Influence of Auxin Concentrations on Different Ornamental Plants Rooting

A Combination of IBA and NAA Resulted in Better Rooting and Shoot Sprouting than Single Auxin on Malay Apple [Syzygium malaccense (L.) Merr. & Perry] Stem Cuttings

“…Similar results were obtained in water apple (Syzygium javanica L.) air-layer, that 1000 ppm NAA was found to be more effective than IBA to promote root formation (Paul & Aditi, 2009). Appplication of various concentrations of NAA to cuttings of diffrerent ornamental plants resulted in the best root formation of different plants at different levels, i.e., 1000 ppm for syngonium, 3000 ppm for rosemary and Hedera helix, and 4000 ppm for gardenia (Abu-Zahra, Al-Shadaideh, Abubaker, & Qrunfleh, 2013). In a physiological study using Hemarthria compressa stem cuttings, Yan, Li, Zhang, Yang, Wan, Ma, Zhu, Peng, & Huang (2014) reported that the stimulatory effect of NAA to induce root formation was associated with a remarkable increase of polyfenol oxidase (POD) and inhibition of IAA-oxidase (IAAO) activities.…”

“…The success of plant propagation by cuttings is shown by the root and shoot formation and growth which is well documented to be affected by several factors, including genotypes, physiological and ontogenetic age of cuttings, endogenous hormone contents, type of woods, carbohydrate contents, preconditioning treatment of cuttings and external factors such as micro-environment of cuttings and the use of root promoting substances (Dirr & Heuser, 2006;Hartmann, Kester, Davies Jr., & Geneve, 2010). One of the most important and widely reported factors is the use of auxin such as IBA, NAA or a mixture of the two auxins as root promoting substance (AbuZahra, Al-Shadaideh, Abubaker, & Qrunfleh, 2013;Rahdari, Khosroabadi, Delfani, & Hoseini, 2014;Costa, Loss, Pereira, & Almeida, 2015). Vegetative propagation of five cultivars of local Malay apple by cuttings as affected by 1000 ppm NAA or 1000 ppm IAA with various media mixture was reported by Ryadin, Ranamukaarachchi, Soni, & Shrestha (2014), however, the rooting percentage and average number of roots were not recorded and since there was no control treatment for the auxins, it could not be concluded that the rooting of Malay apple cuttings was influenced by application of auxins.…”

“…Mixtures of two types of auxins are sometimes more effective than either component alone (Hartmann, Kester, Davies Jr., & Geneve, 2010). However, succesful results were often species or even clonedependent (Abu-Zahra, Al-Shadaideh, Abubaker, & Qrunfleh, 2013). Ryadin, Ranamukaarachchi, Soni, & Shrestha (2014) found that cuttings of five local cultivars of Malay apple in a mix media of top soil and sand with application of 1000 ppm NAA resulted in the best performance in producing shoots and roots, compared to 1000 ppm IAA with other media mixtures.…”

Maximum efficiency concentration of indole butyric acid in promoting the rooting of Japanese Flowering Cherry

“…The addition of auxin has been verified in many works and the necessary concentrations vary from species to species (ABU-ZAHRA et al, 2013). Generally, plants progressively respond to stimulation until an appropriate level of auxin, from which the increase in concentration becomes inhibitory or even phytotoxic (POP et al, 2011).…”

“…The production of seedlings by the plant macropropagation is characterized by the induction of root formation of cuttings and is subject to intrinsic characteristics of each species, as the Fragoso et al amount of endogenous auxin (ABU-ZAHRA et al, 2013). Environmental factors such as temperature, rainfall and photoperiod can influence the amount of free auxin on mother plants (NEGISHI et al, 2014), determining unsatisfactory levels for rooting (OSTERC & STAMPAR, 2011).…”