Seasonal variations in the frequency of spontaneous mutations in Canna

Abstract The frequency of spontaneously occurring mutations were recorded in the Canna var. “ Striped Queen ” over a period of two years. The studies have indicated that the mutation rate was high from January to April and low from July to September. Among the floral parts, petals showed the highest mutation rate followed by sepals and staminodes. The size of the mutant sector also varied according to the stage at which the mutations occurred.