Physiological quality of cucurbits in spectral qualities

  • Denise Schmidt
  • Géssica Leticia Fritsch Wust University of São Paulo, Luiz de Queiroz College of Agriculture. Piracicaba, São Paulo, Brazil
  • Daniele Cristina Fontana University of São Paulo, Luiz de Queiroz College of Agriculture. Piracicaba, São Paulo, Brazil
  • Matheus Milani Pretto Federal University of Santa Maria, Campus Frederico Westphalen. Sete de Setembro Line, km 40, BR 386, s / n, CEP 98400-000, Frederico Westphalen, Rio Grande do Sul, Brazil
  • Jullie dos Santos Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
  • Axel Bruno Mariotto Federal University of Santa Maria, Campus Frederico Westphalen. Sete de Setembro Line, km 40, BR 386, s / n, CEP 98400-000, Frederico Westphalen, Rio Grande do Sul, Brazil
  • Gabrieli Cristina Vitalli de Azevedo
  • João Antonio de Cristo Federal University of Santa Maria, Campus Frederico Westphalen. Sete de Setembro Line, km 40, BR 386, s / n, CEP 98400-000, Frederico Westphalen, Rio Grande do Sul, Brazil

Abstract

The objective of this work was to evaluate the influence of spectral qualities on the germination and vigor of cucurbit seeds. This experiment was a completely randomized design, in a factorial scheme 3 x 6, with three species of cucurbitaceae: cucumber, melon and watermelon. Six spectral qualities were used: blue LED, white LED, red LED, blue + red LED, fluorescent and dark (no light). Variables related to germination and vigor were analyzed. The cucurbitaceae presented differentiated responses when submitted to the different spectral qualities. For cucumber seeds, the luminous spectra increased root length, compared to the dark treatment. The melon seeds had low physiological quality; for these, the dark promoted a higher percentage of germinated and normal seeds. For watermelon seeds, the white LED conditions led to a higher percentage of normal seedlings, high rate of germination (IVG) and lower percentage of dead seeds. Red LED conditioned high IVG in watermelon. In general, fluorescent light favors carotenoid content and the dark condition favors shoot length in cucurbit seeds.

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How to Cite
Schmidt, D., G. L. Fritsch Wust, D. C. Fontana, M. M. Pretto, J. dos Santos, A. B. Mariotto, G. C. V. de Azevedo, and J. A. de Cristo. “Physiological Quality of Cucurbits in Spectral Qualities”. Emirates Journal of Food and Agriculture, Vol. 32, no. 2, Mar. 2020, pp. 92-99, doi:https://doi.org/10.9755/ejfa.2020.v32.i2.2066. Accessed 7 June 2020.
Section
Research Article