Division of Genetics, Indian Agricultural Research Institute, New Delhi-12
1Present address: Genetics Branch, Forest Research Institute and Colleges, Dehra Dun, India.
2Present address: Institute of Radiobiology, Royal University of Stockholm, Sweden.
Six varieties of hexaploid wheat and one variety of diploid barley were grown under chronic exposure to gamma-rays during 1961–64, at the Gamma Garden, Indian Agricultural Research Institute, New Delhi, Three varieties N.P. 797, 798 and 836 under identical conditions responded differentially to characters like plant height, seed fertility, morphological abnormalities and viable mutations. An incidence of a phenotypic revertant for awn charater in N.P. 836 was observed. These varieties showed a recovery trend from the radiation injury. Barley studies revealed an interesting response to radiations when treated at different phases of growth and development.
