Inhibition of Conyza canadensis seed germination by extracts of medicinal plants
DOI:
https://doi.org/10.70151/8rzanh29Keywords:
Allelopathy, buva, Tabebuia sp., Lippia alba, Schinus molleAbstract
Conyza species, popularly known as horseweed, are invasive weeds and considered a big challenge for Brazilian agriculture. Many seeds are produced, easily dispersed and together with impacts of herbicide-resistant, they are some of the weeds most difficult to control. In Brazil, Conyza canadensis, belonging to this genus, shows glyphosate resistance and multiple herbicide resistance are observed in others countries. Weed control is important in agriculture and new strategies shoud be developed in order to contain these plants. In this context, studies with allelopathy have shown a promising alternative. The objective of this study was to evaluate the allelopathic effect and possible bioherbicida potential of plant extracts from white “ipê” (Tabebuia roseoalba), bushy matgrass, (Lippia alba) and false pepper (Schinus molle) on the weed C. canadensis seeds. The aqueous extracts were prepared by infusion at concentrations of 1 and 10%. The ethanolic extracts were obtained in a Soxhlet apparatus, followed by solvent evaporation. Subsequently, these extracts were diluted with distilled water at concentration of 1%. Only distilled water was used as control. The analyzed variables for all tests were germination percentage (%G) and germination speed index (GSI). The aqueous and ethanolic extracts (both 1%) inhibited the %G and showed a delay in germination. All 10% aqueous extracts, except those obtained from Tabebuia sp. leaves, affected the seeds germination. The alcoholic extracts were more effective in inhibiting the germination than the aqueous one. All extracts showed allelopathic and herbicide potential on C. canadensis seeds. The alcoholic extract of false pepper showed greater potential for bioherbicides studies.
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Alves LL, Oliveira PVA, França SC, Alves PLC, Pereira OS (2011) Atividade alelopática de extratos aquosos de plantas medicinais na germinação de Lactuca sativa L. e Bidens pilosa L. Rev Bras Plantas Med 13(3):328-336. https://doi.org/10.1590/S1516-05722011000300012.
Borella J, Martinazzo EG, Aumonde TZ (2011) Atividade alelopática de extratos de folhas de Schinus molle L. sobre a germinação e o crescimento inicial do rabanete. R Bras Bioci (9):398-404.
Brasil (2009) Ministério da Agricultura, Pecuária e Abastecimento. Regras para análise de sementes. Brasília: Mapa/ACS. 399p.
Corrêa MM (2005) Estudo fitoquímico da fração n-butanólica de Lippia alba (Mill.) N.E. Br. 117 p. Dissertação (Mestrado em Farmácia) - Universidade Federal de Santa Catarina, Florianópolis, Brasil.
Correia NM (2002) Palhadas de sorgo associadas ao herbicida imazamox no controle de plantas daninhas e no desenvolvimento da cultura da soja em sucessão. 58 p. Dissertação (Mestrado em Fitotecnia) – Universidade Federal de Lavras, Lavras, Brasil.
Dietrich SMC (1986) Inibidores de crescimento. In: Ferri MG (coord.). Fisiologia vegetal. 2 ed. São Paulo: EPU/EDUSP. p.193-212.
Ferreira AG, Aqüila MEA (2000) Alelopatia: uma área emergente da ecofisiologia. R Bras Fisiol Veg (12):175-204.
Galon L, Mossi AJ, Reichert Junior FW, Reik GG, Treichel H, Forte CT (2016) Manejo biológico de plantas daninhas – Breve revisão. Rev Bras Herb (15):116-125. https://doi.org/10.7824/rbh.v15i1.452.
Heap I (2017). in: http://www.weedscience.org/Home.aspx The International Survey of Herbicide Resistant Weeds.
Jakelaitis A, Silva AA, Ferreira LR, Silva AF, Pereira JL, Viana RG (2005) Efeitos de herbicidas no consórcio de milho com Brachiaria brizantha. Planta Daninha (23):69-78. https://doi.org/10.1590/S0100-83582005000100009.
Kissmann KG, Groth D (1992) Plantas infestantes e nocivas. São Paulo: Basf Brasileira, 798p.
