Ciência Rural (Jun 2016)

Shoot segment and substrate composition in rooting of juvenile ipe-roxo mini-cuttings

  • Nathalia Pimentel,
  • Dilson Antônio Bisognin,
  • Paula Kielse,
  • Kelen Haygert Lencina,
  • Uilian Stefanello Mello

DOI
https://doi.org/10.1590/0103-8478cr20140361
Journal volume & issue
Vol. 46, no. 6
pp. 996 – 1002

Abstract

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ABSTRACT: This study aimed to evaluate the rooting capability of apical and nodal mini-cuttings of ipe-roxo ( Handroanthus heptaphyllus ) in different substrates. Shoots produced from mini-stumps were fractioned into mini-cuttings 2-cm long apical or nodal mini-cuttings and treated with 1000 mg L-1 of indolebutyric acid (IBA). Four substrate combinations were evaluated: commercial substrate composed of pine bark and vermiculite in proportions of 1:1, 2:1 and 1:2 (v /v) and commercial substrate, vermiculite and sand in the proportion of 1:1:1 (v/v). The factorial experiment utilized a completely random design, with five replicates of four mini-cuttings. Rooting, shooting and survival percentage, number and length of shoots and roots were evaluated at 60 and 90 days of growth. Commercial substrate and vermiculite are a good combination for rooting mini-cuttings of ipe-roxo. Apical and nodal mini-cuttings exhibit similar rooting behavior and both are feasible for production of ipe- roxo plantlets.

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