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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad de Costa Rica
2019
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| Online Access: | https://www.redalyc.org/articulo.oa?id=44965908022 https://www.redalyc.org/journal/449/44965908022/ https://www.redalyc.org/journal/449/44965908022/html/ https://www.redalyc.org/journal/449/44965908022/44965908022.epub https://www.redalyc.org/journal/449/44965908022/movil |
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Table of Contents:
- Allelopathic potential of 73 weed species in Pakistan Sadiqullah Khan Muhammad Ibrar Shinwari Khawaja Waqar Ali Tabassum Rana Saima Kalsoom Said Akbar Khan Biología Bioassay allelopathy phytochemicals sandwich method dish pack method Introduction: Use of allelochemicals as inexpensive, biodegradable and eco-friendly substitutes for the management of weeds in crops is a central topic nowadays. Objective: The current study represented the comprehensive screening of allelopathic activity of 73 weeds in Pakistan by the Sandwich method and dish pack method. To investigate the allelochemical compound in top most allelopathic weed. Methods: Allelopathic effects of selected weeds leaves leachate were determined through sandwich technique, while volatile allelopathic effects through dish pack techniques. Qualitative and quantitative phytochemical techniques were applied to investigate allelochemical potential of Melilotus indicus. The statistical analysis of the data described the allelopathic effect of 73 weed plants on lettuce seedling growth in terms of radicle and hypocotyl elongation. Results: Elongation percentage of radicle and hypocotyl ranged 0-74 % to 0-148 % and 0-75 % to 0-84 % respectively at 10 mg concentration of dry plant powder in sandwich method while it was 2-234 % and 7-150 % at in Dish Pack method. Among the plants screened for phytotoxic activity, M. indicus contained the strongest allelochemicals. Qualitative and quantitative analysis of M. indicus showed the presence of flavonoids and phenolic compound along with other allelochemical. Conclusions: Selected weeds may have strong allelochemical potential that can help in the development of bioactive compounds from plant species to be used as natural herbicides and pesticides for sustainable management of weeds and pest. 2019 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44965908022 https://www.redalyc.org/journal/449/44965908022/ https://www.redalyc.org/journal/449/44965908022/html/ https://www.redalyc.org/journal/449/44965908022/44965908022.epub https://www.redalyc.org/journal/449/44965908022/movil DOI 10.15517/RBT.V67I6.34787 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.6 Vol.67