Abstract:

The effect of five different radiation dosages of 60Co-γ ray on the Tagetes erecta was studied. The result showed that 80Gy and 160Gy were suitable for the Tagetes erecta seeds based on the influence of germination rate and the length of bud and root. 20Gy and 320Gy 60Co-γ ray radiation can restrict the germination rate and the growth of bud and root. But 60Co-γ ray radiation restricted the growth and kaihua.The stem height and inflorescence diamet of Tagetes erecta were smaller than comparison.