坡向对太子参地下部生长、光合生理、药用成分的影响

研究目的：探究不同坡向对太子参地下部生长、光合生理、药用成分的影响。方法：4个不同坡向种植太子参,定期采样,测量其地下部性状;生长旺期监测其光合生理因子;倒苗后,商品分级,测其块根药用成分含量;最后进行方差分析。结果：ES环境有利于太子参地下部贮藏养料、吸收水分和膨大;有利于太子参药用成分的形成;是太子参光合生理的有利环境。结论：不同坡向太子参地下部生长、光合生理、药用成分具有差异。相比于其他3个坡向环境,ES环境有利于太子参地下部生长、进行光合作用和药用成分形成。     

嫁接在烟草远缘杂交中的应用

为了扩大种质资源的范围,利用烟草和异种属的物种资源进行远缘杂交已成为烟草育种的发展趋势,而对于克服烟草远缘杂交不育或育性较低的问题。实验利用了常规育种的方法进行先嫁接再有性杂交,并对后代进行酯酶同工酶的分析。结果表明,此方法在一定程度上不但提高了远缘杂交的结实率,而且在后代中含有父本的遗传物质,从而为烟草品种的改良,新品种的培育开辟了新的途径。     

广西菊科药用植物区系研究

为揭示广西菊科药用植物区系的特点,对该区系的基本组成和地理成分进行了分析。     

Anthelmintic activity of Cocos nucifera L. against sheep gastrointestinal nematodes

The development of anthelmintic resistance has made the search for alternatives to control gastrointestinal nematodes of small ruminants imperative. Among these alternatives are several medicinal plants traditionally used as anthelmintics. This work evaluated the efficacy of Cocos nucifera fruit on sheep gastrointestinal parasites. The ethyl acetate extract obtained from the liquid of green coconut husk fiber (LGCHF) was submitted to in vitro and in vivo tests. The in vitro assay was based on egg hatching (EHT) and larval development tests (LDT) with Haemonchus contortus. The concentrations tested in the EHT were 0.31, 0.62, 1.25, 2.5 and 5 mg ml⁻¹, while in the LDT they were 5, 10, 20, 40 and 80 mg ml⁻¹. The in vivo assay was a controlled test. In this experiment, 18 sheep infected with gastrointestinal nematodes were divided into three groups (n = 6), with the following doses administered: G1—400 mg kg⁻¹ LGCHF ethyl acetate extract, G2—0.2 mg kg⁻¹ moxidectin (Cydectin^®) and G3—3% DMSO. The worm burden was analyzed. The results of the in vitro and in vivo tests were submitted to ANOVA and analyzed by the Tukey and Kruskal–Wallis tests, respectively. The extract efficacy in the EHT and LDT, at the highest concentrations tested, was 100% on egg hatching and 99.77% on larval development. The parameters evaluated in the controlled test were not statistically different, showing that despite the significant results of the in vitro tests, the LGCHF ethyl acetate extract showed no activity against sheep gastrointestinal nematodes.     

药用植物在乡村产业振兴中应用

药用植物是中医药产业发展的基础，对于建立健全国家卫生体系具有重要意义；作为重要的战略资源和经济作物，药用植物在乡村产业振兴发挥了巨大作用。本文分析了当前药用植物在乡村产业振兴中的优势特点、应用情况和存在问题，并提出五点药用植物产业发展建议。为乡村产业振兴提供参考。