Germination and initial development of canola and radish submitted to castor leaves aqueous extracts

  • Carlos Alberto Gonsiorkiewicz Rigon Universidade Federal de Santa Maria, campus de Frederico Westphalen, RS
  • Adriana Tourinho Salamoni Universidade Federal do Rio Grande-FURG
  • Luan Cutti Universidade Federal de Santa Maria, campus de Frederico Westphalen, RS
  • Adalin Cezar Morais de Aguiar Universidade Federal de Santa Maria, campus de Frederico Westphalen, RS
Keywords: allelopathy, Brassica napus, Raphanus sativus, Ricinus communis

Abstract

This study aimed to evaluate the allelopathic activity of aqueous extracts of castor bean (Ricinus communis L.) leaves on germination and initial growth of canola (Brassica napus L.) and radish (Raphanus sativus L.) seedlings. Two experiments were conducted, usingcanola seeds for the first, which was installed in a 2x7 factorial scheme (with two photoperiods – dark and light and seven extracts concentrations - 0, 1, 2, 4, 8, 16 and 32%). The second experiment consisted of an evaluation of radish seed germination submitted to seven concentrations of the extracts in the dark photoperiod. The germination of the canola seeds was reduced in the dark, and the use of extracts at concentrations of 16% and 32%inhibited seeds germination for both studied photoperiods. The radish seed germination was completely inhibited when the concentration of 32% was used, however, at the concentrations of 4, 8 and 16% a reduction on rootand hypocoyl development of the seedlings were observed, affirming the high allelopathic potential of castor bean aqueous extracts on canola and radish.

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Author Biographies

Carlos Alberto Gonsiorkiewicz Rigon, Universidade Federal de Santa Maria, campus de Frederico Westphalen, RS

Departamento de Ciências Agronômicas e Ambientais.

Grande Área: Ciencia agrária, Agronomia, Fitossanidade

Adriana Tourinho Salamoni, Universidade Federal do Rio Grande-FURG
Prof. Dr. Dep. Engenharia Florestal. Área: Fisiologia Vegetal.
Luan Cutti, Universidade Federal de Santa Maria, campus de Frederico Westphalen, RS
Departamento de Ciências Agronômicas e Ambientais.
Adalin Cezar Morais de Aguiar, Universidade Federal de Santa Maria, campus de Frederico Westphalen, RS
Departamento de Ciências Agronômicas e Ambientais
Published
10-05-2016
How to Cite
Rigon, C. A. G., Salamoni, A. T., Cutti, L., & Aguiar, A. C. M. de. (2016). Germination and initial development of canola and radish submitted to castor leaves aqueous extracts. Comunicata Scientiae, 7(1), 104-111. https://doi.org/10.14295/cs.v7i1.423
Section
Original Article