Effect of gamma rays on per cent survival of calli in carnation cultivars ‘Tempo’ and ‘Raggio-de Sole’

Abstract

The present study was conducted at Department of Floriculture and Landscaping, Dr Y S Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.) to analyse radiosensivity in calli of carnation for the development mutants. Calli of carnation culivars ‘Tempo’ and ‘Raggio de Sole’ were exposed to different doses of gamma rays (10 Gy, 20 Gy, 30 Gy, 40 Gy and 50 Gy). Lowest survival rate (53.42 per cent) was obtained at the highest dose of gamma irradiation (50 Gy). Survival rate of callus was more in cultivar ‘Tempo’ over ‘Raggio- de- Sole’. Among interactions, lowest survival rate of callus was observed in cultivar ‘Tempo’ at 50 Gy gamma rays.