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F Lamchouri A Settaf Y Cherrah M Hassar M Zemzami N Atif E B Nadori A Zaid B Lyoussi 《Fitoterapia》2000,71(1):50-54
The alkaloidic fraction of the methanol extract of Peganum harmala seeds was tested in vitro on three tumoral cell-lines: UCP-Med and Med-mek carcinoma, and UCP-Med sarcoma. Proliferation was significantly reduced at all tested concentrations (20-120 micrograms/ml) during the first 24 h of contact. A cell lysis effect occurred after 24 h and increased thereafter to complete cell death within 48-72 h, depending on tested concentration. 相似文献
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Embelin, a benzoquinone-derivative isolated from Embelia ribes, when tested for its antibacterial potential exhibited significant inhibition against five and moderate activity against three strains of the 12 bacteria tested. 相似文献
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Western red cedar (Thuja plicata Donn) seedlings were grown in a greenhouse and subjected to six nursery cultural treatments (long-day wet (LDW), long-day moderate (LDM), long-day dry (LDD), short-day wet (SDW), short-day moderate (SDM), and short-day dry (SDD)) during mid-summer. Seedling attributes were measured before fall and spring planting.Short-day and moisture stress treatments reduced shoot but not root growth, resulting in reduced shoot to root ratios. Fall tested LDW seedlings had a higher osmotic potential at saturation and turgor loss point than other treatments. Fall tested short-day seedlings had lower resistance to plant water movement. The LDW seedlings had the greatest new root growth in fall testing, while one of the lowest in spring testing. In the fall, LDW seedlings had the greatest net photosynthesis (Pn) at 25 °C root temperature, with all treatments having a similar decline in Pn as root temperatures decreased to 1 °C. In the spring, all treatments had a similar decline in Pn with decreasing predawn shoot water potential. Moisture stress and short-day nursery cultural treatments applied in mid-summer will not harden western red cedar seedlings for all potential field conditions.Spring, compared to fall, tested seedlings had two times the shoot and three times the root dry weight. Spring tested seedlings had a lower osmotic potential, maximum modulus of elasticity, relative water content at turgor loss point and greater dry weight fraction. Fall, compared to spring, tested seedlings had lower resistance to plant water movement and greater cuticular transpiration. In general, fall tested seedlings had more root growth than spring tested seedlings. Spring, compared to fall, tested seedlings generally had greater stress resistance. 相似文献
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Successive petroleum ether, chloroform and methanol extracts of Mappia foetida leaves and stem were tested for their antibacterial activity. The methanol fractions were found to be most effective against all the tested organisms. 相似文献
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在对云南 7种豆科灌木树种分布和适生环境生态习性了解的基础上 ,测定了这 7个树种叶片的常规营养成分、微量元素、氨基酸等的含量 ,并进行了动物饲喂试验。结果表明 :7种豆科灌木树种叶片营养成分含量均高于谷物类饲料 ,其叶片粗蛋白含量高于 13% ,且微量元素、氨基酸含量丰富 ,钙磷比适宜 ,具有较高的营养价值。7种豆科灌木的叶粉按 5 %比例用于 0~ 30日龄肉用仔鸡日粮中对雏鸡的健康无不良影响 ,可直接用于鸡的日粮当中。其中 ,多花 艹抗 子梢、波叶山蚂蝗、毛叶猪屎豆、毛叶秧青和白花羊蹄甲叶粉的蛋白质利用率较高 ,表明其蛋白质品质较佳 ,具有较好的饲用价值。 相似文献
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Successive petroleum ether, dichloromethane and methanol extracts of Newtonia hildebrandtii stem bark were tested in vitro for their antifungal and antibacterial activity. The methanol extract was found to be the most effective against the tested pathogens. 相似文献
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Kariba RM 《Fitoterapia》2001,72(2):177-178
Successive petroleum ether, dichloromethane and methanol extracts of Ajuga remota aerial parts were tested in vitro for their antifungal activity. The petroleum ether fraction was found to be the most effective against the tested pathogens. 相似文献
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头塘小流域不同立地类型防护林树种对比试验 总被引:2,自引:0,他引:2
根据金沙江流域防护林建设的需要,在会泽县头塘小流域的4种不同立地类型内,进行了7个树种的生长和防护功能对比试验研究。通过4年对各树种树高、地径、冠幅等生长量因子的观测,7个树种在4种立地类型上均表现良好的适应性。立地类型与树种间的交互作用明显,多数树种在半阳坡中厚层黄红壤立地类型上生长良好。通过各树种在该立地类型上生长曲线的比较,评选出圣诞树、水冬瓜在3个生长因子上的生长速度最快。经对7个参试树种防护功能的测定分析,以圣诞树的水土保持功能最佳。 相似文献
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Leaves and stems of Salacia beddomei were extracted successively with petroleum ether, ethyl acetate and chloroform and tested for their antibacterial activity. Ethyl acetate extracts were found to be most effective against all the tested organisms. 相似文献
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Kariba RM 《Fitoterapia》2002,73(6):523-525
Methanol extract of the stem bark of Hymenodictyon parvifolium was tested for its antifungal and antibacterial activity. The extract was found to have inhibitory effect against all the pathogens tested. 相似文献
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Successive petroleum ether, benzene, chloroform, ethyl acetate and methanol extracts of Chukrasia tabularis leaves were tested for their phytochemical constituents, antibacterial and antifungal activity. The ethyl acetate and methanol extracts were found to be most effective against most of the tested organisms. 相似文献
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Chloroform, ethanol and ethyl acetate extracts of Cynara scolymus L. leaves, heads and stems were tested for their antifungal activity using the agar-well diffusion assay technique. The leaves extracts and the ethanol fractions were found to be the most effective extract against all the tested organisms. 相似文献
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Aqueous, methanolic and chloroformic extracts of Pulicaria dysenterica aerial parts were tested for their antibacterial activity using the disc-diffusion assay technique. The methanolic extract was found to be the most effective extract against three out of six tested bacteria. All of the extracts were active against Vibrio cholera. 相似文献
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绿化树种接种VA菌根真菌的生长效应研究 总被引:1,自引:0,他引:1
试验结果表明,VA菌根真菌对10个参试的绿化树种均有不同程度的增效。对苗高和基径均有增效的占参试树种的80%,其中对苗高有增效的占80%,对基径有增效的占100%。但接种效应差异性程度各有不同,处理与对照苗高、基径生长均达到极显著差异的树种有黑金刚、花金刚、巴西榕,差异显著的有竹节树,其余树种接种后虽有增效作用,但没有达到显著水平。综合来看,VA菌根真菌对黑金刚、花金刚、红关公、巴西榕和竹节树的增效效应最为明显,对扭纹铁、红桂木的增效效应较好,而对石楠、红楣和伞花木则稍差。 相似文献