Dry seeds of three kinds of adzuki beans(Jinhong1

Jihong9218

and Jingnong6) were irradiated by 60Co γ-rays to 100

200

300

400

500 and 600 Gy.The radiation effects on seedlings were analyzed to estimate the optimum dose

which was 400 to 600 Gy

based on the average half lethal dose(LD50) of 473.3 Gy for the three kinds of adzuki beans.The M1 γ-ray mutagenic effects were studied by farming the three kinds of adzuki beans irradiated to 350

500 and 650 Gy.It was found that the beans treated with higher doses had obvious inhibition on germination rate

seedling development

with significant or very significant difference compared with the CK.There was significantly negative correlation between seedling emergences

seedling height and doses.Irradiation affected mature plants by reducing plant height

decreasing nodes number of main stem

pods number per plant

seeds per pod and shortening pod length with significant.The order of radio-sensitivity to γ-rays was as follows: Jinhong1

Jihong9218

and Jingnong6.