盐肤木叶水浸提液对2种常见杂草的化感作用

探讨盐肤木对常见农田杂草马唐、日本看麦娘的化感作用现象及机制。以盐肤木为供体,以马唐、日本看麦娘为受体,采用室内生物检测法研究盐肤木叶浸提液对杂草马唐、日本看麦娘的化感作用,并从组织细胞变化角度分析化感现象的作用机制。结果表明,经盐肤木叶浸提液处理后的杂草种子萌发率、苗高、鲜重显著降低,叶片表皮、叶肉细胞明显变小。盐肤木对杂草马唐、日本看麦娘具有明显的化感抑制作用。

Allelopathy of Leaf Water Extracts of Rhus chinensis Mill. on Two Common Weeds

Allelopathy phenomenon and mechanism of Rhus chinensis Mill. on common farmland weeds Digitaria sanguinalisand Aloecurusjaponicuswere explored. RhuschinensisMill.was used as donor and Digitariasanguinalis and Aloecurusjaponicuswere used as receptors. Allelopathic effects of leaf water extracts of RhuschinensisMill. on weed Digitaria sanguinalis and Aloecurus japonicus were studied by using indoor bioassay method. Allelopathy mechanism of allelopathy phenomenon was analysed from the point of view of tissue cell change too. The results showed that weed seed germination rate,seedling height and fresh weight remarkably decreased by treated with leaf water extracts of RhuschinensisMill.. Leaf epidermis and mesophyll cells obviously decreased too. It is obvious that RhuschinensisMill. has allelopathic inhibition effects to Digitariasanguinalisand Aloecurusjaponicus.