Lawrence BM (1984) A discussion of Schinus molle and Schinus terebinthifolius. Perfum Flavor (9):65-69.
Lazaroto CA, Flec NG, Vidal RA (2008) Biologia e ecofisiologia de buva (Conyza bonariensis e Conyza canadensis). Cienc Rural (38):852-860. https://doi.org/10.1590/S0103-84782008000300045.
Maguire JD (1962) Speed of germination aid in selection and evaluation for seedling emergence and vigor. Crop Sci (2):176-177.
Marchaim U, Birk Y, Dovrat A, Berman T (1975) Kinetcs of the inhibition of cotton seeds germination by lucerne saponins. Plant Cell Physiol (16):857-864.
Mauli MM, Fortes AMT, Rosa DM, Piccolo G, Marques DS, Corsato JM, Leszczynski R (2009) Alelopatia de Leucena sobre soja e plantas invasoras. Rev Semin: Cienc Agra (30):55-62.
Moreland DE, Novitsky WP (1986) Effects of phenolic acids, coumarins and flavonoids on isolated chloroplasts and mitochondria. In: Waller, G. R. ed., Allelochemicals: role in Agriculture, Forestry and Ecology. Washington, D. C., ACS Symposium Series 330 – American Chemical Society. 1-261.
Nunes GL, Zonetti PC, Albrecht LP, Paulert R (2014) Alelopatia de extratos vegetais de Tabebuia sp. sobre a germinação de sementes de plantas infestantes em culturas agrícolas. J Agron Sci (3):1-9.
Pawlowski A, Soares GLG (2007) Inibição da germinação e do crescimento radicial de alface (Lactuca sativa cv. Grand Rapids) por extratos alcoólicos de espécies de Schinus L. Rev Bras Biocien (5):666-668.
Pires NM, Oliveira VR (2011) Alelopatia. In: De Oliveira JR RS, Constantin J, Inoue MH. Biologia e manejo de plantas daninhas. 22 ed. Curitiba, PR: Omnipax.1-30.
Reichel T, Silva KG, Albrecht LP, Zonetti PC (2013) Alelopatia do extrato de erva-cidreira (Lippia alba Mill.) em sementes de picão-preto (Bidens subalternans D.C.). J Agron Sci (2):161-168.
Reigosa MJ, Sánchez-Moreiras A, González L (1999) Ecophysiological approach in allelopathy. Crit Rev Plant Sci (18):577-608. https://doi.org/10.1080/07352689991309405
Rodrigues LRA, Rodrigues TJD, Reis RA (1992) Alelopatia em plantas forrageiras. Jaboticabal: UNESP/FUNEP, 1992. 18 p. Boletim.
Santos ACA, Rossato M, Agostini F, Almeida ML, Pauletti GF, Serafini LA, Moyna P, Dellacassa E (2007) Caracterização química de populações de Schinus molle L. do Rio Grande do Sul. Rev Bras Biocienc (5):1014-1016.
Santos VHM (2012) Potencial alelopático de extratos e frações de Neea theifera Oerst. (Nyctaginaceae) sobre sementes e plântulas de Lactuca sativa. 44 p. Dissertação (Mestrado em Ciências Biológicas) – Departamento de Botânica, Universidade Estadual Paulista, Botucatu, Brasil.
Stenlid G (1970) Flavonoids as inhibitors of formation of adenosine triphosphate in plant mitochondria. Phytochemistry (9):2251-2256.
Trezzi MM, Vidal RA, Xavier E, Rosin D, Balbinot JR. AA, Prates MA (2011) Resistência ao glyphosate em biótipos de buva (Conyza spp.) das regiões oeste e sudoeste do Paraná. Planta Daninha (29):1113-1120. https://doi.org/10.1590/S0100-83582011000500019
Vargas L, Bianchi MA, Rizzardi MA, Agostinetto D, Dal Magro T (2007) Buva (Conyza bonariensis) resistente ao glyphosate na região Sul do Brasil. Planta Daninha (25):573-578. https://doi.org/10.1590/S0100-83582007000300017
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