Enraizamento de estacas de erva-baleeira em função de diferentes concentrações de ácido indol butírico e número de folhas

Adélia Maria Bischoff,Erik Nunes Gomes,Daniel William Vendramim,Renata De Almeida Maggioni,Mara Luana Engel,Katia Christina Zuffellato Ribas

doi:10.5965/223811711612017041

Adélia Maria Bischoff, Erik Nunes Gomes + Show 4 more

Open Access

https://doi.org/10.5965/223811711612017041

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Abstract

Varronia curassavica Jacq., black sage, is a medicinal plant with commercial interest due its anti-inflammatory properties. This species can be propagated by seeds, via vegetative propagation enabling the achievement of more uniform crops in relation to the agronomic and phytochemicals aspects. Thus, the present study aimed to evaluate the effect of different concentrations of indole butyric acid (IBA) and different leaf numbers in softwood stem cuttings of black sage plants. The experiment was conducted in august (winter season) in a factorial arrangement 3x2, with three different concentrations of IBA (0, 1500 and 3000 mg L-1) and two numbers of leaves (two leaves or one leaf). The experiment was conducted in a greenhouse under intermittent mist conditions. At 60 days after planting, the rooting percentage, number of roots per cutting, length of the three longest roots, percentage of cuttings with callus, percentage of live cuttings without roots nor callus, percentage of dead cuttings and percentage of cuttings with shoots were evaluated. There were significant differences for number of roots per cutting, which was higher at a concentration of 3000 mg L-1 compared to treatment without application of IBA (32.5%), and for percentage of cuttings with callus (15.0%), also higher were cuttings with two leaves at a concentration of 3000 mg L-1 IBA. For other factors there were no statistical differences between treatments. We conclude that the different number of leaves and IBA concentrations had little influence on the adventitious roots, mainly due to the winter season.

Highlights

Varronia curassavica Jacq., black sage, is a medicinal plant with commercial interest due its anti-inflammatory properties
There were significant differences for number of roots per cutting, which was higher at a concentration of 3000 mg L-1 compared to treatment without application of indole butyric acid (IBA) (32.5%), and for percentage of cuttings with callus (15.0%), higher were cuttings with two leaves at a concentration of 3000 mg L-1 IBA
Devido às propriedades terapêuticas da ervabaleeira, existe grande interesse na ampliação de estudos sobre a espécie, principalmente estudos voltados para a seleção de genótipos interessantes quanto aos seus aspectos agronômicos e a sua composição química (VAZ et al 2006)

Summary

MATERIAL E MÉTODOS

O material vegetal utilizado para a confecção das estacas foi coletado no mês de agosto de 2015, no período da manhã, a partir de plantas matrizes de três anos de idade, cultivadas no Setor de Plantas Medicinais e Aromáticas da Estação Experimental do Canguiri, Universidade Federal do Paraná. Os tratamentos consistiram da aplicação do regulador vegetal AIB em solução 50% hidroalcoólica, em três concentrações (0, 1500 e 3000 mg L-1) na base das estacas, por um período de 15 segundos, as quais continham uma ou duas folhas cortadas ao meio. O experimento foi conduzido num delineamento inteiramente casualizado em arranjo fatorial 3x2 (3 concentrações de AIB e dois números de folhas na estaca), com quatro repetições e 20 estacas por unidade experimental, totalizando 80 estacas por tratamento e 480 no total do experimento.

RESULTADOS E DISCUSSÃO

Findings

Uma folha Média