Minicutting technique and IBA application in vegetative propagation of Schinus terebinthifolia Raddi

Felipe Bueno Dutra,Emerson Viveiros,Bruno Dos Santos Francisco,Raquel Passaretti,Rafael Paranhos Martins,Lausanne Soraya De Almeida,Fatima Conceição Márquez Piña-Rodrigues,José Mauro Santana Da Silva,Ivonir Piotrowski Santos

doi:10.33448/rsd-v10i14.22610

Abstract

Vegetative propagation is an alternative for the production of seedlings of native tree species such as Schinus terebinthifolia that presents a high predation rate on its seeds. In order to develop vegetative propagation technology, different concentrations of indolebutyric acid (IBA) were tested in the rooting of apical and intermediate minicuttings of Schinus terebinthifolia. The 2x4 factorial experimental design involved two types of minicuttings (apical and intermediate) and four dosages of the hormone IBA (0, 1000, 2000, and 4000 mg. L-1). The percentages of survival and rooting were evaluated. The intermediate minicuttings (37% and 35%) showed significantly greater survival than the apical cuttings (22% and 9%) respectively at 30 and 60 days, regardless of the IBA concentration. Among the rooting averages at 60 days obtained in the different concentrations of IBA, the treatment of 4000 mg. L-1 generated the highest results (9% for apical and 35% for intermediate). The vegetative propagation by minicuttings of Schinus terebinthifolia demonstrated the viability of intermediate minicuttings with high rooting associated with the highest concentration of IBA.

Highlights

Schinus terebinthifolia is a native Brazilian tree commonly known as aroeira-vermelha, aroeira-pimenteira or pimenta-rosa, belonging to the Anacardiaceae family
Macbr., which, with the use of indolebutyric acid (IBA) with different minicuttings, showed rooting variation of 0% for H. courbaril and 40% for A. leiocarpa (Freire et al, 2019). These results indicate the need to generate more studies on the vegetative propagation of native forest species, as responses vary according to species, growth hormone dosage, and type of minicuttings
For apical cuttings the highest survival rate at 30 days occurred at the highest IBA concentrations; the survival rates of intermediate cuttings were higher for all IBA concentrations (Table 1)

Summary

Introduction

Schinus terebinthifolia is a native Brazilian tree commonly known as aroeira-vermelha, aroeira-pimenteira or pimenta-rosa, belonging to the Anacardiaceae family. The species is intensely predated by the wasp Megastigmus transvaalensis (Hymenoptera: Torymidae) which attacks its fruit, damaging its seeds and compromising its germination potential (Ferreira-Filho et al, 2015) For this reason, techniques of vegetative propagation can be an alternative for the production of this and other forest species for use in the ecological restoration of degraded areas, as well as for silvicultural purposes in food production, and in the rescue and conservation of genetic resources (Ledig et al, 1992; Erikisson and Fröborg, 1996; De Oliveira et al, 2020; Viveiros et al., 2021). The technique can be used when the availability of seeds from a matrix is low or presents difficulties in storage and germination (Jesus et al, 2020)

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