Effect of Growth Regulators in Rooting Performance of Stem Cuttings of some Shrub Species of Western Himalaya

Abstract

All the three shrub species under study recorded better results with regard to sprouting, call using and rooting under prolonged dip treatment in IBA and NAA for 24 hours as compared to a quick dip. The best rooting treatment in cuttings of species investigated is as follows- Woodfordia prolonged dip in 100 ppm NAA, Debregeasia prolonged dip in 50 ppm IBA and Coriaria prolonged dip in 100 ppm IBA. The number of roots in Woodfordia and Coriaria was maximum with a prolonged dip in NAA and in Debregeasia a quick dip in IBA provided maximum number of roots. Average root length was maximum with quick dips in NAA for all the three shrub species under study.