辣椒植株水浸液对蔬菜种子发芽的化感作用  

Allelopathy of Aqueous Extract of Hot Pepper Plant on Vegetable Seed Germination

作　　者：王广印[1] 孙晓娜[1] 谢玉会[2] 周秀梅[1,3] 

机构地区：[1]河南科技学院园林学院,河南新乡453003 [2]西南大学园艺园林学院,重庆400716 [3]北京林业大学园林学院,北京100083

出　　处：《江苏农业学报》2008年第5期616-623,共8页Jiangsu Journal of Agricultural Sciences

基　　金：河南省自然科学基金项目(0611031000);河南省教育厅科研项目(2007210012)

摘　　要：为了明确辣椒植株的化感作用,以萝卜、黄瓜、大白菜和番茄为受体,采用室内生物测定的方法,研究了辣椒全株、根、茎、叶水浸液的化感作用。测试结果用化感作用效应指数(RI)评价,以RI的相加平均值(SI)评价供体对受体在发芽期的化感作用强度。结果表明,辣椒全株、根、茎、叶水浸液对受体蔬菜种子发芽的影响依供体部位、水浸液浓度和受体不同而有差异。当辣椒全株水浸液浓度为0.01 g/m l时,对大白菜和萝卜种子的发芽有促进作用,根的水浸液对萝卜种子发芽亦表现为促进作用;当辣椒全株、根、茎、叶的水浸液浓度等于或大于0.02g/m l时,对4种蔬菜种子发芽均表现为抑制作用,且随着浓度的增大,抑制作用增强。综合而言,辣椒全株、根、茎、叶水浸液对不同受体蔬菜种子发芽的化感抑制程度不同,其化感作用强弱为叶>茎>全株>根。不同蔬菜种子发芽对辣椒植株各部位水浸液的化感敏感性也有差异,以番茄和大白菜的敏感性较强,萝卜和黄瓜较弱。In order to investigate the allelopathy of hot pepper, the effects of aqueous extracts from different parts of hot pepper on seed germination of radish, cucumber ,Chinese cabbage and tomato were determined by means of bioassay in laboratory. The allelopathic potential was represented by allelopathy response indexes （RI） at germination stage. The influences of aqueous extracts of hot pepper on vegetable seed germination varied with different donor parts, extract concentrations and receptors. The seed germination of Chinese cabbage and radish was improved by aqueous extract of whole hot pepper plant with concentra- tion of 0. 01 g/ml, and the seed germination of radish was improved by aqueous extract of root of hot pepper with concentration of 0. 01 g/ml. However, the seed germination of four kinds of vegetable was inhibited by aqueous extracts from whole plant, root, stem and leaf of hot pepper when the concentration was 0. 02 g/m1 or over. And the higher the concentration of aqueous extracts, the stronger inhibition on vegetable seed germination. The allelopathieal effect order of aqueous extracts from different parts of hop pepper on seed germination was leaf 〉 stem 〉 plant 〉 root. The allelopathical sensitivity to all donor extracts was different a- mong the tested vegetables ,with tomato and Chinese cabbage being more sensitive.

关 键 词：辣椒 水浸液 化感作用 种子萌发 

分 类 号：S630.1[农业科学—蔬菜学]