The use of allelopathic plants is an alternative technique for controlling weeds in sustainable crop production. This experiment evaluated the allelopathic potential of Murraya paniculata (L.) against four weeds viz...The use of allelopathic plants is an alternative technique for controlling weeds in sustainable crop production. This experiment evaluated the allelopathic potential of Murraya paniculata (L.) against four weeds viz., Bidens pilosa L., Amarathus spinosus L., Echinochloa crusgalli (L.) Beauv. and Chloris barbata Sw.. In laboratory test, aqueous extracts from M. paniculata leaves at concentrations of 12.5, 25, 50 and 100 g/L were tested on germination and seedling growth of the weeds. The extracts showed inhibitory effect, varying with weed species and extract concentration. Increase in concentrations increased the degree of inhibition. Concentration at 50 g/L and 100 g/L, completely inhibited seed germination of C. barbara and A. spinosus. Pot experiments were done in a glasshouse, with dry leaf powder as mulch on the soil surface at levels of 2, 4 and 8 t/ha. Dry leaf powder reduced the emergence and growth of all tested weeds, varying with dose and species. Chloris barbara is the most sensitive to M paniculata leaf mulch while E. crus-galli is the most resistant. These results suggest that M. paniculata had the potential lbr weed control and might be the source of a natural herbicide.展开更多
A comparison of the pharmacodynamic effects of two source plants of Murrayae Folium et Cacumen(MFC),Murraya exotica L.and Murraya paniculata(L.)Jack,was performed in order to supply reference for its multi-source rati...A comparison of the pharmacodynamic effects of two source plants of Murrayae Folium et Cacumen(MFC),Murraya exotica L.and Murraya paniculata(L.)Jack,was performed in order to supply reference for its multi-source rationality and interchangeability in clinical practice.According to the traditional efficacy of MFC,the effects of promoting Qi,relieving pain,promoting blood circulation and removing blood stasis were systematically evaluated by the models of writhing response in mice,foot swelling in rats,gastric emptying and small intestine propulsion in mice,and acute blood stasis in rats,respectively.The results showed that both M.exotica and M.paniculata could significantly inhibit the writhing reaction induced by acetic acid in mice and the paw swelling induced by carrageenan in rats,reduce IL-6,TNF-αand PGE2 levels in plasma of paw-swelling rats and increase gastric empty rate and intestinal propulsive rate.The above-mentioned effects were dose-dependent,and there was no significant difference between M.exotica and M.paniculata at the same doses.Therefore,M.exotica and M.paniculata had the similar anti-inflammatory,analgesic and gastrointestinal motility promotion effects,which provided a support for the pharmacodynamic equivalence of the multi-source plants of MFC.展开更多
文摘The use of allelopathic plants is an alternative technique for controlling weeds in sustainable crop production. This experiment evaluated the allelopathic potential of Murraya paniculata (L.) against four weeds viz., Bidens pilosa L., Amarathus spinosus L., Echinochloa crusgalli (L.) Beauv. and Chloris barbata Sw.. In laboratory test, aqueous extracts from M. paniculata leaves at concentrations of 12.5, 25, 50 and 100 g/L were tested on germination and seedling growth of the weeds. The extracts showed inhibitory effect, varying with weed species and extract concentration. Increase in concentrations increased the degree of inhibition. Concentration at 50 g/L and 100 g/L, completely inhibited seed germination of C. barbara and A. spinosus. Pot experiments were done in a glasshouse, with dry leaf powder as mulch on the soil surface at levels of 2, 4 and 8 t/ha. Dry leaf powder reduced the emergence and growth of all tested weeds, varying with dose and species. Chloris barbara is the most sensitive to M paniculata leaf mulch while E. crus-galli is the most resistant. These results suggest that M. paniculata had the potential lbr weed control and might be the source of a natural herbicide.
基金National Natural Science Foundation of China(Grant Nos.81773864,81473106)National Key R&D Program of China(Grant No.2019YFC1711000)。
文摘A comparison of the pharmacodynamic effects of two source plants of Murrayae Folium et Cacumen(MFC),Murraya exotica L.and Murraya paniculata(L.)Jack,was performed in order to supply reference for its multi-source rationality and interchangeability in clinical practice.According to the traditional efficacy of MFC,the effects of promoting Qi,relieving pain,promoting blood circulation and removing blood stasis were systematically evaluated by the models of writhing response in mice,foot swelling in rats,gastric emptying and small intestine propulsion in mice,and acute blood stasis in rats,respectively.The results showed that both M.exotica and M.paniculata could significantly inhibit the writhing reaction induced by acetic acid in mice and the paw swelling induced by carrageenan in rats,reduce IL-6,TNF-αand PGE2 levels in plasma of paw-swelling rats and increase gastric empty rate and intestinal propulsive rate.The above-mentioned effects were dose-dependent,and there was no significant difference between M.exotica and M.paniculata at the same doses.Therefore,M.exotica and M.paniculata had the similar anti-inflammatory,analgesic and gastrointestinal motility promotion effects,which provided a support for the pharmacodynamic equivalence of the multi-source plants of MFC.