韭菜水提液对3种蔬菜种子的化感作用  

Allelopathy Efects of Water Extract from Allium tuberosumon Vegetable Seeds

作　　者：江贵波[1] 陈少雄[1] 江晓玲[1] 杨银娇 聂耀龙 蔡玉玲[1] 

机构地区：[1]揭阳职业技术学院,广东揭阳522000

出　　处：《贵州农业科学》2014年第3期76-78,共3页Guizhou Agricultural Sciences

基　　金：广东省教育科学"十一五"规划课题"化感作用在化学探究性教学的实践与研究"(2010tjk335);揭阳市科技局项目"蟛蜞菊和韭菜的化感作用研究"(201127)

摘　　要：为解决生产实践中的连作障碍问题,以韭菜(Allium tuberosum Rottler.ex Spreng.)为供体,以其地上部分的水提液为化感物质,分别以白菜(Brassica chinensis L.)、油菜(Brassica campestris L.)和萝卜(Raphanus sativus L.)种子为受体,采用培养皿滤纸法进行化感试验,测定韭菜的茎叶水提液对油菜、白菜和萝卜幼苗的根长、苗高和鲜重的影响。结果表明:韭菜的地上部分的水提液对油菜、白菜和萝卜种子的萌发及其幼苗生长有明显的化感作用,且不同浓度水提液对蔬菜幼苗生长的影响存在差异,浓度为0.50g/mL时抑制作用最强。In order to solve the problem of continuous cropping barrier in production practice,taking Allium tuberosum as the donor,water extract of its aerial parts as allelochemicals and Brassica chinensis , Brassica campestris and Raphanus sativus seeds as the receptor,the effects of water extract of A.tuberosum on root length, seedling height and fresh weight of B.chinensis,B.campestris and R.sativus were studied by filter paper method with culture dish.Results：aerial part water extract had significant allelopathy on seed germination and seedling growth.Difference was observed among different concentrations of water extract （0.10 g/mL,0.25 g/mL,0.50 g/mL）.0.5 g/mL had the strongest inhibition effect.Root length of rape seedling of 0.10 g/mL,0.25 g/mL and 0.50 g/mL treatments was reduced by 98.3%,100.0% and 100.0% respectively compared with the control.And that of B.chinensis seedling was reduced by 97.1%,100.0% and 100.0% respectively,and R.sativus was reduced by 72.5%,91.2% and 98.7% separately.

关 键 词：韭菜 化感作用 水提液 蔬菜种子 

分 类 号：S13[农业科学—农业基础科学] Q948[生物学—植物学]