Study on Seedling Techniques of Artocarpus nanchuanensis

[Objective] This study aimed to solve the problems of low seed germina- tion rate and difficult bareroot seedling transplanting in artificial cultivation of Arto- carpus nanchuanensis, a native species in China. [Method] Under different seed treatment and seedling style, the seed germination rate and seedling emergence rate of A. nanchuanensis were investigated. [Result] tn both sand bed and direct sowing yellow soil, the seed germination rate, seedling survival rate and seedling emergence rate in the treatment II were all higher than those in the treatments I and III. The average seed germination rate, seedling survival rate and seedling emergence rate in sand beds were 1.5%, 16.27% and 13.95%, respectively higher than those in direct sowing yellow soil. The average seedling emergence rate in sand beds was 2.46% higher than that in containers. Among the 8 kinds of light matrix formulas, the growth of seedlings in the formula VIII was best. In the three treatment groups, the seedling emergence rates, seedling heights and ground diame- ters in the formula VIII were all significantly different from those in the other formu- las. The seedling growth in the formula I and III ranked second, while the seedling emergence rate, seedling height and ground diameter in the formula VII were the poorest. [Conclusion] If conditions allow, the formulas I （meadow soil：vermiculite：yel- low soi1=5：3：2）, III （meadow soil：perlite：yellow soi1=5：3：2） and VIII （peat：forest top soi1=6：4） should be promoted in seedling with light matrixes.

南川升麻的化学成分和抗菌活性研究

[目的]研究南川升麻化学成分的抗菌活性。[方法]采用回流提取法提取升麻根茎中的化合物,然后依次用石油醚、乙酸乙酯和正丁醇萃取,乙酸乙酯部位经硅粗胶拌样后进行硅胶层析,然后用氯仿-无水甲醇(10∶0→0∶10,V/V)梯度洗脱,通过薄层层析检测合并相同的部分,并取3、4和5化合物进行抑菌试验。[结果]从南川升麻的干燥根茎中分离得到6个化合物,其中3个为环菠萝蜜烷型三萜,通过光谱和质谱分析将他们的结构分别鉴定为异阿魏酸(1)、阿魏酸(2)、25-O-乙酰升麻醇(3)、兴安升麻苷C(4)、12β-羟基升麻醇(5)和β-谷甾醇(6)。[结论]首次从该植物中分离得到1～6化合物,其中3、4和5化合物都有较好的抗菌活性。