Division of Floriculture and Landscaping, Indian Agricultural Research Institute, New Delhi 110 012
*Present address: Asstt. Professor, Division of Floriculture, S.K.U.A.S.T., Shalimar 191 121.
Shoot explants were obtained from stock cultures of Rosa hybrida cv. Super Star maintained on Murashige and Skoog medium supplemented with BAP (2.0 mg/l) + NAA (0.1 mg/l). Shoots, 2.5 - 3.0 cm in height were, cultured in to conical flasks or jam bottles and incubated at 20 ± 2°C with a 16 h photoperiod supplied by cool fluorescent tubes. Roots were visible after 1 week of culture. IBA (0.5 mg/l) was found very effective and it recorded 87.66 percent rooting and produced 25.16 roots per shoot. It also hastened the process of root initiation.
