Gamma ray induced mutation in chrysanthemum

The rooted cuttings (uniform sized) of five standard cultivars of chrysanthemum viz., Snow Ball, Temptation, Raja, Eva Turner and Grape Bowl were treated with 0.5, 1.5 and 2.5 krad of gamma rays and these along with untreated (control) were planted in a completely randomized design with five pots per treatment. The main aim was to observe the extent of variation due to gamma rays for flower characters like days to flower bud visibility, days to full bloom, blooming period and size of flower. For understanding the extent of variation, within treatment variances were computed for each treatment