Comparative Experiment on Propagation by Cutting of Rosa hybrida ‘Parade’

In November 2016 and April 2017, current branches Rose hybrida ‘Parade’ were collected from Jurong, Jiangsu province.They were treated by different hormones with different concentrations and media.The results showed that water cutting had better be done in the spring, with cuttings soaked in 100 mg/L IBA+300 mg/L NAA for 2 hours.Rooting rate reached 98.5%, average root number of 15.8, average root length of 1.9 cm, root system index of 29.6 after 20 days.Propagation by cutting in substrate had better be taken in the autumn, with cuttings soaked in 100 mg/L IBA+100 mg/L NAA for 2 hours.Rooting rate reached 85.0%, average root number of 15.7, average root length of 3.9 cm, root system index of 52.0 after 45 days.Different propagations had different rooting.Cuttings in substrate had callus first and formed adventitious roots, while water cutting rooted from nodes.