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白三叶浸提液对四种杂草种子萌发和幼苗生理指标的影响

Chinese Journal of Grassland(2014)

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Abstract
通过测定白三叶植株水浸液对大籽蒿、辣子草、狗尾草和苘麻四种杂草种子萌发和幼苗生理代谢的影响,研究白三叶对杂草的化感作用及其机理.结果表明:化感物质为含有酚类物质的白三叶植株水浸液对四种杂草具有明显的化感作用,随着其浓度增加,对杂草种子的发芽势、发芽指数、苗高、胚根长、鲜重等抑制作用增强,低浓度白三叶植株水浸液在一些指标上表现为有促进作用.白三叶水浸液对杂草幼苗具有改变呼吸强度和膜透性、降低叶绿素含量等作用,并在一些生理指标上也表现出低促高抑的现象.
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Key words
White clover,Allelopathy,Weeds,Seedling growth
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