曼陀罗对大豆的化感作用研究  

Allelopathic Effect of Dature stramonium on Soybean

作　　者：段磊[1] 梁婷婷[1] 冉俊祥[2] 徐宁[2] 慕小倩 段军娜[3] 

机构地区：[1]西北农林科技大学生命科学学院,陕西杨凌712100 [2]南通出入境检验检疫局,江苏南通226005 [3]西北农林科技大学植物保护学院,陕西杨凌712100

出　　处：《西北农业学报》2012年第2期83-87,共5页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：公益性行业(农业)专项(200903052)

摘　　要：采用室内生物测定方法,分别测定曼陀罗根、果皮、种子浸提液对大豆种子萌发、幼苗生长及若干生理指标的影响。结果表明,曼陀罗对大豆的化感效应存在不同供体器官的差异,总体表现为根>果皮>种子;受体器官所受到的抑制作用也存在差异,总体表现为侧根>种子>根。曼陀罗对大豆的化感效应随其浸提液的质量浓度提高而增强。其生理指标测定结果表明,曼陀罗对大豆幼苗可溶性蛋白的分解有较大的抑制作用。Using laboratory bioassay,this paper studied the effects of Dature stramonium extract on the germination rate,germination index,root length,lateral root number of soybean,and measured the soluble protein content and protease activity.The results showed that the allelopathic effects of D.stramonium differed with donor sites,which were in the order of root peel seed.As to receptor,the soybean root growth was more seriously inhibited than germination,especially lateral root growth.The allelopathic effects of D.stramonium extract were improved with concentration increasing.The results of physiological index indicated that D.stramonium,which mainly suppressed decomposition of soybean soluble protein,had lower inhibition effect on of storage protein hydrolysis.

关 键 词：曼陀罗 大豆 化感作用 

分 类 号：S452[农业科学—植物保护]