ABSTRACT An experimental concering the effect of gamma ra- diation (CO-60) dose in combination with colchicine con- centration upon young spodix of corn seeds (Zea mays L.) has been done in Wates Village, Magelang District, Central Java from February to April 1992. The radiation of corn seeds has been done at BATAN Jakarta. The type of soil is Latosol, with an altitude of 325 metre…