Propagation Strategies for Native Species in Forest Restoration: Efficiency of Substrates and Hormonal Treatments

Evania Gondim ¹, Josimara Nolasco Rondon ², Francilina Araujo Costa ³

This study identifies cost-effective propagation techniques for Solanum paniculatum, optimizing forest restoration efforts with minimal resource dependency.

Abstract

Background: Forest restoration using native species has spurred interest in optimizing seedling production to enhance survival and competitiveness in degraded areas. Larger seedlings are advantageous but often cost-prohibitive, emphasizing the need for efficient propagation methods. Vegetative propagation, particularly through cuttings, offers a viable solution for species with limited seed availability. However, research on substrate suitability and rooting performance in Cerrado species remains limited. Methods: This study evaluated the propagation potential of Miconia albicans, Croton urucurana, and Solanum paniculatum using apical cuttings treated with or without indole-3-butyric acid (IBA). Cuttings were grown in Cerrado soil and sand substrates within polyethylene bags under controlled conditions for 208 days. Rooting and leaf sprouting were assessed biweekly. Statistical analyses were performed using Chi-square tests and Tukey’s test at a 95% confidence level. Results: Substrate type did not significantly influence the rooting or sprouting success of the species. Solanum paniculatum demonstrated superior adaptability, achieving consistent rooting, shoot growth, and leaf production without IBA application, irrespective of substrate type. Conversely, Miconia albicans and Croton urucurana showed limited rooting success and no leaf production. The cost-effective method using polyethylene bags proved efficient for propagating S. paniculatum. Conclusion: Solanum paniculatum emerged as a robust candidate for vegetative propagation, suitable for ecological restoration projects, while further refinement is needed for Miconia albicans and Croton urucurana. The findings underscore the potential of simple, low-cost propagation methods to support forest restoration and sustainable nursery practices, particularly for small-scale producers.

Keywords: Forest restoration, Asexual propagation, Native species, Substrate efficiency, Solanum paniculatum

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