固沙植物白沙蒿化学成份的研究[Ⅰ]

从固沙植物白沙蒿中分到五个成份,经鉴定:1.亚(麻)油酸乙酯Ethyl linoleate。2.樱草素Sakuranetin,3.异樱草素Isosakuranetin,4.木波罗双氢黄酮Arto-carpanone,5、金合欢素Acacetin。亚(麻)油酸乙酯是冠心病类药物的主要成份,所以白沙蒿的发现为此类药物提供了新药源。     

六种沙蒿花粉形态的比较研究

通过光学显微镜和扫描电镜．观察了蒿属6种沙生半灌木的花粉形态．结果表明，6种沙蒿的花粉形态高度一致,极面观均为三裂圆形，赤道面观为圆形或椭圆形，具三孔沟，外壁纹饰在光镜下为表面颗粒状，在电镜下为排列较疏的刺，刺基外延．     

艾蒿提取物对烟草病原菌的抑制作用

采用菌丝生长速率法、孢子萌发法和滤纸片法,对艾蒿的乙醇提取物及其萃取物做生物活性测试．结果表明：在50mg·mL。的浓度下,艾蒿乙醇提取物对烟草疫霉菌、链格孢菌的菌丝生长抑制率分别为100．00％（96h）、18．51％（168h）,对烟草链格孢菌孢子萌发抑制率为76．26％（6h）;艾蒿乙醇提取物的石油醚萃取物、乙酸乙酯萃取物对烟草疫霉菌菌丝生长抑制率分别为79．49％（120h）、87．42％（72h）．在100mg·mL。的浓度下,艾蒿乙醇提取物对烟草链格孢菌的菌丝生长抑制率、孢子萌发抑制率分别为58．84％（48h）、100％（6h）;艾蒿乙醇提取物的石油醚萃取物、氯仿萃取物、乙酸乙酯萃取物对烟草链格孢菌的菌丝生长抑制率分别为26．11％（96h）、57．17％（72h）、32．87％（48h）;艾蒿乙醇提取物的氯仿萃取物对烟草链格孢菌孢子萌发抑制率为80．05％（6h）．在50、100、200mg·mL-1的浓度下,艾蒿乙醇提取物对烟草青枯菌均无抑制作用．     

超声波辅助提取魁蒿总黄酮响应面法优化工艺

以魁蒿为原料,采用超声波法辅助提取总黄酮,考察料液比、提取时间、提取温度、乙醇体积分数和超声功率等因素对魁蒿总黄酮提取率的影响.在单因素实验的基础上,选取影响较大4个因素作为考察因素,以总黄酮提取率为响应值,应用响应面法优化魁蒿总黄酮的提取工艺.结果表明,在乙醇体积分数为70%、料液比为1∶20、提取时间为50 min、提取温度为65 ℃和超声功率200 W的最佳工艺条件下,魁蒿总黄酮的提取率为2.493%.     

Effects of soil stoichiometry of the CaCO<Subscript>3</Subscript>/available phosphorus ratio on plant density in <Emphasis Type="Italic">Artemisia ordosica</Emphasis> communities

In soil, CaCO3 can reduce the availability of phosphorus in arid and semi-arid regions, thereby influencing plant growth. However, the effects of soil stoichiometry of the CaCO3/available phosphorus ratio (CaCO3/AP ratio) on plant density are unknown. In this study, we examined 4 Artemisia ordosica communities located in arid and semi-arid regions, and performed a pot experiment with an orthogonal design to examine the relationships between the soil CaCO3/AP ratio and plant density. The results showed that the soil stoichiometry of the CaCO3/AP ratio had a greater effect on growth of A. ordosica than either CaCO3 or AP as single factor. The influence of the soil CaCO3/AP ratio on density of A. ordosica was related to the climatic zone and the types and/or amplitudes of increases in the soil CaCO3/AP ratio. When the soil CaCO3/AP ratio was within the same amplitude and was less than 2.5, the A. ordosica density increased in the semi-arid region, whereas the density decreased with increasing soil CaCO3/AP ratios in the arid region. In the semi-arid region, when the soil CaCO3/AP ratio was within the same amplitude and the increase in the soil CaCO3 content was greater than the increase in soil AP, the A. ordosica density increased with increasing soil CaCO3/AP ratios. This means that the relationship between the soil CaCO3/AP ratio and the A. ordosica density remained the same. In the arid region, an increase in the soil CaCO3/AP ratio as a result of increased soil CaCO3 content and decreased soil AP resulted in increased density of A. ordosica. Therefore, the relationship between soil CaCO3/AP ratios and density of A. ordosica was altered by these changes in soil chemistry. Thus, the soil stoichiometry of the CaCO3/AP ratio is an important factor affecting the density of A. ordosica in arid and semi-arid regions.     

魁蒿化学成分及药理活性研究进展

根据近年来国内外最新研究文献,对魁蒿化学成分及药理作用研究进展进行了综述,并展望了未来的研究方向,为合理开发利用魁蒿植物资源提供参考.已有的研究表明,魁蒿化学成分以挥发性化合物数目最多,其次为黄酮类化合物和糖类化合物,具有抗炎、抗癌、抗皮肤瘙痒、抗过敏、抗氧化、降血脂、保胃、抗溃疡等作用,具有广阔的药用前景.     

黄花蒿叶片植株再生体系的建立

以黄花蒿叶片为材料,设计离体培养不同阶段的培养基配方.通过对培养结果进行观察、统计分析,结果表明:MS 2,4-D(2.0mg/L)对叶片诱导愈伤组织效果最好;MS 6-BA(1.0mg/L)为丛生芽分化培养基的适宜配方;无菌苗在MS NAA(0.05mg/L)的培养基上生根效果良好.     

中国东北蒿属叶表皮特征研究Ⅰ──龙蒿组的研究

用光镜和扫描电镜对东北蒿属（Ａｒｔｅｍｉｓｉａ）龙蒿组（Ｓｃｔ．ＤｒａｃｕｎｃｕｌｕｓＢｅｓｓ．）五种、四变种，一变型１０个分类单位的叶表皮特征进行了研究，发现基本细胞类型、气孔类型。气孔排列方式，保卫细胞蜡质纹饰、气孔拱盖表面及内缘等特征对该组植物的鉴别很有意义。表皮毛的差异较小。并根据其特征制定出检索表．     

蒙药嘎日迪散对大鼠溃疡性结肠炎的作用

目的:探讨嘎日迪散对大鼠溃疡性结肠炎的作用.方法:采用免疫法复合TNBS诱导法制作溃疡性结肠炎模型,从宏观和微观评价嘎日迪散对大鼠溃疡性结肠炎的治疗效果.结果:动物疾病活动指数、结肠粘膜损伤指数、结肠粘膜镜下评分的结果显示,各给药组和模型组相比具有统计学意义,HE结果显示,模型组还存在典型的溃疡,各给药组粘膜修复良好.结论:嘎日迪散能有效治疗大鼠溃疡性结肠炎,其作用和阳性药柳氮磺吡啶及补脾益肠丸相当.