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当前位置: 首页 > 文章 > 半夏根系分泌物化感作用研究 北方园艺 2017 (15) 129-135
Position: Home > Articles > Allelopathy of Root Exudates of Pinellia ternate Northern Horticulture 2017 (15) 129-135

半夏根系分泌物化感作用研究

作  者：
唐成林;罗夫来;赵致;魏光钰;杭烨;刘洪昌
单  位：
贵州大学农学院;贵州省中药材繁育与种植重点(工程)实验室
关键词：
半夏;根系分泌物;化感作用;自毒作用
摘  要：
以半夏根系分泌物及其不同极性组分为供试材料,半夏、莴笋、萝卜、白菜、苋菜为受试材料,采用生物测试的方法研究半夏根系分泌物对不同受试材料的化感效应。结果表明:半夏根系分泌物对萝卜、莴笋、半夏有化感抑制作用,作用强度为半夏>莴笋>萝卜。半夏根系分泌物的化感作用具有浓度效应,当浓度为1.122 3g·L~(-1)时,化感作用最强,对受试材料均呈化感抑制作用。半夏根系产生的化感自毒物质极性分布范围广,各极性部位产生自毒作用的强度不同,其中乙酸乙酯相最强,能强烈抑制半夏珠芽萌发和幼苗生长。根系分泌物可能是引起半夏连作障碍的原因之一,半夏根系分泌的化感物质具有一定选择性,只有在合适浓度、遇到合适受体时才会产生化感作用。半夏根系产生的化感自毒物质极性分布范围广,主要存在于乙酸乙酯部位,能强烈抑制半夏珠芽萌发和幼苗生长,可能是大田生产中半夏连作地出苗率低、倒苗严重的原因之一。
译  名：
Allelopathy of Root Exudates of Pinellia ternate
作  者：
TANG Chenglin;LUO Fulai;ZHAO Zhi;WEI Guangyu;HANG Ye;LIU Hongchang;Agricultural College,Guizhou University;Guizhou Key Laboratory of Propagation and Cultivation on Medicinal Plants;
关键词：
Pinellia ternate;;root exudates;;allelopathy;;autotoxins
摘  要：
To research the allelopathic effect of Pinellia ternate root secretions to different acceptor materials with bioassay method,Pinellia ternate root secretions and its different polar components were used as donor materials,and Pinellia ternate,asparagus lettuce,radish,Chinese cabbage and edible amaranth were used as acceptor materials.The results showed that Pinellia ternate root secretions had allelopathic inhibitory effects to Pinellia ternate,asparagus lettuce and radish,and the effective strength was the maximum to Pinellia ternate,followed by asparagus lettuce.The allelopathic effect of Pinellia ternate root secretions had concentration effect,and the allelopathic effect was the strongest with the concentration 1.122 3g·L~(-1),and showd allelopathic inhibitory effects to all acceptor materials.The allelochemicals produced by Pinellia ternate roots had a large polar scope,and the autotoxicity strength generated by different polarity parts was different,of which the autotoxicity strength generated by ethyl acetate extracts was the strongest,and could strongly inhibitor Pinellia ternate buldlet to germinate and seedling to grow.Root secretions might be one of the reasons that generates Pinellia ternate continuous cropping obstacle and one of the reasons that low emergence rate and serious sprout of Pinellia ternatein field,allelochemicals produced by Pinellia ternate root secretions had some selectivity,allelopathic effect showed only under suitable concentration and acceptors.

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