Substrate composition and indolebutyric acid on the propagation of Eplingiella fruticosa from cuttings

Abstract

Eplingiella fruticosa (Salzm. ex Benth.) Harley & J.F.B. Pastore, also known as “alecrim de vaqueiroâ€� or “cowboy rosemaryâ€�, is a woody, perennial, and aromatic shrub that growsin the states of northeast Brazil, with the exception of Alagoas, Maranhão, and PiauÃ. The plant is widely used in this region and has analgesic, vasodilator, anti-inflammatory, and larvicidal properties.The objective of this study was to evaluate the effect of different substrates and indolebutyric acid (IBA) on cuttings of E. fruticosa for identifying effective practices for the vegetative propagation of this species. Apical cuttings with a standardized length of 10cm and two pairs of leaves were harvested from mother plants in the vegetative stage. Two experiments were conducted: the first experiment tested the effect of three substrates (commercial, commercial + vermiculite, and commercial + vermiculite + humus) and the second experiment evaluated five concentrations of IBA (0.0, 1.0, 2.0, 3.0, and 4.0gL−1) and three growth periods (30, 45, and 60 days). The experimental design was randomized blocks with four replications. The analyzed variables were survival of cuttings, number of rooted cuttings, root length per cutting (RLC), number of buds per cutting (NBC), leaf dry mass (LDM), root dry mass (RDM), and total dry mass (TDM). In thefirst experiment,there were significant differences in RLC, NBC, LDM,RDM, and TDM, with a better growth using the commercial substrate. In the second experiment, there was no interaction between the evaluated parameters. However, there was a positive associated effect of IBA addition and the growth period on RLC, NBC, LDM, and RDM. The highest predicted value was attained for a concentration of 1.5g L−1IBA and a growth period of 60 days, for the above-mentioned variables.

Experimental Examination of Vegetative Propagation Methods of Nothofagus antarctica (G. Forst.) Oerst. for Restoration of Fire-Damaged Forest in Torres del Paine National Park, Chile

“…Multiple studies [29,34,48,49], however, have produced results that, like ours, indicate that NAA either alone or in combination with IBA has a better influence on rooting. On the other hand, although the results of our comparisons of IBA at different concentrations showed greater success in rooting cuttings using mid-and higher-IBA concentrations, some other studies have shown lower concentrations to be more favorable [32,33,44]. This is in keeping with the general observation that successful results are often species-or even clone-dependent [50].…”

“…This difference might be attributable to the difference in method of fungicide application, in that whereas we sprayed the cuttings after planting them, Acuña [21] dipped the bases of cuttings directly into the fungicide. Similarly, De Carvalho Silva et al [44], in an experiment examining the influence of the substrate on rooting cuttings of Eplingiella fruticosa (Salzm. ex Benth.)…”

“…Stevens and Pijut [36] IBA potassium salt (K-IBA) and (IBA) Juglans nigra highest De Carvalho Silva et al [44] 5 concentrations of IBA Eplingiella fruticosa 1.5 g•L −1 . Filho et al [51] indole-3-butyric acid (IBA) Khaya anthotheca 2.0 g•L −1 Kanmegne et al [43] indole-3-butyric acid (IBA) Cola anomala 5 a 10 g•L −1 Véras et al [33] indole-3-butyric acid (IBA) Spondias mombin 3.0 g•L −1 Chater et al [32] indole-3-butyric acid (IBA) Punica granatum 3.0 g•L −1 Akat et al [34] naphthaleneacetic acid (NAA) Nerium olenader 0.5 g•L −1 Justamante et al [48] IBA + NAA Argania spinosa 1 + 2 mg•L −1 Yusnita et al [29] IBA + NAA Syzygium malaccense 1 + 1 g•L −1 Yusnita et al [29] NAA Syzygium malaccense 2-4 g•L −1 Kaviani and Negahdar [49] IBA + NAA Buxus hyrcana -Cristofori et al [30] IBA + putrescine Corylus avellana 1 + 1.6 g•L −1 Rugini et al [52] IBA + putrescine Olea europaea 2 + 1.6 g•L −1 Gergoff Grozeff et al [31] sodium nitroprusside (SNP) + IBA Prunus insititia × P. domestica…”