Allelopathy effects of Aconitum leucostomum aqueous extract on seed germination of four forage species

Effects of root and stemleaf aqueous extracts of Aconitum leucostomum on seed germination of 4 forages was studied in a pot culture. experiment The result showed that the aqueous extracts of root and stemleaf of A. leucostomum inhibited seed germination rates and germination indexes of the forages. Inhibition of root aqueous extract on germination rates and germination indexes was more severe than those of stemleaf aqueous extract. The inhibiting effect on germination indexes was greater than on germination rates. The inhibiting effect was increased with the increase of concentration of aqueous extracts. The order of allelopathic sensitivity to A. leucostomum aqueous extracts was Bromus inermis＞Lolium perenne＞Poa pratensis＞Festuca arundinacea.