Abstract
By seeding various seeds with ion exchange resins in petri-dishes, the percentage of germination and growth of root after germination were improved or inhibited. There were many illustrations of improvement in Amberlite IRC-50 and IRA-410, and of inhibition in Amberlite IR-120 and IR-4B. Moreover, there was likely a cortain relation between the botanical classification and the classification according to the response to ion exchange resins
