向日葵水提液对马齿苋种子萌发及幼苗生长的化感作用  

Allelopathy Effect of Sunflower Water Extracts on Germination and Growth of Portulaca oleracea L. Seeds

作　　者：胡云[1] 刁锐琦[1] 胡涛[1] 

机构地区：[1]安顺学院农学院,贵州安顺561000

出　　处：《安徽农业科学》2014年第21期7070-7072,7075,共4页Journal of Anhui Agricultural Sciences

基　　金：贵州省科学技术基金项目(黔科合J字[2012]2011号)

摘　　要：[目的]探索向日葵不同部位水提液对马齿苋种子萌发及幼苗生长的化感作用。[方法]以发芽势、发芽率、芽长、根长和化感效应指数等作为测量指标,研究了向日葵不同部位的水提取液对马齿苋种子萌发及幼苗生长的化感作用。[结果]向日葵不同部位对马齿苋种子萌发及幼苗生长存在化感作用,且化感作用为抑制作用,其大小依次为茎、花、叶、根;不同部位水提液对马齿苋的抑制作用随着浓度的增大而增大。[结论]为农业综合防治及生产提供了理论依据。[Objective] The aim was to understand allelopathy effect of sunflower water extracts on germination and growth of P.oleracea seeds.[Method] The germination potential,germination rate,shoot length,root length and allelopathic effect index were as measurement indexes,allelopathy effect of sunflower water extracts on germination and growth of P.oleracea seeds was studied.[Result] Different parts of sunflower on germination and seedling growth of P.oleracea seeds had allelopathy,and the allelopathy was inhibition,and the inhibition of different parts was in order of stem ＞ flower ＞ leaf ＞ root.The inhibitory effects of different parts of sunflower on germination and seedling growth of P.oleracea seeds increased with the increase of concentration.[Conclusion] The research result provides theoretical basis for integrated pest control in agriculture and production.

关 键 词：向日葵 水提液 马齿苋 化感作用 

分 类 号：S435.655[农业科学—农业昆虫与害虫防治]