The % regeneration of plants in both the genotypes
gradually decreased with increase in the level of gamma
radiations. A total of 290 FR13A plants were obtained
which includes 220 untreated plants, 45 plants of GR 20
Kr and 25 plants of GR 25 Kr. Similarly, 416 FR43B
plants were obtained that includes 236 untreated plants,
130 plants with GR 20Kr and 48 plants of GR 25 Kr
(Table 1). When radiation treatment was increased up to 30 kr, all the calli derived from 30 kr treated grain showed
no regeneration at all in both the genotypes (Figure 3).