Abstract
Abstract Our study sought to evaluate the rooting capacity of indole butyric acid (IBA)-treated stem cuttings and the efficiency of the vegetative rescue technique of adult and transitional parent trees of Lecythis pisonis. Softwood, hardwood, and semi-hardwood leafless cuttings treated with IBA (0; 2,000; 4,000; 6,000; and 8,000 mg kg-1) were tested in a randomized block design with four replicates and 10 cuttings per plot. The growth of epicormic shoots was also evaluated in 60-cm branches removed from the tree canopy and kept in greenhouse for 60 days. Cuttings from adult trees did not form roots. Softwood cuttings from transitional trees had a very low rooting percentage. In both cases, no influence of IBA concentrations were observed. The use of the sectioned-branch technique was feasible for inducing sprouts.
Highlights
Sapucaia (Lecythis pisonis Cambess) is a native species to the Atlantic Rainforest and Amazon region (Smith, 2014), which belongs to the Lecythidaceae family
Our study sought to evaluate the rooting potential of IBAtreated stem cuttings obtained from adult and transitional sapucaia trees, as well as the viability of shoot production on branches removed from adult trees
Our study was conducted from October 2015 to April 2016 in a greenhouse at the experimental area of the Forest Sciences and Wood Department of the Universidade Federal do Espírito Santo (DCFM-CCAE-UFES), located in the municipality of Jerônimo Monteiro, ES
Summary
Sapucaia (Lecythis pisonis Cambess) is a native species to the Atlantic Rainforest and Amazon region (Smith, 2014), which belongs to the Lecythidaceae family. Sapucaia propagates mainly by seeds, with sowing occurring as soon as the seeds are extracted from the fruit (Lorenzi, 2008) due to their short viability (Garay et al, 2012). This species has a low natural frequency in the forests and blooms sporadically: some individuals bloom annually, and others each five years (Wickens, 1991). Seeds are fundamental for the food chain, since they are highly sought after by medium and large size animals (Inhetvin, 2010) All these factors contribute to a small annual seed production. Our study sought to evaluate the rooting potential of IBAtreated stem cuttings obtained from adult and transitional sapucaia trees, as well as the viability of shoot production on branches removed from adult trees
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