裂叶牵牛浸提液对几种种子萌发的化感作用 Allelopathy of extract from Ipomoea hederacea on some seeds

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裂叶牵牛浸提液对几种种子萌发的化感作用

Allelopathy of extract from Ipomoea hederacea on some seeds

采用生物测定法研究了裂叶牵牛[Ipomoea hederacea(L.) Jacq]水浸提液对小麦(Triticum aestivun L.)、白菜(Brassica pekinenss Rupr.)、早熟禾(Poa angustifolia Linn.)、鸡冠花(Celosia cristata L.)种子萌发和幼苗生长的影响.结果表明:(1)质量浓度为0.04 g·mL-1,0.08 g·mL-1,0.16 g·mL-1的裂叶牵牛水浸提液对小麦、白菜、早熟禾、鸡冠花均有抑制作用,抑制作用随着裂叶牵牛水浸提液质量浓度的增加而增强;(2)质量浓度为0.16 g·mL-1的裂叶牵牛水浸提液对四种种子萌发和幼苗生长具有很强的化感作用,SE值均达100%.

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作 者: 刘明久 周修任 许桂芳 汤晓洁  
作者单位:河南科技学院,河南,新乡,453003 
刊 名:生态环境  ISTIC PKU
英文刊名:ECOLOGY AND ENVIRONMENT 
年,卷(期):2008 17(3) 
分类号:Q948 
关键词:裂叶牵牛   化感作用   生物入侵   种子萌发  
机标关键词:裂叶牵牛水浸提液种子萌发质量浓度幼苗生长抑制作用早熟禾鸡冠花生物测定法小麦化感作用白菜增强影响 
基金项目:河南省科技攻关计划项目 
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