Author's Organization：Laboratory of Radiation Genetics, Faculty of Agriculture, University of Tokyo, Tokyo Laboratory of Radiation Genetics, Faculty of Agriculture, University of Tokyo, Tokyo
The time of onset of nucleic acid syntheses and mitosis have been determined especially in the first leaf meristem of germinating barley seed. These cells in the dormant barley seed remain at G1 and the synchronization of cell division is attained by proceeding them simultaneously to S phase with the seed soaking.
