Data/hora: 09/06/2024 06:04:56

Biblioteca(s): 	Embrapa Amazônia Oriental.	
Data corrente: 	18/12/2009	
Data da última atualização: 	08/06/2022	
Autoria: 	ARRUDA, M. S. P.; ARAUJO, M. Q. de; LOBO, L. T.; SOUZA FILHO, A. P. de; ALVES, S. de M.; SANTOS, L. da S.; MULLER, A. H.; ARRUDA, A. C.; GUILHON, G. M. S. P.	
Afiliação: 	MARA S. P. ARRUDA, UFPA; MAURÍCIO Q. DE ARAÚJO; LÍVIA T. LÔBO; ANTONIO PEDRO DA SILVA SOUZA FILHO, CPATU; SERGIO DE MELLO ALVES, CPATU; LOURIVALDO DA S. SANTOS; ADOLFO H. MÜLLER; ALBERTO C. ARRUDA; GISELLE M. S. P. GUILHON.	
Título: 	Potential allelochemicals isolated from Pueraria phaseoloides.	
Ano de publicação: 	2005	
Fonte/Imprenta: 	Allelopathy Journal, v. 15, n. 2, p. 211-220, 2005.	
Idioma: 	Inglês	
Conteúdo: 	Two pyranoisotlavones, alpinumisoflavone and 4' -rnethyl-alpinumisoflavone and methyl 2-([3-D-glucopyranosyloxy) benzoatc were isolated trom the aerial parts of Pueraria phaseoloides. Phytotoxic effects of these compounds and of the P. phaseoloides hydroalcoholic extract fractions obtained by liquid-liquid partition were examined in Petri dish bioassay. The dichloromethanic and ethyl acetate tractions had a significant effect 011 seed germination of the weed species Mimosa pudim, showing 100 and 76 % inhibition, respectively. However, the three isolated compounds had a greater effect on radicle elongation of the weed species Mimosa pudim. Senna obtusifolia, Senna occidentalis and Urena lobata. 4'-Methylalpinumisoflavone at the highest dose tested (3.0 ppm) exhibited stronger inhibition (77 %) on S. obtusifolia, whereas, alpinumisotlavone at 3.0 ppm was more active (60% inhibition) on U. lobata and methyl 2-([3-D-glucopyranosyloxy) benzo ate at 4.0 ppm (the highest dose tested) showed significam inhibition (44 %) on M. pudim. Our experimental data showed that three natural products tested have selective herbicidal activity against weed species.	
Thesagro: 	Leguminosae.	
Thesaurus Nal: 	allelochemicals; allelopathy.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
Registro original: 	Embrapa Amazônia Oriental (CPATU)	
Exemplares: 	CPATU - (41979-1) - UPC - AP - DD -  -  -  - DIS