园林植物刺桐对早熟禾的化感作用  

Allelopathy of Erythrina indica Lam on Poa annua L

作　　者：邓骛远[1] 罗通[1] 张剑[1] 黄娟[1] 孙蓉[1] 

机构地区：[1]宜宾学院生命科学与食品工程学院,四川宜宾644000

出　　处：《宜宾学院学报》2009年第12期96-98,共3页Journal of Yibin University

基　　金：宜宾学院学生科研项目(2008X41)

摘　　要：用生物测定法研究刺桐茎、叶浸提液对早熟禾萌发的化感作用,结果表明,刺桐的化感作用和供体植物的器官以及浸提液浓度密切相关.刺桐的化感作用总趋势为叶>茎.随浸提液浓度的加大,刺桐的化感作用增强.在实验设计的浸提液浓度范围内,0.100 g/ml的茎、叶浸提液对早熟禾种子萌发的化感作用最强.刺桐化感作用的研究为园林植物的选择提供了一定的理论依据.The allelopathy of Erythrina indica Lain on Poa annua L was studied by bioassay method. The result shows that the allelopathy has close relation with supporter organs and extracts concentrations. The general trend of the allelopathy is leaf 〉 stem. The allelopathy gradually strengthens with the increase of the extract concentrations. In the designed concentration range of the experiment the allelopathy of 0. 100 g/ml extract of Erythrina indica Lain is strongest. This study lays foundation for selecting plants in park.

关 键 词：刺桐 化感作用 早熟禾 种子萌发 方差分析 

分 类 号：Q949.99[生物学—植物学]