Author(s)

Gulzar Akhtar¹, Ahsan Akram¹, Yasar Sajjad^2*, Rashad Mukhtar Balal¹, Muhammad Adnan Shahid¹, Hasan Sardar³, Kaleem Naseem³, Shahid Masood Shah²

¹Department of Horticulture, University College of Agriculture, University of Sargodha, Pakistan.
²Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbottabad, Pakistan.
³Institute of Horticultural Sciences, University of Agriculture, Faisalabad, Pakistan.

Rosa centifolia is grown for its flowers which are used for essential oil extraction. It is vegetatively propagated through its cuttings which are difficult to root. This study was designed to increase the rooting percentage of cuttings by applying plant growth regulators (PGRs) with different levels. In total 31 treatments with different concentrations (450 ppm, 700 ppm and 950 ppm) of indole butyric acid (IBA), indole acetic acid (IAA), naphthalene acetic acid (NAA) alone, in combination and with same concentrations of 6-benzylamino purine (BAP) were used. Healthy similar sized cutting of R. centifolia was treated in solution of PGRs by quick dip method and planted in polythene bags. The data for shoot length, shoot dry weight, number of roots, root length and root dry weight were recorded. All three levels (450 ppm, 700 ppm and 950 ppm) of IBA alone produced maximum results in case of all parameters as compared to all other treatments. Among three levels of IBA, 450 ppm concentration produced maximum shoot length (10.67 cm), shoot dry weight (3.02 g), number of roots (14.00), root length (11.90 cm) and root dry weight (0.50 g). Lower concentrations of plant growth regulators produced better results as compared to higher concentrations.

Growth Regulator, Rosa centifolia, Auxins, Rooting, Shooting

Akhtar, G. , Akram, A. , Sajjad, Y. , Balal, R. , Shahid, M. , Sardar, H. , Naseem, K. and Shah, S. (2015) Potential of Plant Growth Regulators on Modulating Rooting of Rosa centifolia. American Journal of Plant Sciences, 6, 659-665. doi: 10.4236/ajps.2015.65071.