Can hydrogen peroxide and quercetin improve production of Eucalyptus grandis x Eucalyptus urophylla?
Carregando...
Data
2014
Autores
Prado, Débora Zanoni do [UNESP]
Dionizio, Roberta Carvalho [UNESP]
Vianello, Fabio
Magro, Massimiliano
Lima, Giuseppina Pace Pereira [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
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.
Descrição
Palavras-chave
Phenolic compounds, Indole butyric acid, Vegetative propagation, Cuttings
Como citar
African Journal of Biotechnology, v. 13, n. 28, p. 2819-2829, 2014.