J Integr Plant Biol. ›› 1989, Vol. 31 ›› Issue (8): -.

• Research Articles •    

Autoradiographic Study of Gamma-Ray Induced Unscheduled DNA Synthesis in Bean Root Meristem Cells

Liu Zhen-sheng, Qiu Quan-fa, Chen Dong-li and Cong Yian-ying   

Abstract: The gamma-ray induced unscheduled DNA synthesis in root meristem cells of Vica faba was studied autoradiographically by calculating the number of cells with different 3H-thymidine labelling degree. It was found that the level of unscheduled synthesis in cells with intermediate dose (500 R) irradiation was higher than that in cells with lower dose (250 R) irradiation; however, higher dose (1000 R) irradiation would inhibit the reparative replication.

Key words: Bear, Gamma-ray, Unscheduled DNA synthesis, Autoradiography

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