银胶菊水浸液对蔬菜种子萌发和幼苗生长的影响

The Effects of Aqueous Extracts from Parthenium hysterophorus L.on Seed Germination and Seedling Growth of Vegetables

[目的]研究银胶菊不同部位水浸液对蔬菜种子和幼苗的化感作用。[方法]以上海青和油麦2种蔬菜作物为受体,通过室内培养法,研究银胶菊不同部位水浸液对上海青和油麦种子萌发和幼苗生长的影响。[结果]银胶菊不同部位水浸液对上海青和油麦种子的萌发具有不同程度的抑制作用,且抑制作用大部分随处理浓度的增加而增强;对幼苗根长均具有抑制作用,而对苗高均表现出促进作用;对2种植物幼苗的鲜重也有一定的化感效应,有的表现为促进作用,有的表现为抑制作用。[结论]研究结果为银胶菊对植物的化感作用机理研究、银胶菊抑制植物生长的化感物质分离研究奠定了基础。

[Objective]To study the allelopathy effect of aqueous extracts from Parthenium hysterophorus L.on seed and seedling of vegetables.[Method]Taking Brassica campestris and Cichaorium endivia as receptor plants,the effects of aqueous extracts from P.hysterophorus on seed germination and early seedling growth of vegetables were studied by indoor Petri-dish method.[Result]The results showed that aqueous extracts from different organs of P.hysterophorus restrained the seed germination of B.campestris and C.endivia in some extend,and this inhibition mostly became strong as the concentration of extractions increased.All the extracts from P.hysterophorus suppressed the root length of B.campestris and C.endivia,but had an accelerating effect on the seedling height.Also,the aqueous extracts had some allelopathic effect on fresh weight of the two vegetables,some for the promoting effects and some for the inhibit effects.[Conclusion]These primary research results might provide the basis for the study of the allelopathy mechanism of P.hysterophorus and the separation of allelochemicals in P.hysterophorus which inhibit the growth of other plants