【摘要】 通过室内培养皿法,研究了银胶菊水浸提液对苘麻种子萌发和幼苗生长的影响。结果表明,根、茎、叶、花水浸提液的化感作用强度存在差异,花、叶水浸提液对苘麻的化感抑制强度高于根、茎,且抑制强度随处理浓度的升高而增强;在20%浓度下,花、叶水浸提液完全抑制苘麻幼苗生长,对苘麻种子萌发的抑制率分别为91.9%、78.4%。更多还原

【Abstract】 The allelopathic effects of an aqueous extract of Parthenium hysterophorus on the germination and seedling growth of Abutilon theophrasti were studied using an indoor Petri dish bioassay method.Aqueous extracts of roots,stems,leaves and flowers had differential allelopathic effects,the flower and leaf extracts were substantially more inhibitory on A.theophrasti than root and stem extracts,with the effect being stronger as the concentration of the extract increased.Seedling growth of A.theophrasti completely stopped at 20% concentration of aqueous extracts from flowers and leaves,which also suppressed germination for A.theophrasti by 92% and 78%,respectively.更多还原