Some studies on allelopathy of Rumex crispus L. and Polygonum segetum HBK., in Colombia
Curly dock (Rumex crispus, ‘lengua de vaca’) and smartweed (Polygonum segetum, ‘gualola’), are two common weed species that grow in subtropical areas of the world, where cause great losses in crops and grasslands due to their aggressiveness. In Colombia they are found on lands over 2000 m.o.s.l., an...
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| Formato: | article |
| Lenguaje: | Español |
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Corporación colombiana de investigación agropecuaria - AGROSAVIA
2019
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| Acceso en línea: | http://revistacta.agrosavia.co/index.php/revista/article/view/12 http://hdl.handle.net/20.500.12324/35071 |
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RepoAGROSAVIA35071 |
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dspace |
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Corporación Colombiana de Investigación Agropecuaria |
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Repositorio AGROSAVIA |
| language |
Español |
| topic |
Transversal |
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Transversal Gómez, Clemencia Arango, Ricardo Arévalo, Ligia Patricia Delgado, Cecilia Guzmán, Marta Rocío León, Sandra Milena Marentes, Diana Correa, Eliana María Vargas, Sandra Some studies on allelopathy of Rumex crispus L. and Polygonum segetum HBK., in Colombia |
| description |
Curly dock (Rumex crispus, ‘lengua de vaca’) and smartweed (Polygonum segetum, ‘gualola’), are two common weed species that grow in subtropical areas of the world, where cause great losses in crops and grasslands due to their aggressiveness. In Colombia they are found on lands over 2000 m.o.s.l., and as they propagate by both, sexual and vegetative ways, it is very difficult to manage them. Several experiments were carried out in order to standardize the extraction methods, identify the extracts due to secondary metabolism from plants of Rumex and Polygonum, and evaluate the effects of such compounds over the germination and development of various species of plants. It was possible, through bioassays, to establish that watery extracts from the leaves and the roots contain allelopathic substances that increase the competitive ability of these weed species. On the other hand, qualitative analyses allowed identifying several allelopathic compounds like flavonoids. Initial bioassays were conducted over three groups of plants of R. crispus through experiments with ethanolic extracts and colored tests that confirmed the presence of flavonoids, terpenes, sesquiterpenlactones, quinones, alcaloids, glycosides and cumarines in plants of smartweed in those three growth states. Chalcones, aurones and flavonoles were detected as well as antraquinone and terpene glucosides, but not so, alcaloides.These results could become useful for advancing studies since they amplify the knowledge about allelopathic substances of these weed species, and show their potential use in managing plant-weed relation programs. |
| format |
article |
| author |
Gómez, Clemencia Arango, Ricardo Arévalo, Ligia Patricia Delgado, Cecilia Guzmán, Marta Rocío León, Sandra Milena Marentes, Diana Correa, Eliana María Vargas, Sandra |
| author_facet |
Gómez, Clemencia Arango, Ricardo Arévalo, Ligia Patricia Delgado, Cecilia Guzmán, Marta Rocío León, Sandra Milena Marentes, Diana Correa, Eliana María Vargas, Sandra |
| author_sort |
Gómez, Clemencia |
| title |
Some studies on allelopathy of Rumex crispus L. and Polygonum segetum HBK., in Colombia |
| title_short |
Some studies on allelopathy of Rumex crispus L. and Polygonum segetum HBK., in Colombia |
| title_full |
Some studies on allelopathy of Rumex crispus L. and Polygonum segetum HBK., in Colombia |
| title_fullStr |
Some studies on allelopathy of Rumex crispus L. and Polygonum segetum HBK., in Colombia |
| title_full_unstemmed |
Some studies on allelopathy of Rumex crispus L. and Polygonum segetum HBK., in Colombia |
| title_sort |
some studies on allelopathy of rumex crispus l. and polygonum segetum hbk., in colombia |
| publisher |
Corporación colombiana de investigación agropecuaria - AGROSAVIA |
| publishDate |
2019 |
| url |
http://revistacta.agrosavia.co/index.php/revista/article/view/12 http://hdl.handle.net/20.500.12324/35071 |
