Biological effects of gamma irradiation in oat (Avena sativa L.)

The seeds of three oat varieties viz., JO-1, Kent and JO 03-91 were exposed to seven different doses of gamma rays i.e. 200 Gy, 250 Gy, 300 Gy, 350 Gy, 400 Gy, 450 Gy and 500 Gy at Nuclear Research Laboratory, IARI, New Delhi. Radiation dose of 500 Gy proved most lethal and reduced the percentage of survived plants in oat varieties JO-1 (37.36%) and JO 03-91 (43.57%). Only one variety JO 03-91 has three morphological mutations were found at different doses i.e. 250 Gy, 350 Gy and 450 Gy and two chlorophyll mutations namely i.e. chlorina and yellow viridis was found in JO-1 (450Gy) and Kent (250Gy) in M-1 generation respectively.