Initial development of peach rootstock genotypes propagated by herbaceous cuttings

João Alison Alves Oliveira,Angelita Lorrayne Soares Lima Ragagnin,Danielle Fabíola Pereira Da Silva,Hildeu Ferreira Da Assunção,Francielly Rodrigues Gomes,Cláudio Horst Bruckner

doi:10.1590/0100-29452020626

João Alison Alves Oliveira, Angelita Lorrayne Soares Lima Ragagnin + Show 4 more

Open Access

https://doi.org/10.1590/0100-29452020626

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Abstract

Abstract The peach tree is a temperate fruit tree propagated by grafting with the scion cultivar and the rootstock from seeds, generating low uniformity, a viable alternative is propagation by herbaceous cuttings. The objective of this study was to evaluate the performance of different genotypes of peach rootstock propagated by herbaceous cuttings. The experiment was carried out with standardized cuttings of 15 cm in length treated with 3,000 mg L-1 of IBA solution, then were transplanted into 3 L polyethylene bags. A completely randomized design with five replications was adopted, each plot consisting of three plants. Sixteen peach genotypes from UFV breeding program were tested: 713-3, 713-6, 713-7, 713-10, 813-2, 813-3, 813-5, 813-15, 913-3, 913-6, 913-11, 913-17, C6, C7 and C8. After 80 days the following parameters were evaluated: stem length (cm), stem diameter (mm) and internode length (cm). Data were subjected to analysis of variance by the F test and averages compared by the Scott-Knott test at a 5% probability level with the GENES statistical software. It can be concluded that the lower initial development was observed in genotype 1113-11 and the highest initial development was from genotypes 713-13 and 813-5.

Highlights

The peach tree is propagated by grafting with the scion cultivar over the rootstock from seeds, the use of seeds increases genetic variability among the seedlings, making the propagation of the rootstocks by cuttings a viable practice, leading to production of clonal uniform seedlings with the same characteristics to the stock plant (TOMAZ et al, 2016)
This technique allows the shortly obtentions of commercial orchards with high genetic potential, because it ensure that the stock plant features are maintained, generating uniformity, precocity and high fruit quality (LATTUADA et al, 2011)
The part of the plant that is used is a factor to be considered on peach tree propagation, once herbaceous cuttings have a smaller lignification degree, that allows the transport of substances, plus, herbaceous cuttings have high levels of auxin, favoring the rooting and development of the cuttings (ROSA et al, 2017b)

Summary

Introduction

Desenvolvimento inicial de genótipos de porta-enxertos de pessegueiro propagados por estaquia herbácea E-mail: joao.alison@ yahoo.com.br(ORCID: 0000-0003-3821-7507) 2Agronomist, PhD, professor at Federal University of Jataí, Jataí – GO, Brazil. E-mail: bruckner@ufv.br (ORCID: 0000-0002-6249-3686) 4Agronomist, master in Agronomy (plant production), Federal University of Jataí, Jataí – GO, Brazil.

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