Research on the Autointoxication of Angelica sinensis

The autointoxication of Angelica sinensis was studied throught the experiment in seed germination and seedling growth of Angelica sinensis,Triticum aestivum,Brassica napus and Avena sativa with the root exudates from Angelica sinensis in water-culture.The results indicated that autointoxication of Angelica sinensis root exudates for 2 and 8 times-concentrated on Angelica sinensis root length showed very significant inhibition;the autointoxication of Angelica sinensis root exudates for 2 and 4 times-concentrated on Angelica sinensis seedling height and seedling dry weight showed significant promotion.From the comparison of allelopathic potentials and RI value of different plant,it can be seen that the Angelica sinensis root exudates did not show the obvious autointoxication,and it had relation with the releasing mode and act way.