The effect of radiation on variability was investigated in plants of five varieties of China aster. grown from seeds pretreated with various doses of gamma rays (generation M1) and in the progeny of these plants (generation M2). Both in generation M1 and in M2 the frequency of occurrence of radiation induced changes varied. In the M1 generation. https://parisnaturalfoodes.shop/product-category/everyone-lotion-mint/