Physiological and Oxidative Effects of Native Piperaceae From Brazilian Amazon on Growth of Weed

Claudiene Rafalski, Alessandra de Rezende Ramos, Elizabeth Amelia Alves Duarte, Ilmarina Campos de Menezes, Thiago Alves Santos de Oliveira and Roseane Cavalcanti dos Santos

Journal of Agricultural Studies, 2020, vol. 8, issue 4, 651-669

Abstract: The use of bioherbicides for the sustainable management of weeds is one of the main challenges of agriculture. With this approach, the application of complex (crude) extract has shown to be inore efficient and less expensive due to phytotoxic (together) presence, than single, isolated, or majority compounds. In this perspective, the aqueous extract of the five Piper spp. (Piper divaricatum, P. hispidum, P. marginatum, P. peltatum, and P. reticulatum) native from the Amazon region, Brazil were used to evaluate the physiological and oxidative effects on the emergence and growth of common weeds under controlled conditions and in greenhouse. The extract obtained in sufficient quantity and the expected inhibitory effect was used in biochemical assays again with lettuce (indicator plant) and weeds seedlings, focusing on antioxidative enzymes activity. We verify the allelopathic potential of the P. divaricatum and P. peltatum, which caused high toxicity to lettuce and weeds seedlings in vitro and in vivo assays. In both Piper extract at 1.5%, the emergence inhibition of weed seedlings was up to 70%. This concentration also influenced the growth of seedlings. As to responses of antioxidative enzymes, we found that lettuce seedlings were widely affected by the exposition of Piper extracts (P. divaricatum and P. peltatum) at 5%, with an input of 89%, 300%, and 290% on SOD, CAT, and APX activities, respectively. Thus, Piper divaricatum and P. peltatum are potent allelopathic species that could contribute to minimize the damage of crops caused by weed competitions.

Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.macrothink.org/journal/index.php/jas/article/download/17755/13868 (application/pdf)
http://www.macrothink.org/journal/index.php/jas/article/view/17755 (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:mth:jas888:v:8:y:2020:i:4:p:651-669

Access Statistics for this article

Journal of Agricultural Studies is currently edited by Richard Williams

More articles in Journal of Agricultural Studies from Macrothink Institute
Bibliographic data for series maintained by Technical Support Office ( this e-mail address is bad, please contact ).