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RESGATE E PROPAGAÇÃO VEGETATIVA DE Sequoia sempervirens

Authors: Márcio Carlos Navroski; Mariane De Oliveira Pereira; André Felipe Hess; Raul Silvestre; Alessandro Camargo Ângelo; Amanda Johann Fazzini; Allan Antunes Alvarenga;

RESGATE E PROPAGAÇÃO VEGETATIVA DE Sequoia sempervirens

Abstract

Objetivou-se com o estudo verificar resgate vegetativo, enraizamento de estacas e adaptação das mudas enraizadas em sistema de minijardim clonal de Sequoia sempervirens. Realizou-se a decepa de cinco indivíduos com 20 anos de idade e após foi contabilizada a capacidade de emissão de brotações. Com as brotações, foram confeccionadas estacas, as quais foram submetidas a diferentes concentrações de ácido indolacético (AIA) (0, 2000, 4000 e 6000 mg.L-1). Foram avaliadas a porcentagem de enraizamento e o número e comprimento de raízes 160 dias após o estaqueamento. O experimento foi instalado em DIC, com 5 repetições de 10 estacas. Após a formação das mudas com as estacas enraizadas, elas foram transplantadas para vasos, para a formação do minijardim clonal. O resgate vegetativo através da decepa de árvores apresentou potencialidade para produção de estacas de sequoia e revigoramento do material. O uso entre 2000 e 4000 mg.L-1 de AIA aumentou a porcentagem de enraizamento e também o número e comprimento de raízes formadas. O minijardim clonal de sequoia mostrou ser uma boa opção para a multiplicação clonal da espécie. A clonagem da sequoia pode auxiliar tanto no melhoramento convencional como em plantios comerciais da espécie, principalmente no Sul do Brasil, local onde encontra condições adequadas para seu crescimento.Palavras-chave: Silvicultura clonal; coníferas; rejuvenescimento; minijardim clonal. AbstractRescue and vegetative propagation of Sequoia sempervirens. The objective of the study to verify the vegetative rescue, rooting cuttings and rooted plants adapt in mini-clonal hedge of Sequoia sempervirens system. Was held coppicing five individuals aged 20 years old and was recorded after the ability to shoot emission. Shoots with different concentrations of indole acetic acid were applied (IAA) (0, 2000, 4000 and 6000 mg.L-1) in cuttings made by evaluating the percentage of rooting, number and length of roots 160 days after striking. The experiment was a completely randomized with five replicates of 10 cuttings. After the formation of seedlings with rooted cuttings, these were transplanted to pots for the formation of mini-clonal hedge. The vegetative rescue through coppicing trees showed potential for the production of cuttings sequoia and reinvigoration of the material. The use from 2000 to 4000 mg.L-1 IAA increased rooting percentage and the number and length of roots formed. The mini-clonal hedge of sequoia proved to be a good option for clonal multiplication of the species. Cloning of sequoia can help both conventional breeding and for commercial plantations of the species, especially in southern Brazil, where finds suitable conditions for their growth.Keywords: Clonal forestry; conifers; rejuvenation; mini-clonal hedge.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
7
Top 10%
Average
Average
gold