Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/22747
Tipo: Artigo
Título: Phytotoxic effects of essential oils in controlling weed species Digitaria horizontalis and Cenchrus echinatus
Autor(es): Reis, Marcelo Rodrigues dos
Ootani, Marcio Akio
Cangussu, Alex Sander Rodrigues
Capone, Aristoteles
Fidelis, Rodrigo Ribeiro
Oliveira, Wennder
Barros, Helio Bandeira
Portella, Augustus Caeser F.
Aguiar, Raimundo de Souza
Santos, Weder Ferreira dos
Abstract: In certain plant species, essential oils have been reported to inhibit seed germination and cause toxicity and have been associated with a loss of photosynthetic activity. This study aimed to evaluate the effects of essential oils and their major compound citronellal on the germination and growth of crabgrass (Digitaria horizontalis) and burrgrass (Cenchrus echinatus). Essential oils from E. citriodora and C. nardus and pure citronellal compound were used at concentrations of 1% and 10% and 20% to test seed germination and phytotoxic effects, respectively, in the plants. The treatments application was done when the plants were at the four-leaf stage. Seed germination was reduced drastically (97–99% reduction relative to untreated controls), with citronellal showing more drastic reductions than essential oils. In addition, evaluated the phytotoxic effects of essential oils on plant height and dry mass of shoots and roots were evaluated. The negative effects of the oils were seen 12 h following the treatment. The application of the oils at a concentration of 20% reduced the accumulation of dry mass of shoots and roots; however, the number of tiller only affected stomatal opening in burrgrass. Finally, the oils reduced chlorophyll and total protein content in the weeds by more than 80% and 90%, respectively. Therefore, these oils may have application as potential bioherbicides to controlling weeds.
Palavras-chave: Citronellal
Bioherbicide
Crabgrass
Burrgrass
Editor: Biocatalysis and Agricultural Biotechnology
Tipo de Acesso: 2017 Elsevier Ltd. All rights reserved.
URI: https://doi.org/10.1016/j.bcab.2017.08.016
http://www.locus.ufv.br/handle/123456789/22747
Data do documento: Out-2017
Aparece nas coleções:Fitotecnia - Artigos

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