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RepoAGROSAVIA350712023-10-18T13:16:12Z Some studies on allelopathy of Rumex crispus L. and Polygonum segetum HBK., in Colombia Algunos estudios de alelopatía de Rumex crispus L. y Polygonum segetum HBK., en Colombia. Gómez, Clemencia Arango, Ricardo Arévalo, Ligia Patricia Delgado, Cecilia Guzmán, Marta Rocío León, Sandra Milena Marentes, Diana Correa, Eliana María Vargas, Sandra Transversal Curly dock (Rumex crispus, ‘lengua de vaca’) and smartweed (Polygonum segetum, ‘gualola’), are two common weed species that grow in subtropical areas of the world, where cause great losses in crops and grasslands due to their aggressiveness. In Colombia they are found on lands over 2000 m.o.s.l., and as they propagate by both, sexual and vegetative ways, it is very difficult to manage them. Several experiments were carried out in order to standardize the extraction methods, identify the extracts due to secondary metabolism from plants of Rumex and Polygonum, and evaluate the effects of such compounds over the germination and development of various species of plants. It was possible, through bioassays, to establish that watery extracts from the leaves and the roots contain allelopathic substances that increase the competitive ability of these weed species. On the other hand, qualitative analyses allowed identifying several allelopathic compounds like flavonoids. Initial bioassays were conducted over three groups of plants of R. crispus through experiments with ethanolic extracts and colored tests that confirmed the presence of flavonoids, terpenes, sesquiterpenlactones, quinones, alcaloids, glycosides and cumarines in plants of smartweed in those three growth states. Chalcones, aurones and flavonoles were detected as well as antraquinone and terpene glucosides, but not so, alcaloides.These results could become useful for advancing studies since they amplify the knowledge about allelopathic substances of these weed species, and show their potential use in managing plant-weed relation programs. La lengua de vaca (Rumex crispus L.) y la gualola (Polygonum segetum HBK.), son espécies de malezas comunes que crecen en las áreas subtropicales del mundo donde ocasionan grandes pérdidas en cosechas y praderas debido a su agresividad. En Colombia se encuentran en zonas ubicadas por encima de los 2000 msnm, y son muy difíciles de manejar por su alta competitividad y gran habilidad para propagarse, tanto sexual como vegetativamente; a menudo crecen solas en un campo gracias a su capacidad para prevalecer sobre otras especies de plantas. Con el fin de estandarizar una metodología para la extracción e identificación de algunas sustancias provenientes del metabolismo secundario de las dos especies citadas, se realizaron experimentos para evaluar el efecto de tales compuestos sobre la geminación y desarrollo de especies agrícolas. A través de bioensayos se estableció que los extractos acuosos de hojas y raíces contenían varias sustancias alelopáticas: flavonoides, 5-deoxiflavonas, 7-8-dihidroflavononas y ácidos ferúlico, caféico y sinápico. Los extractos etanólicos de plántulas de Rumex crispus, en tres estados de crecimiento, permitieron confirmar la presencia de flavonoides, terpenos, sesquiterpenlactonas, quinonas, glicósidos y cumarinas, pero no de alcaloides. Por otra parte, mediante la utilización de células de Rumex crispus en suspensión, se logró aumentar la producción de flavonoides. El conocimiento de la eficacia de las sustancias alelopáticas de estas especies y su uso potencial puede llegar a ser de gran utilidad en programas de manejo de las relaciones planta-planta. 2019-08-09T19:29:51Z 2019-08-09T19:29:51Z 2003 article Artículo científico http://purl.org/coar/resource_type/c_2df8fbb1 info:eu-repo/semantics/article https://purl.org/redcol/resource_type/ART http://purl.org/coar/version/c_970fb48d4fbd8a85 http://revistacta.agrosavia.co/index.php/revista/article/view/12 10.21930/rcta.vol4_num1_art:12 http://hdl.handle.net/20.500.12324/35071 reponame:Biblioteca Digital Agropecuaria de Colombia repourl:https://repository.agrosavia.co instname:Corporación colombiana de investigación agropecuaria AGROSAVIA spa http://revistacta.agrosavia.co/index.php/revista/article/view/12/15 Attribution-NonCommercial-ShareAlike 4.0 International http://creativecommons.org/licenses/by-nc-sa/4.0/ info:eu-repo/semantics/openAccess application/pdf Corporación colombiana de investigación agropecuaria - AGROSAVIA Revista Ciencia y Tecnología Agropecuaria; Vol 4 No 1 (2003); 42-48 |