African Journal of

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12257

Article in Press

Light spectrum and nutsedge (Cyperus rotundus L.) extract in photomorphogenesis and water consumption by pomegranate cuttings and microclimatic changes

João Paulo da Silva1, Rener Luciano de Souza Ferraz1*, Alexandre Eugênio da Silva2, Patrícia da Silva Costa3, Pedro Roberto Almeida Viégas4, Antonio Manoel da Silva Filho5, Mario Sergio de Araujo1, Alberto Soares de Melo2,8, Kaline de Souza Meira1, Aldair de Souza Medeiros6, Ivomberg Dourado Magalhães7

  •  Received: 05 April 2019
  •  Accepted: 15 July 2019
The purpose of this study was asses the influence of light spectrum and phytohormones variations on photomorphogenesis and water consumption by pomegranate cuttings and environmental microclimate changes. The research was carried out from August to November of 2018, on a completely randomized design, in a 4x4 factorial scheme, and with three replications. Four phytohormones concentrations (0, 25, 50, and 100%) and four light conditions (white, blue, red, and extreme red lights) were applied. The numbers of shoots were recorded weekly. The numbers of surviving roots and shoots were calculated 60 days after cutting planting. Throughout the experimental period, the environments were monitored to establish the illuminance, average air temperature, relative air humidity, average soil temperature, and evapotranspiration water consumption by the cuttings. Shoots were observed on the cuttings under white and blue lights with application of 0, 25, 50, and 100% of phytohormones. All microclimatic variables were influenced by light conditions. Variations in light spectrum and phytohormones concentrations influence photomorphogenesis and water consumption by pomegranate cuttings and promote environmental microclimate changes.

Keywords: Punica granatum, light quality, temperature, relative humidity, water requirement.