African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Full Length Research Paper

Can hydrogen peroxide and quercetin improve production of Eucalyptus grandis x Eucalyptus urophylla?

Débora Zanoni do Prado
  • Débora Zanoni do Prado
  • Department of Chemistry and Biochemistry, Universidade Estadual Paulista (UNESP), Botucatu, Brazil.
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Roberta Carvalho Dionizio1
  • Roberta Carvalho Dionizio1
  • Department of Chemistry and Biochemistry, Universidade Estadual Paulista (UNESP), Botucatu, Brazil.
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Fabio Vianello
  • Fabio Vianello
  • Department of Comparative Biomedicine and Food Science, University of Padua (UNIPD), Padua, Italy.
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Massimiliano Magro
  • Massimiliano Magro
  • Department of Comparative Biomedicine and Food Science, University of Padua (UNIPD), Padua, Italy.
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Giuseppina Pace Pereira Lima*
  • Giuseppina Pace Pereira Lima*
  • Department of Chemistry and Biochemistry, Universidade Estadual Paulista (UNESP), Botucatu, Brazil.
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  •  Received: 13 March 2014
  •  Accepted: 16 June 2014
  •  Published: 09 July 2014

Abstract

Vegetative propagation is considered the best choice for the rapid multiplication of plant species, however, rooting may still present difficulties. Substances, such as auxins, phenolic compounds and hydrogen peroxide, are recognized as able to improve this process. The aim of the present work was to determine if hydrogen peroxide in combination with quercetin or indole butyric acid, can modify some characteristics related to rooting and development in cuttings of Eucalyptus grandis x Eucalyptus urophylla. Cuttings were periodically evaluated at 30, 60 and 90 days according to the following criteria: height, diameter and survival percentage. After planting (90 days), a destructive evaluation was performed to determine rooting percentage, average size and number of roots. Polyamines content and polyamine oxidase activity, as biochemical markers of plant development, were determined. No statistically significant differences in height, diameter, survival and rooting percentage, root length and number of roots per cuttings were found. Treatments induced a decrease in putrescine levels and polyamine oxidase activity in roots. For absence of positive responses, the use of these substances as a treatment to improve cutting production is economically unviable.

 

Key words: Phenolic compounds, indole butyric acid, vegetative propagation, cuttings.

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