Indian Agricultural Research Institute IARI, New Delhi
[From
Applied Mutational Breeding for Vegetatively propagated Crops, by C. Broertjes, 1988, p. 198-199:] Kaicker and Swarup (1972) treated dormant buds of three cultivars (Christian Dior, Kiss of Fire and Queen Elisabeth) with γ-rays (50, 75 and 100 Gy) or with one of several chemicals, including EMS, N-nitroso-N-methyl urethane (NMU) and ethylene imine (EI). Both methods seemed to be equally effective in the production of flower colour mutations, but the number of mutations obtained were too low for definite conclusions to be drawn. The same authors later reported that γ-rays are far more effective (Swarup et al., 1973). They obtained a variety of mutants, some of which were put on the market, such as 'Madhosh' (from 0.25% EMS treatment of 'Gulzar budwood; Kaicker and Swarup, 1978) and the mutant cultivars Abhisarika, Pusa Christiana and Striped Christian Dior (Kaicker, 1982)...It is not clear whether a few other interesting mutants, namely 'Orange Folkore' [sic] with tipped pink petals and 'Doris Tysterman' with fewer petals were marketed (Kaicker and Dhyani, 1985).
