《大麦科学》已经连续4年被江苏省新闻出版局、江苏省科技厅评为“江苏省期刊质量一级”，为了适应期刊事业的发展需要，更好地发挥技术性期刊的作用，活跃学术气氛，宣传报道农业科学研究的新动态、新技术、新成果，使刊物更具有特色...《大麦科学》已经连续4年被江苏省新闻出版局、江苏省科技厅评为“江苏省期刊质量一级”，为了适应期刊事业的发展需要，更好地发挥技术性期刊的作用，活跃学术气氛，宣传报道农业科学研究的新动态、新技术、新成果，使刊物更具有特色、内容更丰富、读者更广泛，让这宝贵资源更好地服务于国民经济建设，根据有关专家和读者建议，经国家新闻出版总署正式批准，将《大麦科学》（季刊）更名为《大麦与谷类科》（Barley and Cereal Science）（季刊）。展开更多
[ Objective ] The insecticidal and antibacterial bioactivity of Wikstroemia chamaedaphne Meissn were screened and bioactive substances in it were separated and purified. [ Method] The Wikstroemia chamaedaphne Meissn w...[ Objective ] The insecticidal and antibacterial bioactivity of Wikstroemia chamaedaphne Meissn were screened and bioactive substances in it were separated and purified. [ Method] The Wikstroemia chamaedaphne Meissn was conducted ultrasonic extraction in petroleum ether, ethyl acetate and methanol. The insecticidal activity of Wikstroemia chamaedaphne Meissn to Mythimna separata walker and aphid were determined. The antibacterial activity of Wikstroemia chamaedaphne Meissn to Fusarium graminearu, Glomerella cingulata, F. oxysporium f. sp niveum, Alternaria solani and Fusarium oxysporium were also determined. The bioactivity-guided methods such as opencolumn chromatography and Pre-HPLC method were used to separate active components in petroleum ether extract from Wikstroemia chamaedaphne Meissn. [ Result] When the concentration was 500 mg/L, 3 kinds of extracts from Wikstroemia chamaedaphne Meissn didn＇ t show obvious antibacterial bioactivity to 5 kinds of test samples. When the concentration was 5%, petroleum ether extract show certain topical toxicity to aphids. The ethyl acetate extract showed certain antifeedant activity to 3^rd instar Larvae of Mythimna separata Walker. The fraction F4 of petroleum ether extract possessed highest topical toxicity to aphids and the lethality was 60.00%. [ Conclusion] Wikstroemia chamaedaphne Meissn contained many insecticidal constituents whose active parts and mechanism were needed further researches.展开更多
文摘《大麦科学》已经连续4年被江苏省新闻出版局、江苏省科技厅评为“江苏省期刊质量一级”，为了适应期刊事业的发展需要，更好地发挥技术性期刊的作用，活跃学术气氛，宣传报道农业科学研究的新动态、新技术、新成果，使刊物更具有特色、内容更丰富、读者更广泛，让这宝贵资源更好地服务于国民经济建设，根据有关专家和读者建议，经国家新闻出版总署正式批准，将《大麦科学》（季刊）更名为《大麦与谷类科》（Barley and Cereal Science）（季刊）。
基金Supported by School Project of Yan’an University (YD2005-042)~~
文摘[ Objective ] The insecticidal and antibacterial bioactivity of Wikstroemia chamaedaphne Meissn were screened and bioactive substances in it were separated and purified. [ Method] The Wikstroemia chamaedaphne Meissn was conducted ultrasonic extraction in petroleum ether, ethyl acetate and methanol. The insecticidal activity of Wikstroemia chamaedaphne Meissn to Mythimna separata walker and aphid were determined. The antibacterial activity of Wikstroemia chamaedaphne Meissn to Fusarium graminearu, Glomerella cingulata, F. oxysporium f. sp niveum, Alternaria solani and Fusarium oxysporium were also determined. The bioactivity-guided methods such as opencolumn chromatography and Pre-HPLC method were used to separate active components in petroleum ether extract from Wikstroemia chamaedaphne Meissn. [ Result] When the concentration was 500 mg/L, 3 kinds of extracts from Wikstroemia chamaedaphne Meissn didn＇ t show obvious antibacterial bioactivity to 5 kinds of test samples. When the concentration was 5%, petroleum ether extract show certain topical toxicity to aphids. The ethyl acetate extract showed certain antifeedant activity to 3^rd instar Larvae of Mythimna separata Walker. The fraction F4 of petroleum ether extract possessed highest topical toxicity to aphids and the lethality was 60.00%. [ Conclusion] Wikstroemia chamaedaphne Meissn contained many insecticidal constituents whose active parts and mechanism were needed further researches.
