Dynamic analysis of major active ingredients of Cortex Moutan cultivated in Dianjiang county of Chongqing / 中国中药杂志

<p><b>OBJECTIVE</b>To study the change of paeonol and paeoniflorin, the two major active ingredients contained in Cortex Moutan cultivated in Dianjiang county of Chongqing, due to the change of some influence factors, and explore suitable plant conditions and quality cotrol methods of Cortex Moutan.</p><p><b>METHOD</b>Paeonol and paeoniflorin were determined by HPLC in samples from Dianjiang.</p><p><b>RESULT AND CONCLUSION</b>The ratio of paeonol and paeoniflorin in Cortex Moutan was regularly influenced by altitude, the growth years and harvest time. Cortex could be cultivated at altitude of 400 m to 800 m but 600 m is the best aria because of the peak of the percentage composition of paeonol and paeoniflorin at 600 m. The first and middle third of October in the fifth year is the best picking time of Cortex Moutan because of the maximum of the percentage composition of paeonol and paeoniflorin.</p>

Orthogonal experiments on cultivation of Phyllanthus urinaria / 中国中药杂志

<p><b>OBJECTIVE</b>To study the growth rules, the output and the influence factors of cultivated Phyllanthus urinaria, and provide basis for standardized cultivation.</p><p><b>METHOD</b>Orthogonally designed field experiments with three factors and three levels, comparing the characters of cultivated plants and the wild ones of P. urinaria.</p><p><b>RESULT AND CONCLUSION</b>Under the manual planter condition, the characters, such as branching number, single dry weight, single output etc, enhanced enormously, and the increase of single output reaches 3.27 times. The sowing time was the most sensitive factor, which affected the single character and the yield per unit of area, whereas the different levels of sowing thickness and fertilizer also remarkably influenced the output. When the seeds were sowed at the mid-April earlier period, drilling with the 20 cm row spacing, they started to emerge about 1 week later, the growth flush period was from June to August, the growth slowed down in September, and the output per hectare could reach to 5.750 kilograms at harvest in late October.</p>

A comparison of tissue formation and the content of polysaccharide between wild and cultured Dendrobium candidum / 中国中药杂志

<p><b>OBJECTIVE</b>To compare the tissue formation and the content of polysaccharide between the wild Dendrobium candidum and the cultured ones and to find any existed differences.</p><p><b>METHOD</b>Bare-handed microtomy and photomicrography; The content of polysaccharide is determined by phenol-sulphuric acid method.</p><p><b>RESULT AND CONCLUSION</b>There are no marked noticeable differences between the wild D. candidum and the cultured ones in terms of the tissure formation and the content of polysaccharide.</p>