Potential of Plant Growth Regulators on Modulating Rooting of <i>Rosa centifolia</i>

Abstract

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.

Studies on Effect of IBA Concentrations and Planting Times on Propagation of Different Varieties of Rose (Rosa hybrida Vill.)

“…ChristopherColombus and Vay Vicend. Similar results were reported by Akhtar et al [14] in Rosa centifoilia. Higher conc.…”

“…when cuttings of Eiffel Tower variety were treated with IBA 500 ppm and planted during February. These results of dry weight increase in shoots are in close conformity with the work of Akhatret al [14], reports that 450 ppm IBA was effective for producing maximum shoot length, shoot dry weight, number of roots and root dry weight. The treatment of cuttings with IBA had significant effect on number of leaves per cutting (Table 3).…”

Application of Indole Butyric Acid (IBA) to Improve the Quality of MD2 Pineapple Seedlings from Crown Shoots and Sapling Shoots

“…The largest number of roots in seedlings from sapling shoots was 128.67, and in crown shoots, it was 67.00. In line with the research results of [11] that there was a significant increase in the number of roots when IBA was applied to rose cuttings. Furthermore, administering auxin in solution or powder it can increase total of roots and increase opportunities success of seedlings propagated through cuttings [12].…”

Effect of growth regulator treatment on bud sprouting of hardwood cutting in different ornametal plants

“…Cong (1991) also reported that Prunus triloba cuttings treated with IBA 500 ppm and planted in earthen pots containing garden soil resulted in the maximum survival of plants. Akhtar et al (2015) observed that Rosa centifolia stem cuttings of treated with IBA 450 ppm produced maximum shoot length (10.67 cm). Ficus benjamina hard wood cuttings treated with IBA at 1000 ppm take minimum days to sprouting ( Ingole et al, 2016).…”