)含量的影响。结果表明,在不同浓度地肤地上部水浸提液胁迫下,胡麻的SOD、POD活性均随着胁迫时间的延长呈先升高后降低的趋势,MDA含量呈平稳上升趋势;在同一处理时间段,随着处理浓度的升高,SOD、POD活性促进(抑制)率变大,MDA含量增大。表明地肤地上部水浸提液化感物质对胡麻保护性酶活性和膜脂过氧化作用有重要影响。

关 键 词:地肤  水浸提液  化感作用  机理

Study on Allelopathic Mechanism of Stem and Leaf Extracts of Kochia scoparia (L.) Schrad.on Oil Flax
ZHAO Li , DANG Zhan-hai , LIANG Jian-bin , NIU Jun-yi.Study on Allelopathic Mechanism of Stem and Leaf Extracts of Kochia scoparia (L.) Schrad.on Oil Flax[J].Weed Science,2012,30(1):17-21.
Authors:ZHAO Li  DANG Zhan-hai  LIANG Jian-bin  NIU Jun-yi
Institution:1.Crop Research Institute,Gansu Academy of Agricultural Sciences,Lanzhou 730070,China; 2.College of Life Science and Technology,Gansu Agricultural University,Lanzhou 730070,China)
Abstract:In order to explore the allelopathic mechanism of K.scoparia on oil flax,effects of different concentrations of stem and leaf aqueous extract of K.scoparia on antioxidant enzymes(SOD,POD)activity and lipid peroxidation products MDA content of oil flax were tested via pot experiment and laboratory analysis.The results showed that under the stress with different concentration of stem and leaf aqueous extract of K.scoparia,SOD and POD activity of oil flax were increased firstly,then decreased as the stress period prolonged,while the MDA content in oil flax was steadily increased.At the same stressed period,the inhibition rate of SOD and POD activity was increased respectively,and MDA content increased as the extracts concentration increased.This results showed that the allelochemicals released from stem and leaf of K.scoparia had important role to effect protective enzyme activity and membrane liquid peroxidation of oil flax.
Keywords:K  scoparia  aqueous extracts  allelopathic  mechanism
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