From the experiment of extraction of leaves of Coriaria sinica Maxim leaves and the effective inhibitory against 19 kinds of the fungus and bacteria,the result showed the alcoholoes compounds was more efficious than a...From the experiment of extraction of leaves of Coriaria sinica Maxim leaves and the effective inhibitory against 19 kinds of the fungus and bacteria,the result showed the alcoholoes compounds was more efficious than aliphatic compounds to every microoganism.For Ralstonia solanacearum as an example,Studying on the way of the suppression medicament working,it was found that the compoundscan controled Ralstonia solanacearum during its logarithmic phaseand stable trophophase.Through the photos of electron microscope,it was found that the compound can make the bacteria’chromatin pycnosis and appeard many(vacuoles,)destruct the formation of the cell wall then break the bacteria.展开更多
采用叶蝶法、夹毒法和点滴法,测定了瑞香狼毒(Stellera chamaejasme L.)提取物对菜粉蝶(Pieris rapae L.)的生物活性.结果表明,这些提取物对菜粉蝶5龄幼虫具有很强的拒食、胃毒、生长抑制作用,但是其触杀作用较差.根乙醇粗提物(简称SCEE...采用叶蝶法、夹毒法和点滴法,测定了瑞香狼毒(Stellera chamaejasme L.)提取物对菜粉蝶(Pieris rapae L.)的生物活性.结果表明,这些提取物对菜粉蝶5龄幼虫具有很强的拒食、胃毒、生长抑制作用,但是其触杀作用较差.根乙醇粗提物(简称SCEE)对菜粉蝶5龄幼虫24 h 的AFC50(拒食中浓度)为381.28 μg/mL;胃毒作用的LD50(致死中量)为22.42 μg/头;其浓度为500 μg/mL时,处理2 d 后幼虫的体重为49.38 mg,7 d 后的校正死亡率为100%.氯仿萃取物浓度为300 μg/mL时,处理24 h 后,对菜粉蝶5龄幼虫的拒食率分别为93.58%,7 d 后幼虫的死亡率为82.76%.当瑞香亭、伞形花内酯与狼毒色原酮的浓度为500 μg/mL时,处理24 h后,它们对菜粉蝶5龄幼虫的拒食率分别为80.45%、83.79%和70.03%,7 d 后幼虫的死亡率分别为75.87%、79.31%和65.52%.SCEE对菜粉蝶5龄幼虫触杀作用LD50的值为52.48 μg/头.展开更多
文摘From the experiment of extraction of leaves of Coriaria sinica Maxim leaves and the effective inhibitory against 19 kinds of the fungus and bacteria,the result showed the alcoholoes compounds was more efficious than aliphatic compounds to every microoganism.For Ralstonia solanacearum as an example,Studying on the way of the suppression medicament working,it was found that the compoundscan controled Ralstonia solanacearum during its logarithmic phaseand stable trophophase.Through the photos of electron microscope,it was found that the compound can make the bacteria’chromatin pycnosis and appeard many(vacuoles,)destruct the formation of the cell wall then break the bacteria.
文摘采用叶蝶法、夹毒法和点滴法,测定了瑞香狼毒(Stellera chamaejasme L.)提取物对菜粉蝶(Pieris rapae L.)的生物活性.结果表明,这些提取物对菜粉蝶5龄幼虫具有很强的拒食、胃毒、生长抑制作用,但是其触杀作用较差.根乙醇粗提物(简称SCEE)对菜粉蝶5龄幼虫24 h 的AFC50(拒食中浓度)为381.28 μg/mL;胃毒作用的LD50(致死中量)为22.42 μg/头;其浓度为500 μg/mL时,处理2 d 后幼虫的体重为49.38 mg,7 d 后的校正死亡率为100%.氯仿萃取物浓度为300 μg/mL时,处理24 h 后,对菜粉蝶5龄幼虫的拒食率分别为93.58%,7 d 后幼虫的死亡率为82.76%.当瑞香亭、伞形花内酯与狼毒色原酮的浓度为500 μg/mL时,处理24 h后,它们对菜粉蝶5龄幼虫的拒食率分别为80.45%、83.79%和70.03%,7 d 后幼虫的死亡率分别为75.87%、79.31%和65.52%.SCEE对菜粉蝶5龄幼虫触杀作用LD50的值为52.48 μg/头.