Effect of ⁶⁰CO-γ Rays Irradiation on Germination and Seedling Development of Siratro Seeds

Seeds of siratro were irradiated with 0-1 200 gy of ⁶⁰ CO-γrays to study the effects on the seed germination and seedling development.It was found that the irradiation retarded both.As the dose increased from 0to 800 gy,the inhibition effect increased.Beyond that,the effects on the seeds treated with 1 000 or 1 200 gy did not differ significantly(P>0.05).The seedling survival rate as observed on a seedling disk appeared to be a parabolic function with a peak at the doses of 200 gy and 1 000 gy,and the lowest at 800 gy.